Descripción
Genuine Valve Cover for the 2025–2026 Chevrolet Silverado with the 3.0L Duramax inline-6 turbo-diesel
This is a new, genuine GM valve cover with OEM part number 40009443, engineered for the 3.0L Duramax inline-6 turbo-diesel engine in the 2025–2026 Chevrolet Silverado. Leaking covers and seals drip oil onto hot exhaust parts. Genuine covers and seals fit the factory bolt pattern and PCV routing. Mason’s Auto Store sells it 36% below the manufacturer’s suggested retail price and ships it across the USA from our Battle Creek, Michigan warehouse.
Catalog fitment notes: 3.0L diesel. Silverado, Sierra. Yukon XL.
Specifications
| Part type | Valve Cover |
|---|---|
| OEM part number | 40009443 |
| Brand | GM Genuine |
| Engine | 3.0L Duramax inline-6 turbo-diesel |
| Fits | 2025–2026 Chevrolet Silverado |
| Condition | New OEM (genuine factory part) |
| Warranty | 12 months (manufacturer parts warranty) |
Will it fit my Chevrolet Silverado?
Engine, trim, drivetrain and production date all affect the correct part number. Confirm your engine on the emissions label under the hood or from the 8th character of your VIN, compare the OEM number 40009443 with your old part, or add your 17-digit VIN at checkout — we verify fitment for free before shipping. Shops and fleets can send a bulk inquiry for one combined quote.
Why buy from Mason’s
- Family parts business serving drivers since 1936
- Genuine OEM part number and engine shown on every listing
- Pay by card, Afterpay, Zelle, Cash App or bank transfer — ships once payment is confirmed
- Optional shipping insurance and 30-day returns on unused parts
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