What is the construction and purpose of cylinder heads?

Cylinder heads are components mounted in the upper part of the engine, above the cylinder block. They consist of a body with intake, exhaust, oil, and cooling channels, as well as valve seats and guides. Their task is to seal the combustion chambers and create a workspace for valves and timing parts.

What are cylinder heads used for?

Cylinder heads are used to control gas exchange and maintain the tightness of combustion chambers. They enable proper air intake, exhaust discharge, and cooperation with valves and camshafts. Without a correctly selected head, the engine may lose compression, overheat, or run unevenly.

What role does the head gasket play?

The head gasket is an element mounted between the block and the head, whose task is to seal the combustion chambers and separate oil and cooling channels. It affects the maintenance of compression and the proper circulation of operating fluids. Its compatibility must be checked together with the engine type, channel layout, and contact surface.

How to choose a cylinder head for a specific car version?

It is best to compare the OEM part number, engine code, fuel type, and equipment completeness. It is also worth checking interchangeable numbers, channel layout, mounting points, and compatibility with the manifold, injectors, or camshafts.

What symptoms may indicate a problem with the cylinder head?

Typical symptoms include a drop in compression, coolant loss, engine overheating, and oil mixing with coolant. Difficulties with starting, uneven operation, and leaks around the head gasket area are also significant.

What data in the offer should be checked before ordering a cylinder head?

Information about the brand, condition, OEM part number, interchangeable numbers, and fuel type is useful. Additionally, it is worth verifying whether the offered element is complete, what mounting points it has, and which engine version and equipment it is compatible with.

Engine heads

At Global Parts, we offer a wide selection of original used car parts, including cylinder heads for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each cylinder head we offer undergoes quality control to ensure you receive a top-quality product.

More information

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BMW E60 E61 E63 E65 E87 E90 E91 Metal Bracket Cylinder Head N52

