What does an idler pulley do on my Jeep Wrangler?

The idler pulley helps maintain proper tension on your serpentine belt. It guides the belt along its path, ensuring that components like the alternator, power steering pump, and A/C compressor receive consistent power.

How do I know if I need to replace my idler pulley?

Common signs include a squealing or chirping noise coming from the engine bay, especially when the engine is cold or under load. You might also notice excessive belt wobble or wear on the pulley itself.

Does this idler pulley come with a new belt?

No, this part is just the idler pulley. You will need to purchase a new serpentine belt separately if your belt also needs replacement.

Omix Idler Pulley- 12-18 Wrangler JK- 18-21 JL/JT 3.6L

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OMIX

Specifications

Brand: OMIX
Part #: 17112.27
UPC: 804314306939

OMIX

Omix Idler Pulley- 12-18 Wrangler JK- 18-21 JL/JT 3.6L

Name: Omix Idler Pulley- 12-18 Wrangler JK- 18-21 JL/JT 3.6L
Brand: OMIX
Price: 17.14 USD
Availability: InStock

$17.14

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2012-2020 Jeep Wrangler. This Omix idler pulley is a direct replacement for your 3.6L engine, ensuring smooth belt operation.

Key Features

Fits 2012-2020 Jeep Wrangler, 2018 Jeep Wrangler JK, and 2020-2024 Jeep Gladiator models with 3.6L engines.
Direct fit design for easy installation, replacing OE part 4627039AA.
Built to meet or exceed original manufacturer specifications for reliable performance.
Ensures smooth operation of the serpentine belt system.
Backed by a limited 5-year warranty from Omix.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

Jeep Gladiator 2020-2024
Jeep Wrangler 2012-2020
Jeep Wrangler JK 2018

Product Details

If your Jeep Wrangler's serpentine belt is making noise or you're replacing worn components in the engine bay, a new idler pulley is often a smart move. This Omix idler pulley is built to replace the original part on 2012-2020 Jeep Wranglers with the 3.6-liter engine, as well as 2020-2024 Jeep Gladiators with the same engine.

This pulley is designed as a direct fit, meaning it installs just like the factory part without needing any modifications. It's made to meet or exceed the original manufacturer's specifications, so you can trust it to keep your serpentine belt running smoothly and quietly. A well-functioning idler pulley is key to ensuring your alternator, power steering pump, and A/C compressor all operate correctly.

This part comes with a limited 5-year warranty from Omix, giving you peace of mind with your purchase.