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3689620
Idler Gear
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$669.99 $870.99
Genuine OEM Part

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing. We make it easy to buy truck parts online.

Manufacturer Warranty*
DESCRIPTION
The Idler Gear, also known as Part Number 3689620, is a component of the truck's engine that helps regulate the timing of the camshaft and crankshaft. It is a small gear that does not transmit power but plays an important role in ensuring smooth engine operation. The idler gear is typically located in the front of the engine and is connected to both the camshaft and crankshaft via timing belts or chains. Its primary function is to maintain proper tension on these belts or chains, which keeps them from slipping or jumping teeth. Without a properly functioning idler gear, engine performance can be negatively affected by misaligned timing, reduced power output, and increased wear on other components such as valves and pistons.
RELATED PARTS
Supersedes
3681674, 3686936, 3690436

SPECIFICATIONS

Package Dimensions
11.2 x 2.5 x 11.7 in
Weight
13.9 lb
* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.

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