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 8610473

Engine Acoustic Cover BMW F20 F21 F22 F30 F31 F32 Petrol N20 Trim Panel 8610473

£18.95

Free delivery: Jul 07

If paid before 14:00

Part no. 8511484

BMW F30 F32 N57N N57Z Diesel Engine Acoustic Cover Trim Insulation Panel 8511484

£47.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7530743-1

BMW 1 3 Série E46 E81 E87 116i 316i N45 Moteur Bobine D'Allumage Bougie Housse

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7530743

BMW E46 E81 E87 116i 316i N45 Engine Ignition Coil Spark Plug Cover 7530743

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7530743-3

Engine Cover BMW E46 E81 E87 116i 316i N45 Ignition Coil Spark Plug Trim 7530743

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7511180

BMW 5 7 Series E60 E61 E65 N62 Engine Ignition Coil Spark Cover 1-4 Cylinder

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 8645876

BMW F30 LCI 330e B48X Engine Cover Acoustic Slam Insulation Trim Panel 8645876

£142.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7777364

BMW E90 320si N45 Ignition Coil Engine Cover Carbon Petrol 7777364

£75.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7530743-2

BMW 1 3 Series 2 E46 E81 E87 116i 316i N45 Engine Ignition Coil Cover 7530743

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7800001

BMW E90 E91 LCI E92 F10 F11 N57 Cylinder Head Cover Engine Covering 7812929

£313.95

Free delivery: Jul 8 – 15

If paid before 14:00

Part no. 7523714-1

BMW 1 3 X3 Series E83 E87 E90 E91 1 N46 Petrol Engine Acoustic Cover 7523714

£18.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7777364-1

BMW E90 320si N45 Ignition Coil Engine Cylinder Head Cover Panel Carbon 7777364

£75.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7566614

BMW E60 E61 LCI N43 Petrol Engine Ignition Coil Insulation Cover Panel 7566614

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7527742

BMW E60 E81 E87 E90 E91 E92 F10 F11 Engine Covering Plate 7527742

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7638639

BMW F10 M5 F13 M6 S63N Engine Cylinder Head Rocker Cover Panel Cyl 1-4 7843506

£189.95

Free delivery: Jul 8 – 15

If paid before 14:00

Part no. 8514202

Engine Acoustic Cover BMW F10 F20 F21 F22 F30 F32 Diesel B47 Trim Panel 8514202

£23.95

Free delivery: Jul 07

If paid before 14:00

Part no. 8490577

BMW F20 F30 F31 LCI Engine Acoustic Cover Trim Panel Diesel 8490577

£28.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7838053

Cylinder Head Cover BMW E90 E92 E93 M3 S65 Cylinder 5-8 7838053

£18.95

Free delivery: Jul 07

If paid before 14:00

Part no. 8507561

BMW F07 GT F10 F11 F30 F31 F32 F36 GT Cylinder Head N57D30B Diesel 7812929

£313.95

Free delivery: Jul 07

If paid before 14:00

Part no. 9242094

BMW X3 F25 Glove Box Damper Absorber Spring Glovebox 9242094

£18.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7812604

BMW F20 F21 114d 116d ed Diesel N47N Engine Cylinder Head 7812603

£189.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7838137

BMW E90 E92 E93 M3 S65 Cylinder Head Cyl 1-4 7838137 FOR REGENERATION !!!

£417.95

Free delivery: Jul 8 – 15

If paid before 14:00

Part no. 7838147

BMW E90 E92 E93 M3 S65 Cylinder Head Cyl 5-8 7838147 FOR REGENERATION !!!

