Audi A4 B8 A5 8T A6 C6 Q5 8R 2.0 TDI Bare Engine CAHA 170HP 99k miles, 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.).

Audi A4 B8 A5 8T A6 C6 Q5 8R 2.0 TDI Bare Engine CAHA 170HP 99k miles, WARRANTY is a used, complete block with cylinder head designed for modern Audi diesel units. The bare engine serves as a solid base for professional powertrain rebuilding, allowing for the transfer of accessories from the previous engine while maintaining factory performance characteristics. This is a solution for users who want to restore their vehicle's efficiency in a technically correct and economically justified manner.

Specifications and technical data

• SKU: 03L100036C
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L100036C
• Substitutable numbers: 03L100036C, 03L 100 036 C, 03L100090FX, 03L 100 090 FX, 03L100036A, 03L 100 036 A
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Engine code: CAHA
• Mileage: 99 000

Purpose and compatibility of the CAHA unit

The offered bare engine belongs to the Engines category and is dedicated to popular Audi models with the 2.0 TDI 170 HP engine, marked with the CAHA code. This type of unit is used in, among others, the Audi A4 B8, A5 8T, A6 C6, and Q5 8R, making it an attractive option for repairs across a wide range of body styles – from sedans and coupes to SUVs.

The TDI family engine with direct injection is a popular choice due to its favorable combination of dynamics and reasonable fuel consumption. Using the correct engine with the appropriate code allows for maintaining compatibility with factory electronics, the fuel injection system, and accessories transferred from the damaged unit.

Bare engine construction and assembly advantages

The bare engine includes the essential structure of the engine, i.e., the block with cylinders and the cylinder head, without additional accessories. This configuration is particularly beneficial for repairs where the existing accessories (turbo, injectors, pumps, manifolds) remain functional and can be reused. This helps reduce costs while maintaining full control over the quality of the installed components.

The CAHA unit is a four-cylinder diesel engine, which translates into a compact design, good operating culture, and easier installation in the engine bay. The standard cylinder layout facilitates servicing, and the wide availability of consumables and accessories makes powertrain rebuilding predictable in terms of cost and time.

Operating parameters and performance characteristics

The 2.0 TDI 170 HP engine with the CAHA code is known for its flexibility in the mid-RPM range, which translates into comfortable driving both on the highway and in city traffic. The diesel construction provides favorable torque at low RPMs, which aligns well with the character of the A4, A5, A6, and Q5 models – from calm family driving to more dynamic use on the motorway.

The high-pressure injection system and modern architecture of the unit allow for reasonable fuel consumption while maintaining an adequate power reserve. A properly selected and installed engine is crucial for maintaining these parameters, which is why it is so important to use a component consistent with the engine code and model application.

Condition, mileage, and use in repairs

The offered engine is a used component, which in practice means an attractive compromise between cost and functionality when repairing major engine damage. The declared mileage allows for assessing the degree of wear and planning any necessary service activities during installation, such as replacing seals, the timing belt, or inspecting the cylinder head.

A base engine prepared in this way will work well both for standard replacement of a damaged unit and for more advanced renovation projects. For workshops specializing in the Audi brand, this is a convenient solution that enables efficient repair execution without the need for long-term regeneration of the old block.

Assembly recommendations and additional materials

When installing the bare engine, it is recommended to perform a full diagnostic of the accessories transferred from the old engine and to use new consumables (fluids, filters, seals). Professional installation in accordance with the manufacturer's procedures allows for fully utilizing the potential of this unit and minimizing the risk of future failures.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and want to better understand the typical problems of diesel units, it is worth checking out a practical guide on unreliable designs – you can find it in the article Unreliable BMW E90 engines – what can ruin your budget. Although it concerns a different brand, it helps to approach the topic of buying and installing a used engine consciously.

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 complete power units, short blocks, or engines with accessories, check out the available parts in the Audi Engines category.