BMW E81 E87 LCI 116i E90 316i 115HP N45N Bare Engine N45B16A 63k m, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

BMW E81 E87 LCI 116i E90 316i 115HP N45N Bare Engine N45B16A is a used, original engine block from the N45 family, designed for 1 Series and 3 Series models. This is an ideal choice for users seeking factory fitment and consistency with the vehicle's original architecture. The bare engine serves as a solid foundation for professional rebuilding or engine replacement in BMW cars equipped with this type of unit.

Specifications and technical data

• SKU: 0429710
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 429710
• Substitutable numbers: 11000429710, 0429710, 11000429714, 0429714, N45B16AC
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Purpose and compatibility

The offered engine block belongs to the Engines category and is dedicated to petrol-powered BMW E81, E87 LCI, and E90 models in 116i and 316i versions with 115 HP from the N45N family. The four-cylinder inline design ensures the refinement characteristic of BMW and predictable performance under load.

The petrol engine is suitable for users who expect linear power delivery and the typical rev characteristics of a gasoline engine. The bare engine allows for the transfer of accessories from the previous unit, which facilitates compliance with the vehicle's existing electrical and mechanical systems.

Construction and technical characteristics

The N45B16A unit is a four-cylinder petrol engine where the block, cylinder head, and basic moving parts form a compact, well-known base for further assembly in workshops. The number of cylinders: 4 provides a balance between operating economy and sufficient dynamics for daily city and suburban driving.

The bare engine includes the essential engine structure, which allows for:

• transferring accessories from the damaged unit while maintaining the original configuration,
• inspection and potential refurbishment of auxiliary components before installation,
• adjusting the scope of work to the user's budget and requirements.

This generation of petrol engines works well with factory BMW control systems, which facilitates integration with the vehicle's electronics after proper adaptation in a workshop.

Condition, mileage, and service application

The product is used, making it an attractive cost-effective alternative to new bare engines or complete engines. The declared mileage is 95,000, which, for a petrol unit of this class, leaves real potential for further operation, provided it is correctly installed and serviced.

The N45B16A bare engine is particularly useful in situations where:

• there has been serious mechanical damage to the existing engine (e.g., seizure, block damage),
• it is more cost-effective to replace the entire engine base rather than perform expensive repairs on structural components,
• the workshop has functional accessories that can be transferred to the new block.

For workshops specializing in the BMW brand, such a block is a practical service solution that allows for reduced repair time while preserving the original character of the powertrain.

Benefits of choosing an original BMW bare engine

Choosing an original BMW N45N family bare engine provides a range of technical benefits:

• preservation of factory geometry and mounting points in the engine bay,
• consistency with the original cooling, lubrication, and control systems,
• easier diagnostics and future maintenance due to the familiar design.

For the user, this means greater operational predictability and the ability to leverage the experience of service centers that are well-acquainted with this unit. BMW engines from this series are widely documented in technical literature and workshop practice, which facilitates both installation and subsequent inspections.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as blocks, cylinder heads, or complete power units, check out the available parts in the BMW Engines category.

Installation recommendations and technical knowledge

Before installing the N45B16A bare engine, it is recommended to perform standard preparatory procedures, such as leak testing, verifying the condition of seals, and properly preparing the contact surfaces for accessories. Professional installation at a specialized BMW service center helps minimize the risk of future leaks and premature wear.

To better understand the specifics of units installed in the BMW E90 series and common issues that may occur in these models, it is worth reading our guide: Troublesome BMW E90 engines: check what can ruin your budget!. This is a practical addition to your knowledge when planning an engine replacement or repair.

Summary

BMW E81 E87 LCI 116i E90 316i 115HP N45N Bare Engine N45B16A is a functional base for professional engine replacement in petrol-powered BMW 1 and 3 Series models. The four-cylinder design, characteristic of this engine generation, ensures a good balance between performance and economy, and the used bare engine allows for optimized repair costs while maintaining the vehicle's original architecture.