£427.95

Free delivery: Jul 8 – 15

If paid before 14:00

Part no. 7575671-1

BMW E87 E91 E81 E90 116i 316i N43B16A Cylinder Head Planned 7575671

£569.95

Free delivery: Jul 8 – 15

If paid before 14:00

Part no. 7833877

BMW 5 6 Series E60 M5 E63 M6 Petrol S85 Engine Cylinder Head Right 1-5 7833877

£284.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7833881

BMW 5 6 Series E60 M5 E63 M6 Petrol S85 Engine Cylinder Head Left 6-10 7833881

£284.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7608406

BMW F10 F11 LCI F12 G11 Cylinder Head Cover Cylinder 5-8 Cover Cap Plate 7608406

£18.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7530743-4

Engine Cover BMW E46 E81 E87 116i 316i N45 Ignition Coil Spark Plug Trim 7530743

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7575671

BMW E87 E91 LCI E81 E90 116i 316i N43B16A Cylinder Head Planned 7559172

£569.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7838147-1

BMW E90 E92 E93 M3 S65 Cylinder Head With Camshaft Cyl 5-8 7838147

£617.95

Free delivery: Jul 8 – 15

If paid before 14:00

Part no. 7636612

BMW F10 F11 LCI F13 N63N Engine Cylinder Head Rocker Cover Panel Cyl 5-8 7603653

£151.95

Free delivery: Jul 07

If paid before 14:00

Part no. 8513677

Cylinder Head BMW F20 F21 LCI 114d 116d Diesel B37 Engine 8513677

£218.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7603346

BMW 1 3 Series F20 F21 F30 N13 Petrol Compressor Supporting Bracket 7603346

£13.95

Free delivery: Jul 07

If paid before 14:00

Part no. 7624429

BMW E90 LCI F10 F20 F30 Engine Cylinder Head Rocker N55 135i 335i 535i 7605102

£759.95

Free delivery: Jul 07

If paid before 14:00

Part no. 8513709

BMW F20 LCI F30 Cylinder Head Housing Rocker Panel Diesel Engine B47 8513709

£142.95

Free delivery: Jul 8 – 15

If paid before 14:00

Part no. 7797488

BMW E60 E87 LCI E90 N47 Diesel Engine Timing Case Cover 7797488

Product currently unavailable

Part no. 7628021

BMW 1 3 Series F20 F21 F30 MINI R55 R56 LCI Cylinder Head Drive Unit 7628021

Product currently unavailable

Part no. 7531324

Engine Top Cover BMW E60 E63 E65 E87 E90 Petrol N52 Trim Panel 7531324

Product currently unavailable

Part no. 8602967

Engine Cover BMW F20 F30 F31 LCI B38 Petrol Motor Acoustic Insulation 8602967

Product currently unavailable

Part no. 7810196

BMW E81 E87 LCI E90 E91 Cylinder Head Housing Engine N47 Diesel 7810196

Product currently unavailable

Part no. 7796408

Vent Pipe BMW E60 LCI E90 335d X6 E71 35dX M57N2 Cylinder Head 7796408

Product currently unavailable

Part no. 7812927-1

BMW F07 GT F10 F11 F30 F31 F32 F36 Cylinder Head N57N Diesel 7812927

Product currently unavailable

Part no. 7566806

BMW E60 LCI E90 E91 F10 F11 Petrol N53 Engine Cylinder Head 7560164

Product currently unavailable

Part no. 7797511-1

Cylinder Head Housing BMW E60 E87 E90 F10 F20 F30 Diesel Engine N47 N47N 7797511

Product currently unavailable

Part no. 8621822

Engine Cover BMW F20 F21 F22 F30 F32 LCI Petrol B48 Acoustic Trim Panel 8621822

Product currently unavailable

Part no. 7511181

BMW 5 7 Series E60 E61 E65 N62 Engine Ignition Coil Spark Cover 5-8 Cylinder

Product currently unavailable

Part no. 7797410-4

BMW E81 E87 E90 LCI 118d 120d 318d 320d 520d Diesel N47 Engine Acoustic Cover

Product currently unavailable

Part no. 7800044-1

BMW E70 E90 LCI F10 F20 F30 N57 Engine Camshafts Cylinder Head Housing 7800044

Product currently unavailable

Part no. 7563474-1

Cylinder Head BMW X5 E53 E60 E63 E65 N62 Engine Cyl 1-4 Rocker Cover 7522151

Product currently unavailable

Part no. 7797613

BMW E81 E87 LCI E90 Engine N47 Head Rocker Cylinder Cover 7797613

Product currently unavailable

Part no. 7797511

Cylinder Head Housing BMW E90 E60 E87 F10 F20 F30 Diesel Engine N47 N47N 7797511

Product currently unavailable

Part no. 7812063

Engine Cover BMW E70 LCI E71 F25 30dX N57 Acoustic Insulation Trim Panel 7812063

