Water Pump Cover Seal - GM (12643779)
Genuine OEM GM Parts & Accessories - 12643779
Water Pump Cover Seal - GM (12643779)
Genuine OEM GM Parts & Accessories - 12643779
- GM
- 12643779
Details
- Brand:
- SKU:
12643779
- Other Names:
Water Pump Gasket
- Description: ACDelco Water Pump Cover Seal (Part Number: 12643779) is an O-ring style seal for water pump cover connections designed to maintain a coolant-tight joint.Buy from World Parts Direct — American company, best price, compatibility guarantee and OEM-backed warranty with expert support.
- Type: O-ring / water pump cover seal (gasket)
- Function: Forms a sealed connection for coolant passages on 6.6L diesel Silverado/Sierra 2500/3500 HD applications per factory notes
- Also known as: Water Pump Gasket
- Condition: New
- Notes: Included with water pump.
- Applications: 6.6L DIESEL.
- MSRP: $8.00
- Discount: $2.01 (25.1% off)
- Sale Price: $5.99
Fast Delivery
Most in-stock items ship within 1–3 business days. Special orders may take longer.
OEM Parts. Wholesale Prices.
Genuine OEM parts with a nationwide warranty. Lowest pricing guaranteed.
Shop With Confidence
Secure checkout, verified fitment, and dealer-backed support from real parts experts.
- GM
- 12643779
Details
- Brand:
- SKU:
12643779
- Other Names:
Water Pump Gasket
- Description: ACDelco Water Pump Cover Seal (Part Number: 12643779) is an O-ring style seal for water pump cover connections designed to maintain a coolant-tight joint.Buy from World Parts Direct — American company, best price, compatibility guarantee and OEM-backed warranty with expert support.
- Type: O-ring / water pump cover seal (gasket)
- Function: Forms a sealed connection for coolant passages on 6.6L diesel Silverado/Sierra 2500/3500 HD applications per factory notes
- Also known as: Water Pump Gasket
- Condition: New
- Notes: Included with water pump.
- Applications: 6.6L DIESEL.
Also Purchased
Vehicle Fitment
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|
WorldPartsDirect.com
Thanks for shopping with World Parts Direct, home of the low-price and right-part-guarantee! Everything we carry is genuine, OEM and ships straight from a licensed dealership. All of our products are backed by a nationwide warranty and can be returned within 30 days if you no longer need it. What's the catch? There isn't one! Nobody beats our prices and nobody offers higher quality parts than we do, and if we cannot get the part you need, nobody can! We offer hundreds of thousands of unique items, including discontinued parts. Your satisfaction is our top priority and we hope you'll give us the opportunity to earn your business today.
GM

Built with GM’s engineering expertise, ACDelco and OEM GM parts are factory original equipment replacement parts for your Chevy, Buick, Cadillac, GMC, Saturn, Pontiac, Oldsmobile or Hummer. Every ACDelco and OEM GM part is rigidly held to federal safety and quality standards and is guaranteed by GM Replacement Parts Limited Warranty. You can trust GM Genuine Parts when ordering this Water Pump Cover Seal for your 2015-2025 vehicle. GM Parts & Accessories Limited Warranty.
