Tensioner Auto.
Assembled device that applies load to the drive belt.

• Maintains the tension in the drive belt, which sends power to essential vehicle components like your alternator and power steering
• If failing, it could cause the engine to overheat and loss of power steering system
• Generally needs to be replaced about every 50,000 to 100,000 miles

Your Accessory Drive Belt Tensioner works to hold the tension in the serpentine belt, also called the drive belt. The Nissan drive belt is important to your vehicle's overall handling and performance, as it hooks up the alternator, power steering, and A/C to the engine to make sure power continues to flow from the engine to these vehicle accessories.

An Nissan old accessory drive belt tensioner could produce a frayed drive belt or a squealing sound when the engine starts. If extremely worn out, the Accessory Drive Belt Tensioner could cause the drive belt to break and then all of the accessories it powers to break along with it. The Nissan engine might start overheating. Or, you could end up with a loss of power steering or loss of charge from the alternator. These events can make it nearly impossible to keep operating your vehicle.

It's a good idea to get a new Accessory Drive Belt Tensioner before you note severe wear and tear. Many auto technicians suggest a replacement tensioner pulley at 50,000 to 100,000 mile intervals.

Installing a replacement Nissan accessory belt tensioner requires more advanced automotive skills, as the process involves a handful of special tools, unhooking the battery, picking the correct belt to replace, and balancing the Accessory Drive Belt Tensioner to have the perfect amount of tension. If the belt isn't tight enough, it can get pulled into other engine parts or fall off. If the belt is over-tightened, it will put extra strain on the system and cause components to seize up.

Trust the OEM pros at Nissan Parts. Order a replacement belt tensioner for your Nissan Quest 2014-2017 from Nissan Parts, and head to your Nissan service center for Accessory Drive Belt Tensioner installation help. Click on the "What This Fits" tab for more fitment details.

Fits JX35, QX60