Product currently unavailable

Part no. 8610473-2

Top Cover BMW F20 F21 F22 F30 F31 Petrol N20 Engine Acoustic Trim Panel 8610473

Product currently unavailable

Part no. 7812063-1

Engine Cover BMW E70 LCI E71 F25 30dX N57 Acoustic Insulation Trim Panel 7812063

Product currently unavailable

Part no. 7806060

BMW E90 E91 E92 E93 325d M57N2 Diesel 306D3 Engine Cylinder Head 7792753

Product currently unavailable

Part no. 7794700

BMW X3 E83 2.0d M47N2 Diesel Engine Head Acoustic Cover 7794700

Product currently unavailable

Part no. 7838484-1

BMW 3 Series 1 E90 E92 E93 M3 Engine Ignition Coil Cover Cylinders 1-4 7838487

Product currently unavailable

Part no. 7548196

BMW E60 LCI E90 E91 325i 330i 525i 530i Engine Cylinder Head Cover

Product currently unavailable

Part no. 7838484

BMW E90 E92 E93 M3 Engine Ignition Coil Cover Cylinders 1-4 7838485

Product currently unavailable

Part no. 7838486

BMW 3 Series E90 E91 E92 M3 Engine Ignition Coil Pack Cover Cylinders 5-8

Product currently unavailable

Part no. 7791972

BMW E60 E61 Diesel 535d M57N Engine Acoustic Insulation Cover Trim Panel 7791972

Product currently unavailable

Part no. 8511484-2

BMW F30 F32 Diesel N57N N57Z Engine Acoustic Cover Trim Insulation Panel 8511484

Product currently unavailable

Part no. 7810463

BMW E90 LCI F10 F20 F30 Cylinder Head Housing Diesel Engine N47N 7810465

Product currently unavailable

Part no. 7523714-2

BMW E83 E87 E90 E91 1 N46 Petrol Engine Top Cover Insulation 7523714

Product currently unavailable

Part no. 1703172

BMW 5 7 X5 Series E38 E39 E53 Petrol M62 Engine Cylinder Head Cover Right 1-4

Product currently unavailable

Part no. 7575670

BMW E87 E91 LCI E81 E90 116i 316i N43B16A Cylinder Head 7559168

Product currently unavailable

Part no. 7807245

BMW E60 LCI E90 335d 535d M57N2 Engine Acoustic Cover Trim Insulation 7796091

Product currently unavailable

Part no. 2118965

BMW 1 3 Series F20 F21 F30 F31 LCI Petrol B38 B38A15A Engine Cylinder Head

Product currently unavailable

Part no. 7581140-1

BMW E87 E90 E91 120i 320i Petrol N46 Engine Cylinder Head 7505422 RECONDITIONED

Product currently unavailable

Part no. 8602967-1

Engine Cover BMW F20 F30 F31 LCI B38 Petrol Motor Acoustic Insulation 8602967

Product currently unavailable

Part no. 8513453

Engine Cover BMW F10 F12 535d 640d N57Z Acoustic Insulation Trim Panel 8513453

Product currently unavailable

Part no. 7799221

BMW 3 5 X5 Series E46 E60 E53 Diesel M57N Head Rocker Cylinder Cover 7789395

Product currently unavailable

Part no. 7835517

BMW E60 M5 E63 M6 S85 Petrol Engine Cylinder Head Cover 7835517

Product currently unavailable

Part no. 7604016

BMW F10 F12 F13 Cylinder Head Cover Cylinder Cover Cap Plate S63 7604016

Product currently unavailable

Part no. 7797511-2

BMW E90 E60 E87 F10 F20 F30 N47 N47N Diesel Cylinder Head Camshafts 7797511

Product currently unavailable

Part no. 7568581-1

BMW 1 3 E87 E90 E91 118i 120i 318i 320i N46 Engine Cylinder Head Cover 7526670

Product currently unavailable

Part no. 8575439-2

BMW E90 E91 LCI E92 Engine Camshafts Cylinder Head N57 Diesel 8575439 8575440

Product currently unavailable

Part no. 2118177

BMW M5 F10 M6 F12 F13 Cylinder Head Cyl. 1-4 S63N V8 7603471

Product currently unavailable

Part no. 2118178

BMW M5 F10 M6 F12 F13 Cylinder Head Cyl. 5-8 S63N V8 7603475

Product currently unavailable

Part no. 7591617

Engine Cylinder Head BMW E90 E91 E92 E60 E61 330i 530i N52B30A Petrol 7591617

Product currently unavailable

Part no. 7800044

Cylinder Head Housing BMW E70 E90 LCI F10 F20 F30 N57 Diesel Engine 7800044

Product currently unavailable

Part no. 7806058

BMW 1 3 5 X3 Series E60 E83 E87 E90 E91 Engine M47N2 Head Cylinder 7787211

Product currently unavailable

Part no. 7806059

BMW 3 5 7 X5 Series E46 E53 E60 E65 Engine M57N Head Cylinder 7781204

Product currently unavailable

Part no. 7522159-1

