This is a Genuine Nissan tensioner assembly for the accessory drive belt, engineered specifically for the Nissan Navara D40 and Pathfinder R51 models equipped with the YD25 engine. Mounted to the front of the engine, this complete assembly is responsible for maintaining the correct tension on the main drive belt, which is critical for the proper operation of your alternator, power steering pump, and air conditioning compressor.
A failing tensioner, often due to a weakened internal spring or a worn pulley bearing, can lead to incorrect belt tension. The most common symptoms are a persistent squealing or chirping noise from the engine bay, or a noticeable drop in performance from your vehicle's accessories. This complete unit, which includes the pulley and adjuster mechanism, is the definitive solution, especially as the adjuster bolt is known to snap, making a full replacement a much more practical repair.
Installation is a straightforward task for a workshop or a confident DIY mechanic with the correct tools. Access to the front of the engine is required to release the old belt tension before unbolting the assembly. It is highly recommended to replace the accessory drive belt at the same time as the tensioner. You should also inspect any related idler pulleys for wear while you have access.
Please check vehicle fitment to confirm compatibility with your vehicle. Please contact us with your VIN details if you require further assistance to confirm fitment.
Choosing genuine Nissan parts ensures the quality and fit for your Nissan. Unlike some aftermarket alternatives, genuine Nissan parts are manufactured to exacting standards, using materials specifically designed to withstand the rigors of Australian conditions. Guaranteeing performance, service life, and reliability.
