VW Volkswagen Golf Mk7 Audi A3 8V 1.2 TSI Bare Engine CJZA 105HP 89k, 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 Mk7 Audi A3 8V 1.2 TSI Bare Engine CJZA 105HP 89k, WARRANTY is a used, original engine block from the VAG group, designed for 1.2 TSI petrol units with the CJZA engine code. This bare engine base provides a solid foundation for professional repair or a complete rebuild of the powertrain in your Volkswagen Golf Mk7 or Audi A3 8V, while maintaining factory performance characteristics.

Specifications and technical data

• SKU: 04E100031C
• Mark: Audi
• Condition: Used
• OEM Part Number: 04E100031C
• Substitutable numbers: 04E100031C, 04E 100 031 C, 04E100098BX, 04E 100 098 BX
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Engine code: CJZA
• Mileage: 89 000

Purpose and characteristics of the CJZA 1.2 TSI engine

The presented engine block belongs to the Engines category and is dedicated to the 105 HP 1.2 TSI petrol unit with the CJZA designation, used in popular VW Golf Mk7 and Audi A3 8V models. The four-cylinder design ensures balanced operation, and the compact 1.2 TSI displacement allows for economical operation while maintaining adequate dynamics for daily city and highway driving.

A bare engine means you receive the base of the powertrain – the block with the cylinder assembly and cylinder head – prepared for further equipping with components compatible with your car's configuration. This solution is particularly beneficial when the previous engine has suffered mechanical damage, but the accessories (turbo, injectors, manifolds, wiring harness) remain in a condition suitable for reinstallation.

Construction, operating parameters, and user benefits

The CJZA unit is a modern, four-cylinder petrol engine from the TSI family, designed for efficient combustion and good flexibility in the low and mid-RPM ranges. The use of four cylinders promotes even load distribution, which translates into stable operation and predictable drivetrain behavior in various road conditions.

The 105 HP 1.2 TSI petrol engine works well with both manual and automatic transmissions, offering:

• efficient acceleration in typical speed ranges,
• moderate fuel consumption during calm driving,
• acoustic comfort appropriate for compact class cars.

By maintaining the original engine unit specification, you can count on consistency of parameters with factory engine control unit settings, which facilitates adaptation after installation and minimizes the risk of compatibility issues.

Application in VW Golf Mk7 and Audi A3 8V

This engine block is intended for installation in VW Golf Mk7 and Audi A3 8V vehicles equipped with the 1.2 TSI engine with the CJZA code. Replacing a damaged unit with a complete block while keeping the same engine code allows you to maintain the original vehicle configuration without the need for modifications to the electrical installation or ECU software, provided the selection is made in accordance with factory markings.

Engine mileage is an important parameter when planning further operation – it allows you to assess the unit's potential and plan any necessary service activities after installation (e.g., replacing fluids, seals, or wear-and-tear components). In the case of this unit, the mileage has been verified based on dismantling data, which facilitates an informed purchasing decision.

Condition, origin, and benefits of choosing a used engine block

The engine comes from dismantling and is offered as a used engine block, which is a reasonable compromise between repair costs and maintaining the original quality of VAG group parts. This type of solution is often chosen by workshops specializing in VW and Audi repairs because it allows for a significant reduction in powertrain rebuild costs compared to purchasing a brand-new unit.

The selection of the appropriate engine block for a specific car should always be based on the engine code and OEM numbers. In case of doubt, it is worth using the help of a specialist or the VIN-based selection procedure to ensure full mechanical and software compatibility with the vehicle's existing installation.

If you want to better understand how to safely choose used engine units and what the real cost differences are compared to new parts, check out our guide: Why it is worth buying used gearboxes and engines – facts instead of myths.

Support for selecting and upgrading Audi powertrain systems

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 additional engine blocks, complete units, or other drivetrain configurations, check out the available parts in the Audi Engines category.

If necessary, you can consult your mechanic on the scope of work related to the engine block swap – from transferring accessories and checking for leaks to the first start-up and adaptation. A properly selected and correctly installed 1.2 TSI CJZA engine block will restore your VW Golf Mk7 or Audi A3 8V to full operational efficiency and maintain driving characteristics consistent with factory specifications.