BMW E60 E61 E53 E70 N62N Engine Cylinder Head Cover Valve Cover Cyl 5-8 7522159

Product currently unavailable

Part no. 7514539

BMW 3 5 Z4 E46 E60 E85 320i 520i 2.2i Petrol M54 Engine Cylinder Head 1436812

Product currently unavailable

Part no. 7833877-1

BMW E60 M5 E63 E64 M6 Petrol S85 V10 Engine Cylinder Head Right 1-5 7833877

Product currently unavailable

Part no. 7563474

BMW X5 5 7 Series E53 E60 E63 E65 N62 Engine Cyl 1-4 Head Rocker Cover 7563474

Product currently unavailable

Part no. 7608405

Cylinder Head Cover BMW F10 F11 LCI F12 G11 Cylinder 1-4 Cover Cap Plate 7608405

Product currently unavailable

Part no. 7552281-1

BMW E60 LCI E90 E91 325i 330i 525i 530i N52N Engine Cylinder Head Cover 7552281

Product currently unavailable

Part no. 7605025

BMW F10 F11 LCI F06 F13 X5 F15 N63N Air Inlet Manifold Valve Actuator 7605025

Product currently unavailable

Part no. 7548196-1

BMW E60 LCI E90 Engine Cylinder Head Cover 325i 330i 525i 530i N53 7548196

Product currently unavailable

Part no. 7792939

BMW E60 E61 535d M57N Diesel Engine Cylinder Head Rocker Cover Panel 7792914

Product currently unavailable

Part no. 8511484-1

BMW F30 F32 Diesel N57N N57Z Engine Acoustic Cover Trim Insulation Panel 8511484

Product currently unavailable

Part no. 8631745

BMW F40 G20 G30 Mini F56 Engine Cylinder Head Cover Rocker Panel B46 B48 7567354

Product currently unavailable

Part no. 7568582

BMW E46 E83 E85 316i 318i 2.0i N42 N46 Engine Cylinder Head Cover 7506728

Product currently unavailable

Part no. 7566277

Engine Cover BMW F10 F13 Petrol N63 Cylinder Head Front Plate Cyl. 1-4 7566277

Product currently unavailable

Part no. 7566279

Engine Cover BMW F10 F13 Petrol N63 Cylinder Head Cover Cyl. 5-8 7566279

Product currently unavailable

Part no. 7522159

BMW E60 E61 E53 E70 N62N Engine Cylinder Head Cover Valve Cover Cyl 5-8 7522159

Product currently unavailable

Showing 1-99 of 116 products

Cylinder heads – structure, application, and impact on engine performance

Cylinder head components and their role in the combustion process and exhaust emission control

The cylinder head is one of the most important components in the construction of a powertrain. It is responsible for the proper flow of air, fuel, and exhaust gases, as well as for sealing the combustion chambers, enabling the engine to operate efficiently. Without a functional cylinder head, it is impossible to achieve optimal performance and durability of the engine unit. In the Global Parts automotive store, you will find a wide selection of used car engines, including cylinder heads matched to brands such as BMW, Audi, Mercedes, Volkswagen, Mini, and others.

What functions does a cylinder head perform?

The cylinder head is a complex component that performs many key functions:

Creating the combustion chamber – The cylinder head seals the cylinders from the top, enabling the proper combustion of the air-fuel mixture.
Managing flow – It is responsible for delivering air and fuel to the cylinders and for discharging exhaust gases through the intake and exhaust valves.
Mounting point for the timing system – It contains camshafts, valve rockers, and other components responsible for the precise opening and closing of valves.
Cooling and lubrication – It contains oil and cooling channels that prevent overheating and wear of key components. Precise manufacturing of the cylinder head and its proper maintenance are essential for the reliable operation of the engine unit.

Construction and purpose of cylinder heads

Cylinder heads are the upper parts of the engine mounted above the cylinder block. Their task is to seal the combustion chambers and create space for valves, intake ports, exhaust ports, and coolant circuits. A typical cylinder head works with gaskets and mounting parts, and its compatibility must be confirmed by the OEM number, fuel type, and engine version.

