The idler pulley (23770AA020) is a component that works in tandem with the drive belt of your engine. This pulley makes sure that the drive belt is properly aligned as it spins to power the water pump, alternator, AC compressor, and power steering pump. While most engines use only one idler pulley, other models have multiple pulleys. Similar to most auto parts, this component will eventually wear out as it repeatedly rotates due to the drive belt.

One of the major signs that your idler pulley needs replacement is visible wear. You’ll notice scoring marks on the pulley and will eventually reduce the tension with the drive belt and cause it to slip or detach. Another indication of a faulty idler pulley is squealing noises coming from the engine. These complications can lead to cracking, breaking, and engine complications.

If you need to replace your idler pulley, SubaruOnlineParts got you covered. We offer genuine idler pulley replacements for select Subaru models sold for less than the manufacturer’s suggested retail price. We do not offer used or aftermarket Subaru parts and accessories on our website.

Drop us a line for your fitment and installation concerns, as our in-house experts are always ready to assist you. Find OEM idler pulley replacements and other OEM Subaru engine components at discounted prices when you shop at SubaruOnlineParts today.

The idler pulley (23770AA020) is a component that works in tandem with the drive belt of your engine. This pulley makes sure that the drive belt is properly aligned as it spins to power the water pump, alternator, AC compressor, and power steering pump. While most engines use only one idler pulley, other models have multiple pulleys. Similar to most auto parts, this component will eventually wear out as it repeatedly rotates due to the drive belt.

One of the major signs that your idler pulley needs replacement is visible wear. You’ll notice scoring marks on the pulley and will eventually reduce the tension with the drive belt and cause it to slip or detach. Another indication of a faulty idler pulley is squealing noises coming from the engine. These complications can lead to cracking, breaking, and engine complications.

If you need to replace your idler pulley, SubaruOnlineParts got you covered. We offer genuine idler pulley replacements for select Subaru models sold for less than the manufacturer’s suggested retail price. We do not offer used or aftermarket Subaru parts and accessories on our website.

Drop us a line for your fitment and installation concerns, as our in-house experts are always ready to assist you. Find OEM idler pulley replacements and other OEM Subaru engine components at discounted prices when you shop at SubaruOnlineParts today.