By-Pass Pipe Seal - GM (12658352)
Details
- Brand:
- SKU:
12658352
- Positions: Upper
- Other Names:
By-Pass Pipe Upper Seal, Engine Coolant Pipe O-Ring, Seal
- Description: GM Genuine Parts By-Pass Pipe Seal (Part Number: 12658352) is an O-ring style seal used on the thermostat bypass or coolant bypass pipe—specified for 6.6L diesel applications.
- Function: Seals the bypass connection to prevent coolant leakage.
- Application: Service replacement for coolant/air conditioning system maintenance in specified diesel engines.
- Service note: Replace seals whenever disassembling coolant components to ensure leak-free reassembly.
World Parts Direct — a U.S. distributor offering great value, compatibility guarantee, and OEM-level parts expertise.
- Condition: New
- Notes: Included with by-pass pipe.
Also Purchased
Vehicle Fitment
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|
Next Day Parts
Welcome to nextdayparts.com — home of the Low-Price and Right-Part Guarantee. We offer genuine OEM parts for General Motors and MOPAR vehicles, shipped directly to your door. Enjoy unmatched convenience, incredible savings, and reliable, human support.
Every part we sell is brand new, in the manufacturer’s original packaging, and backed by the full factory warranty. These are the exact same parts installed at the factory — no substitutes, no guesswork.
Whether you're ordering for routine maintenance, collision repair, or a full restoration, our expert team is here to help. We offer a free compatibility guarantee when a VIN is provided, ensuring you get the right part the first time.
Have questions? Our parts professionals are ready to assist by phone, text, or email. We ship to more than 220 countries worldwide and are proud to serve both everyday drivers and automotive professionals.
GM
Shop authentic OEM MOPAR & GM products. Keep your vehicle running at its best by using only authentic OEM parts.