Comparison of head variants and data to check

Variant	Typical characteristics	Cooperating elements	What to check before purchase
Petrol engine head	Layout of channels and combustion chambers adapted to spark ignition	timing parts, intake manifold, spark plugs	OEM number, fuel type, number of valves, compatibility with accessories
Diesel engine head	Adapted to higher compression ratios and different combustion system operation	Injectors, manifold, gasket, fuel lines	Engine code, injector seats, contact surface, cracks
Complete head	May contain valves, camshaft, or other embedded elements depending on the version	chains, timing belts, and mounting kits, valve cover, seals	Equipment scope, mounting points, condition of guides and seats
Incomplete head	Body prepared for further equipment according to the car version	engine blocks, valves, camshafts, mounting bolts	Dimensional compatibility, oil channels, cooling channels, resurfacing

The cylinder head is made of aluminum or cast iron, depending on the model and year of production. In cars such as the BMW E46 320d, 4-cylinder heads with 2 or 4 valves per cylinder are used, integrated with cooling and oil channels. The typical weight of a head ranges from 10 to 25 kg, and the combustion chamber diameter varies in the 80–85 mm range for 2.0 l units. In sports models and M versions, heads with increased airflow and modified valve geometry are often used.

Why is it worth taking care of the cylinder head?

A damaged or malfunctioning cylinder head can lead to serious problems, such as:

Loss of compression – Causes a drop in engine power and efficiency.
Engine overheating – Resulting from leaks in the cooling channels.
Wear of valves and valve seats – Resulting in problems with fuel and exhaust flow.
Oil and coolant leaks – Which can lead to the failure of other components. At Global Parts, we offer used car engines that undergo rigorous quality tests, ensuring their durability and reliability.

The role of channels, seats, and contact surfaces in engine operation

The intake and exhaust ports in the head are responsible for directing the mixture and discharging exhaust gases, so their condition directly affects the engine's smoothness. The head contact surface is the area of contact with the engine block, which must maintain flatness and tightness after installing the gasket. When choosing an element such as a BMW E90 320i valve cover, it is worth checking the compatibility of sealing surfaces, ventilation, and mounting points in the upper part of the engine simultaneously. For example, in a BMW E46 320d cylinder head, the average compression is 18–20 bar, and the intake ports provide an airflow of 120–140 l/s at 6000 rpm. Such parameters are important for power, torque, and fuel economy. Cylinder heads are compatible with specific injection systems, intake manifolds, and head gaskets, which allows for precise part matching.

How to choose the right cylinder head?

When choosing a cylinder head, you should pay attention to several key aspects:

Compatibility with the vehicle model – Every car brand and model has its specific technical requirements. In the Global Parts automotive store, you will find cylinder heads perfectly matching BMW, Audi, Mercedes, Volkswagen, Mini, and others.
Technical condition – Ensure that the cylinder head has no cracks, damage, or signs of corrosion.
Service history – It is important that the cylinder head comes from a vehicle with a known mileage and has been regularly serviced.

Selecting a cylinder head by OEM number and equipment version

The selection of a cylinder head should take into account the OEM part number, interchangeable numbers, fuel type, and the completeness of the element. Compatibility with equipment such as camshafts, manifolds, injectors, or engine sensors and switches is also significant. If you are looking for a subassembly such as a Mini Cooper S R56 valve cover, you should compare the breather system, bolt layout, and engine version, as these features also affect the fit of the upper part of the head.

Checking cooperating components during replacement

Replacing a cylinder head involves not only the body itself but also assessing the parts that work with it. You should check the condition of the block surface, the tightness of the lubrication system, and the compatibility of accessories with seats and channels. In the case of parts such as a Mercedes W203 engine cover, the compatibility of mounts and engine bay layout is mainly important, while for the head itself, the OEM number, fuel type, and engine version remain key.

