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GM Genuine Parts Engine Coolant Thermostat O-Ring
OE

GM Genuine Parts Engine Coolant Thermostat O-Ring

GM Part #12551507

ACDelco Part #12551507

MSRP$11.52*

GM Genuine Parts Engine Coolant Thermostat Seals are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Seals your vehicle's thermostat housing
  • Helps prevent coolant from leaking from the engine
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

About this product

GM Genuine Parts Engine Coolant Thermostat Seals are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These seals help prevent coolant leaks from your vehicle's engine. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • Seals your vehicle's thermostat housing
  • Helps prevent coolant from leaking from the engine
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Inside Diameter1.92 in / 48.77 mm
Outside Diameter2.31 in / 58.67 mm
Thickness0.15 in / 3.8 mm
Height0.6in
ClassificationOE
Width2.7in
Length3.8in
MaterialRubber

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Good Maintenance Practices:

  • Have cooling system inspected immediately if instrument panel-mounted temperature gauge indicates engine overheating
  • Change coolant at required intervals

ModelBody StyleTrimYear(s)
Commercial Chassis1994, 1995, 1996
Roadmaster1994, 1995, 1996