Engines and Components Engine Covers, Pans and Dress-Up Components

Industrial Injection

Industrial Injection CUMMINS ROCKER COVER GASKETS - CU-3963379

$56.92

SKU: I002 CU-3963379

In Stock
In Stock
Ships by Jun 16
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Cummins 3963379 is an OEM rocker lever cover gasket, also known as a rocker box gasket, designed for 2003-2024 5.9L and 6.7L Cummins diesel engines.

This genuine Cummins gasket provides a reliable seal between the rocker lever cover and the cylinder head assembly, helping to prevent oil leaks and maintain proper engine operation. It is suitable for use during valve train servicing, injector component replacement, rocker cover removal, or when repairing oil leaks around the top of the engine.

Fitment

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Specifications

BrandIndustrial Injection
Part NumberI002 CU-3963379

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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