Example table of heads and basic parameters

Vehicle model	Head type	Number of valves	Material	Approximate weight
BMW E46 320d	4-cylinder, diesel	4 per cylinder	Aluminum	12–14 kg
BMW E46 330i	6-cylinder, petrol	4 per cylinder	Aluminum	18–20 kg
Mercedes C200	4-cylinder, petrol	4 per cylinder	Cast iron	22 kg
Audi A4 2.0 TDI	4-cylinder, diesel	4 per cylinder	Aluminum	13 kg

Why is it worth choosing used cylinder heads?

Used car engines, such as a cylinder head, are an excellent solution that allows for savings while maintaining high quality. By choosing Cylinder heads, you gain:

Lower costs – Used components are significantly cheaper than new ones but offer equally high quality.
Ecology – Recycling car parts supports environmental protection and reduces waste.
Wide offer – In our store, you will find cylinder heads for the most popular car brands. In practice, used heads fit original injection assemblies, manifolds, and turbochargers. Compatibility with the model and year allows for maintaining original flow geometry and compression pressure parameters.

How to take care of the cylinder head?

To ensure the cylinder head works reliably for years, it is worth following a few rules:

Regularly change the coolant to prevent corrosion of the cooling channels.
Check the condition of the cylinder head gaskets to avoid leaks and loss of compression.
Monitor the timing system operation and replace worn elements, such as camshafts or valves. If you need to replace a cylinder head, at Global Parts you will find suitable used auto parts that will restore your vehicle to full efficiency. The head assessment procedure includes:

Checking the flatness of the contact surface with the engine block (tolerance 0.05 mm).
Inspecting valves and seats for wear (valve seat diameter: 34–38 mm in E46).
Verifying cooling and oil channels for patency.
Measuring pressure tightness at 3–5 bar to detect micro-cracks.

FAQ

Question	Answer
What is the construction and purpose of cylinder heads?	Cylinder heads are components mounted in the upper part of the engine, above the cylinder block. They consist of a body with intake, exhaust, oil, and cooling channels, as well as valve seats and guides. Their task is to seal the combustion chambers and create a workspace for valves and timing parts.
What are cylinder heads used for?	Cylinder heads are used to control gas exchange and maintain the tightness of combustion chambers. They enable proper air intake, exhaust discharge, and cooperation with valves and camshafts. Without a correctly selected head, the engine may lose compression, overheat, or run unevenly.
What role does the head gasket play?	The head gasket is an element mounted between the block and the head, whose task is to seal the combustion chambers and separate oil and cooling channels. It affects the maintenance of compression and the proper circulation of operating fluids. Its compatibility must be checked together with the engine type, channel layout, and contact surface.
How to choose a cylinder head for a specific car version?	It is best to compare the OEM part number, engine code, fuel type, and equipment completeness. It is also worth checking interchangeable numbers, channel layout, mounting points, and compatibility with the manifold, injectors, or camshafts.
What symptoms may indicate a problem with the cylinder head?	Typical symptoms include a drop in compression, coolant loss, engine overheating, and oil mixing with coolant. Difficulties with starting, uneven operation, and leaks around the head gasket area are also significant.
What data in the offer should be checked before ordering a cylinder head?	Information about the brand, condition, OEM part number, interchangeable numbers, and fuel type is useful. Additionally, it is worth verifying whether the offered element is complete, what mounting points it has, and which engine version and equipment it is compatible with.

Summary: cylinder heads at the Global Parts automotive store

The cylinder head is a key element that affects the efficiency, durability, and reliability of the engine unit. The Global Parts offer includes used parts matched to many brands, including BMW, Mercedes, Audi, and others. When choosing, it is worth comparing the OEM number, interchangeable numbers, fuel type, element condition, and compatibility with engine accessories. We invite you to contact us – we are here to help you! For more information and interesting facts, we also invite you to our automotive blog.

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