Audi A4 B9 A5 F5 Bare Engine DEUA 2.0 35 TDI Diesel 150HP 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 B9 A5 F5 Bare Engine DEUA 2.0 35 TDI Diesel 150HP 99k miles, WARRANTY is a used, factory-original engine block from dismantling, designed for modern mid-size Audi models. This bare power unit provides a solid foundation for professional repair or a complete rebuild of the drivetrain, while maintaining original performance characteristics. It is a solution for users and workshops looking for a proven diesel engine with stable operating parameters.

Specifications and technical data

• SKU: 04L100091S
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L100091S
• Substitutable numbers: 04L100091S, 04L 100 091 S, 04L100091SX, 04L 100 091 SX
• Fuel type: Diesel
• Number of cylinders: 4
• Part type: Engine Long Block
• Category: Engines
• Engine code: DEUA
• Mileage: 99 000

Technical specifications of the DEUA 2.0 35 TDI engine block

The presented engine block belongs to the Engines category and is intended for Audi vehicles from the A4 B9 and A5 F5 families, equipped with the DEUA diesel unit. The four-cylinder design ensures a balanced compromise between refinement and fuel economy, which is particularly important in premium cars used both on the highway and in daily city traffic.

The diesel engine of this series is designed for efficient combustion and appropriate torque in the low and mid-RPM ranges. As a result, it works well with modern transmissions and drivetrain management systems, ensuring predictable throttle response and stable performance in typical road conditions.

Application and compatibility

The bare DEUA engine block is intended to be fitted with accessories from your vehicle or other compatible components. This configuration allows the workshop to maintain control over the selection of auxiliary elements (fuel injection system, external accessories, wiring) and match them to the specific vehicle specification.

This type of unit is particularly useful in situations where the existing engine has suffered severe mechanical damage or requires uneconomical repairs. Using a complete engine block allows for reduced vehicle downtime and simplifies the service process, as key components of the block and cylinder head are already integrated into one base unit.

Benefits of choosing a used engine block

Choosing a used engine block from the DEUA series is a solution that allows you to optimize repair costs while maintaining the original design of the Audi powertrain. Compared to a full overhaul of a damaged engine, installing a ready-to-use block often means shorter turnaround times and a lower risk of additional surprises during workshop work.

The most important advantages of this solution include:

• preservation of the factory architecture of the Audi powertrain,
• possibility to use existing accessories from the vehicle,
• more predictable scope of mechanical work,
• cost reduction compared to purchasing a new engine.

Additionally, the known mileage of the unit allows for a better assessment of its potential for further operation and the planning of any preventive maintenance (e.g., replacing selected seals or auxiliary components) before installation in the car.

Designed for demanding users and workshops

This engine block is a particularly interesting proposition for professional service centers and conscious users who want to restore full functionality to the drivetrain in an Audi A4 B9 or A5 F5, while maintaining consistency with factory specifications. The 2.0 35 TDI diesel unit with 150 HP is often chosen for its balanced performance and reasonable fuel consumption, which translates into comfort in daily use.

Before installation, standard workshop procedures are recommended: verifying the condition of seals, checking mounting points, and preparing the appropriate accessories. This approach minimizes the risk of subsequent leaks and allows you to fully utilize the potential of the DEUA unit in long-term operation.

Additional information and guide materials

If you are planning a comprehensive repair or upgrade of the engine area in your vehicle and need other components from the same group, such as the block, cylinder head, or crankshaft, check out the available parts in the Audi Engines category.

When planning larger investments in the drivetrain, it is also worth learning about typical problems occurring in other popular models. For example, for the E90 series, a detailed guide on critical power units has been prepared – you can find it in the article Faulty BMW E90 engines: check what can ruin your budget!, which helps to better assess the risks associated with operating used engines and plan repairs consciously.