VW Volkswagen Golf 6 Touran Polo Audi A3 1.6 TDI 90HP Bare Engine CAYB 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.).

VW Volkswagen Golf 6 Touran Polo Audi A3 1.6 TDI 90HP Bare Engine CAYB WARRANTY is a factory-spec powertrain from the Volkswagen Group, designed for popular compact and family models. This diesel unit is valued for its stable operating characteristics, reasonable fuel consumption, and excellent compatibility with vehicle electronics. By maintaining the original specifications, it serves as a practical service solution when replacing a damaged engine.

Specifications and technical data

• SKU: 03L100090QX
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 03L100090QX
• Substitutable numbers: 03L100090QX, 03L 100 090 QX, 03L100031D, 03L 100 031 D
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical characteristics of the 1.6 TDI CAYB unit

The presented engine belongs to the Engines category and was designed as a modern diesel unit for daily operation. The four-cylinder layout provides a balanced compromise between refinement and mechanical efficiency. The diesel construction allows for effective use of torque in the low and mid-RPM ranges, which translates into smooth acceleration in both city and highway driving.

The CAYB engine is widely used in VW Golf 6, Touran, Polo, and Audi A3 models, making it easy to select the right unit for repairs or replacement. The unit was developed to work with modern control systems, which promotes precise fuel metering and stable operating parameters under various load conditions.

Application in VW and Audi vehicles

The 1.6 TDI CAYB engine is used in a wide range of body styles – from the compact VW Polo and the versatile VW Golf 6, to the spacious VW Touran and the premium segment Audi A3. As a result, it is a popular choice as a replacement in the event of a factory unit failure, especially where maintaining original driving characteristics and compatibility with the existing installation is a priority.

In practice, installing this unit in VAG group vehicles allows for:

• maintaining factory powertrain performance parameters,
• ensuring compatibility with the factory engine control unit software,
• reducing the need for additional mechanical and electrical modifications.

Benefits of choosing a used CAYB engine

Choosing a used engine from the 1.6 TDI family is often a cost-effective solution compared to rebuilding a heavily worn unit. A properly selected engine allows for restoring vehicle functionality while keeping the repair budget reasonable. Additionally, the engine's mileage is a key parameter when assessing its potential for further operation – a lower value usually indicates less wear on moving parts and accessories.

To better understand how to safely select used power units and what to look for when choosing by engine code or OEM number, it is worth reading our expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. The article discusses, among other things, verification procedures, common myths, and the ratio of repair costs versus purchasing a used component.

Practical installation and maintenance tips

Before installation, standard service procedures are recommended, such as replacing consumables, checking system tightness, and verifying the accessories working with the power unit. This helps reduce the risk of future service downtime and optimizes the total cost of repair.

For diesel engines, it is particularly important to:

• properly bleed the fuel system after installation,
• check the condition of the intake and exhaust systems,
• verify proper communication with the vehicle's electronics after the first start-up.

Volkswagen engines – expansion and modernization of the powertrain

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