Valve Cover - GM (12735921)
Genuine OEM GM Parts & Accessories - 12735921
Valve Cover - GM (12735921)
Genuine OEM GM Parts & Accessories - 12735921
- GM
- 12735921
- 12650072, 12705388
Details
- Brand:
- SKU:
12735921
- Other Names:
Insulator
- Description: GM Genuine Parts Passenger Side Valve Rocker Arm Cover Insulator (Part Number: 12735921) is an OE insulator designed for the valve rocker arm cover on supercharged engines to help manage heat and provide correct sealing.Buy from World Parts Direct — a U.S.-based distributor offering competitive prices, compatibility guarantees, and OEM-aligned technical help.
- Function: Insulates and seals valve rocker arm cover to help protect surrounding components and reduce heat transfer
- Application: Passenger side insulator for supercharged engines (2016–2019 outer application noted)
- Quality: Manufactured to GM OE specifications for fit and performance
- Replaces:
12650072, 12705388
- MSRP: $143.43
- Discount: $53.90 (37.6% off)
- Sale Price: $89.53
Fast Delivery
Most in-stock items ship within 1–3 business days. Special orders may take longer.
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- GM
- 12735921
- 12650072, 12705388
Details
- Brand:
- SKU:
12735921
- Other Names:
Insulator
- Description: GM Genuine Parts Passenger Side Valve Rocker Arm Cover Insulator (Part Number: 12735921) is an OE insulator designed for the valve rocker arm cover on supercharged engines to help manage heat and provide correct sealing.Buy from World Parts Direct — a U.S.-based distributor offering competitive prices, compatibility guarantees, and OEM-aligned technical help.
- Function: Insulates and seals valve rocker arm cover to help protect surrounding components and reduce heat transfer
- Application: Passenger side insulator for supercharged engines (2016–2019 outer application noted)
- Quality: Manufactured to GM OE specifications for fit and performance
- Replaces:
12650072, 12705388
Also Purchased
Vehicle Fitment
| Year | Make | Model | Body & Trim | Engine & Transmission |
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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 Valve Cover for your 2016-2025 vehicle. GM Parts & Accessories Limited Warranty.
