Audi A4 B9 2.0 TDI 30 TDI Mild Hybrid Bare Engine DTNB 136HP 89k 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 B9 2.0 TDI 30 TDI Mild Hybrid Bare Engine DTNB 136HP 89k miles, WARRANTY is an original powertrain unit from the TDI family, designed for modern Audi A4 B9 generation models. The bare engine block serves as a solid foundation for professional repair or engine replacement, allowing for the use of existing ancillaries and maintaining factory performance characteristics. By preserving the OEM design, this engine block ensures consistency with factory solutions and facilitates precise installation.

Specifications and technical data

• SKU: 05L100031H
• Mark: Audi
• Condition: Used
• OEM Part Number: 05L100031H
• Substitutable numbers: 05L100031H, 05L 100 031 H
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Engine code: DTNB
• Mileage: 89 000

Technical characteristics of the DTNB unit

The presented engine block belongs to the Engines category and represents a modern Audi diesel construction. The DTNB unit operates in a four-cylinder configuration, which translates into balanced refinement, predictable torque characteristics, and excellent compatibility with the standard transmissions used in the A4 B9. The use of Diesel fuel promotes economical operation while maintaining adequate dynamics, especially during highway driving and on longer trips.

A bare engine block means you receive the core of the powertrain – the block with the cylinder head – prepared for transferring the ancillaries from your current engine. This solution is frequently chosen by workshops specializing in the Audi brand, as it allows for compatibility with the existing installation, ECU, and ancillaries, while significantly reducing the cost of a full replacement.

Application in Audi A4 B9 2.0 TDI 136HP

The DTNB engine was designed with modern injection systems and emission control systems used in the Audi A4 B9 in mind. The 136 HP output provides a balanced combination of performance and fuel consumption, which is particularly important in daily fleet and private use. The unit works well with both manual and automatic transmissions used in this generation of the A4, maintaining smooth torque delivery in the typical diesel RPM range.

Thanks to the preservation of the original specification, the DTNB block is suitable for users who expect predictable vehicle behavior after repair – without experimenting with other engine codes or structural modifications. This solution is particularly valued by service centers that prioritize consistent results and minimizing the risk of compatibility issues.

Benefits of choosing an original used engine block

Choosing a used, original Audi engine block allows for the preservation of factory geometry, materials, and manufacturing technology, which is significant for the durability and stability of the unit. Unlike solutions based on extensive reconditioning, the original block retains its primary structural parameters, and the workshop can focus on the correct transfer of ancillaries and routine maintenance.

Another significant advantage is the ability to accurately assess the condition of the unit based on mileage and visual verification of the block and cylinder head components before installation. For many customers and mechanics, this is a more predictable path than extensive repairs of an old engine, especially in cases of severe mechanical damage.

Professional installation and parts selection

To fully utilize the potential offered by the Audi A4 B9 2.0 TDI 30 TDI Mild Hybrid Bare Engine DTNB 136HP 89k miles, WARRANTY, installation in a specialized service center with experience in this generation of TDI units is recommended. Proper transfer of ancillaries, inspection of the lubrication and cooling systems, and verification of the engine control software ensure stable, consistent operation after replacement.

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

Technical knowledge and additional materials

When planning major powertrain repairs, it is worth expanding your knowledge about typical structural problems in modern engines. A good point of reference may be an article describing critical units in another popular mid-size model – check out the material on problematic BMW E90 engines and their impact on operating costs to better understand how the right choice of a used unit can reduce the risk of unplanned expenses.