Engine Camshaft Housing, Duramax 3.0L | 2020 - 2026

This is the camshaft housing assembly for 2020-2026 trucks and SUVs with the 3.0L Duramax diesel, covering both the LM2 and LZ0 engines. GM part number 40009443.

Key Features

• Camshaft housing assembly
• GM part number 40009443
• Fits the 3.0L Duramax LM2 and LZ0

Benefits

• Direct replacement for the factory camshaft housing
• One part number covers 2020-2026 3.0L Duramax trucks and SUVs

Frequently Asked Questions

Does this fit both the LM2 and the LZ0?
Yes. It fits the 2020-2022 LM2 and the 2023-2026 LZ0 3.0L Duramax.

What vehicles does this fit?
Chevy Silverado 1500 and GMC Sierra 1500 with the 3.0L Duramax, and the 3.0L Duramax Chevy Tahoe, Chevy Suburban, GMC Yukon and GMC Yukon XL. See Fitment for years.

Is there a gasket for the camshaft housing?
Yes. The camshaft housing gasket kit, GM 55502647, is linked below.

Fitment

• 2020-2026 Chevy Silverado 1500 and GMC Sierra 1500 with 3.0L Duramax (LM2, LZ0)
• 2022 Chevy Silverado 1500 LTD and GMC Sierra 1500 Limited with 3.0L Duramax
• 2021-2026 Chevy Tahoe and Chevy Suburban with 3.0L Duramax
• 2021-2026 GMC Yukon and GMC Yukon XL with 3.0L Duramax

Related 3.0L Duramax parts: Camshaft Cover Gasket, LM2, LZ0, LM2 Timing Chain Kit, LZ0 Timing Chain Kit, Head Gasket Kit, LM2 and Head Gasket Kit, LZ0.

What's Included

• (1) Camshaft housing assembly

For warranty information or to submit a claim, see our Warranty Form.