Jaguar XF X250 3.0 AJV6D TDV6 Diesel Toothed Crankshaft Pulley 4R80-6B319-AA

Jaguar XF X250 3.0 AJV6D TDV6 Toothed Crankshaft Pulley is an original component from the Tensioners and pulleys group, designed for the diesel engine in the XF X250 model. This used OEM part ensures proper cooperation with the diesel engine accessories, maintaining the factory operating parameters of the drive system.

Specifications and technical data

• SKU: 4R80-6B319-AA
• Mark: Jaguar
• Condition: Used
• OEM Part Number: 4R80-6B319-AA
• Substitutable numbers: 4R80-6B319-AA
• Fuel type: Diesel
• Category: Tensioners & Pulleys

Purpose and function of the crankshaft pulley

The crankshaft pulley in the 3.0 AJV6D TDV6 unit is responsible for transferring drive from the crankshaft to engine accessories, such as belt drive components. A properly selected pulley stabilizes the operation of the auxiliary drive, reduces torsional vibrations, and supports the smooth operation of the diesel unit.

In diesel engines, where torque is high, the appropriate characteristics of the pulley are important for smooth operation, noise reduction, and the durability of cooperating components. Using an original element from the same design group allows for consistency with the factory system design.

Benefits of using an original Jaguar component

Choosing a pulley from the same production line as the factory components means:

• maintaining the correct operating profile of the belt drive system in a diesel engine,
• perfect fit to the geometry of the crankshaft and other accessory components,
• no need for modifications or mounting adaptations,
• consistency with the vehicle manufacturer's factory specifications.

As a result, installation is predictable, and the risk of issues with misalignment, excessive vibrations, or premature wear of other auxiliary drive components is limited. This is particularly important in modern diesel units, where operating tolerances are strictly defined.

Application in the 3.0 AJV6D TDV6 diesel engine

The presented pulley is intended for the diesel power unit used in the Jaguar XF X250. The design of this engine requires auxiliary drive components with appropriately selected stiffness and damping characteristics to withstand the loads generated by high torque.

Selecting the correct pulley affects:

• crankshaft operating stability under various loads,
• proper belt tension in the accessory system,
• reduction of vibration transfer to other engine components.

Using an element consistent with the vehicle manufacturer's design helps maintain predictable operating conditions for the drive system and reduces the risk of unwanted vibrations in the long term.

Jaguar tensioners and pulleys – system expansion and service

If you are planning a comprehensive repair or upgrade of the engine area in your Jaguar and need other elements from the same group, such as additional guide pulleys, tensioners, or cooperating pulleys, check the available parts in the Jaguar tensioners and pulleys category.

Used OEM part – a conscious service choice

For components such as the crankshaft pulley, many users opt for a used OEM part to maintain factory fitment at reasonable service costs. An original component from dismantling usually does not require modifications, and its geometry and mounting method are consistent with the manufacturer's specifications.

If you are considering when it is worth choosing a used element instead of a new replacement, a practical guide describing typical service situations may be helpful – you can find it in the article 5 reasons why a used OEM part is a better choice than a replacement.

Additional technical support

When working on diesel engine accessories, it is worth paying attention to the general condition of the drive system, including components responsible for power supply and charging. In case of doubts related to the operation of the electrical system, a service guide describing typical failure symptoms and how to diagnose them, available in the article When is it worth replacing an alternator with a used one: a practical guide for drivers, may be helpful.