Audi A4 B8 2.0 TDI Diesel Complete Engine CJCB 136HP with 99k miles, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

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

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

Audi A4 B8 2.0 TDI Diesel Complete Engine CJCB 136HP with 99k miles, WARRANTY is a complete powertrain from the TDI family, designed for Audi A4 B8 diesel models. The unit with the CJCB code belongs to the popular, proven designs, ensuring good refinement and reasonable fuel consumption, and its configuration has been designed for daily, stable operation. By maintaining the factory specification, this engine provides a solid base for replacing a worn-out unit in your car.

Specifications and technical data

• SKU: 03L100031C-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L100031C
• Substitutable numbers: 03L100031C, 03L 100 031 C, 03L100091CX, 03L 100 091 CX
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Engine code: CJCB
• Mileage: 99 000

Technical characteristics of the CJCB unit

The presented engine belongs to the Engines category and was developed by the Audi brand as a modern diesel unit with direct injection. The four-cylinder configuration promotes a balance between performance and economy, and the use of diesel fuel allows for favorable torque in the low and medium RPM range. The 136 HP version is often chosen by drivers who expect calm, predictable operating characteristics and adequate flexibility in both urban and extra-urban traffic.

The complete CJCB engine has been designed as a cohesive powertrain system, in which all major components work together within a single, factory-defined architecture. This ensures compatibility with the vehicle's factory electronics and accessories, which facilitates the replacement process and subsequent diagnostics. The unit is adapted to work in typical operating conditions of the Audi A4 B8, taking into account highway and city loads.

Purpose and application in the Audi A4 B8

Audi A4 B8 2.0 TDI with the CJCB 136HP engine is a configuration frequently encountered on the secondary market, which makes it easier to select the right unit for replacement. This complete engine was developed to maintain the original operating parameters of the powertrain, so that after installation, it is possible to maintain the factory driving character of the car. The four-cylinder design provides an appropriate compromise between the weight of the powertrain and the generated power, which translates into predictable vehicle behavior.

The CJCB unit works well in daily use, where stability, repeatability of performance, and reasonable fuel consumption are important. The engine has been designed to work with the factory drivetrain and control systems in the Audi A4 B8, which minimizes the risk of integration problems after replacement. As a result, this is a particularly attractive solution for users who want to restore the full efficiency of the car while maintaining the original manufacturer's specification.

Condition, mileage, and benefits of choosing a used engine

The offered engine comes from the secondary market, which allows for a significant reduction in repair costs compared to purchasing a new unit. Information about the mileage allows for a better assessment of the service history and planning of further maintenance after installation. Choosing a used, complete engine is particularly beneficial in situations where the existing unit has suffered a major mechanical failure or a defect that is economically unviable to repair.

By choosing such an engine, you gain the ability to restore the full functionality of the vehicle while maintaining the original design of the powertrain. This is a solution that allows you to combine cost control with maintaining the factory operating characteristics of the diesel unit. An additional advantage is the availability of technical documentation and the extensive experience of workshops in servicing this generation of TDI engines, which facilitates both installation and subsequent service maintenance.

Selection, compatibility, and assembly aspects

When selecting an engine for the Audi A4 B8, the consistency of the unit code and design parameters with the vehicle's factory configuration is of key importance. The complete CJCB engine was developed specifically for this platform, which promotes compatibility with the control system, electrical installation, and accessories. Thanks to this, the workshop has the ability to carry out the replacement in an orderly manner, with a reduced need for modifying additional elements.

In practice, this translates into shorter vehicle downtime and a lower risk of operational problems after installation. It is worth consulting a mechanic or diagnostician before purchase to confirm the compatibility of the unit with the specific equipment version of the car. This approach allows you to fully utilize the potential offered by the complete engine from the Engines category intended for the Audi A4 B8.

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

Technical knowledge and additional materials

When planning a powertrain replacement, it is worth expanding your knowledge about the typical problems of diesel engines in popular mid-range models. A good point of reference can be the analysis of the design and failure rates of other brands, which is why we encourage you to read the article BMW E90 faulty engines – a practical guide to problematic units, which shows how important the proper selection and verification of the engine condition is before installation.

If you want to better understand what to pay attention to when buying used powertrain components and other automotive parts, our secondary market guide will also be helpful: best used car parts for popular brands and models. This will make it easier for you to assess how to effectively plan the repair and choose the right elements for your Audi.