Pulley Tensioner. Tensioner Belt.
An oil pressurized tensioner that keeps the chain that runs from the crankshaft to camshaft or the chain that runs from camshaft to camshaft, from becoming loose and jumping a tooth or more causing engine damage or out of sync crankshaft to camshaft timing.

• Helps keep your engine operating as it should
• Ensures the timing chain receives the proper amount of tension
• Replace when worn out or damaged

The timing chain on your vehicle ensures that the engine valves open and close at the correct intervals. It's important that the timing chain has a balanced amount of tension to keep the rotation of the camshaft and crankshaft in sync and make sure the engine valves are opening and closing at the right intervals. The Engine Timing Chain Tensioner ensures that the timing chain receives the proper amount of tension to keep your engine working like it's supposed to.

Over time, your INFINITI's timing chain can stretch. The Engine Timing Chain Tensioner keeps the timing chain in the correct position and under the correct amount of pressure, despite any stretching that might occur. If the Engine Timing Chain Tensioner on your vehicle is broken or worn out, the timing chain could lose tension and fall out of place. If the vehicle is running when the timing chain falls out of place, it could cause the chain to snap. Without a functioning timing chain, the engine pistons and valves may collide, and your engine won't be able to operate.

If your Engine Timing Chain Tensioner needs to be replaced, you may notice a rattling noise around the engine bay. A metal-on-metal sounding rattle could signify that your timing chain has lost tension and might be worn out. Eventually, a loose timing chain may lead to additional problems, such as an oil leak.

If you believe your Engine Timing Chain Tensioner is damaged or worn out, it's best to let a professional technician inspect it to replace or repair it, as the timing chain is typically difficult to access.

If it's time to replace your Engine Timing Chain Tensioner, purchase a new replacement tensioner from genuine INFINITI Parts. Find your closest authorized INFINITI service center for help with professional installation.

This Engine Timing Chain Tensioner fits your INFINITI M37, INFINITI M56, INFINITI Q70, INFINITI QX56, or INFINITI QX80. See the What This Fits tab for more details.

Fits M56, Q70, QX56, QX80