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Select your vehicle
Vehicle Info Required to Guarantee FitAdd Vehicle

AC Delco®
131-128 GM Original Equipment Series Thermostat

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$63.85Save: $19.36(30%)
Manufacturer #131-128
Vehicle Info Required to Guarantee FitAdd Vehicle


Gasket not included
Quantity Sold:
Sold individually
24-months or unlimited mile AC Delco limited warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number:
REPC318003, 33009S
Stainless Steel
Opening Temperature Rating:
82 degrees C
Recommended Use:
OE Replacement
GM Original Equipment Series

Vehicle Fitment Information

Vehicle Name
Fitment Information
1993 Cadillac Allante
8 Cyl 4.6L
1993 Cadillac Allante
Indianapolis 500 Pace Car
8 Cyl 4.6L
1993 Cadillac Allante
Value Leader
8 Cyl 4.6L
1993 Cadillac Eldorado
8 Cyl 4.6L
1993-1994 Cadillac Eldorado
8 Cyl 4.6L
Page 1 of 6 | Showing 1 - 5 of 29 results

Product Information


The factory-original fit and lasting function of ACDelco’s OE replacement thermostats provide the perfect repair without breaking your budget. Established in 1899, ACDelco manufactures original GM parts and premium OE replacement parts for other brands in the automotive aftermarket.

  • High-grade design delivers extended lifespan
  • Carefully formed to suit your specific vehicle
  • Engineered to exact OE standards
  • Has undergone stringent evaluation to guarantee proper fit and performance
Need help?Call our product expert1-866-529-0412
Chat with us
Mondays - Sundays7am - 11pm ET | 4am - 8pm PT
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

does it come with o ring ?Anthony N.Nov 15, 2023
Best Answer:Hi Anthony, I'm glad to assist you. No, it doesn't. It is sold separately on this link: <a href="https://www.carparts.com/thermostat-gasket/ac-delco/ac12574478?can=CPAE1047_CSQA_20231115" target="_blank">https://www.carparts.com/thermostat-gasket/ac-delco/ac12574478?can=CPAE1047_CSQA_20231115</a> I hope this helps, and if you're interested in this thermostat, you can click on the link below for direct ordering to take advantage of our ongoing discount and limited stocks. Happy shopping. <a href="https://www.carparts.com/thermostat/ac-delco/ac131128?can=CPAE1047_CSQA_20231115" target="_blank">https://www.carparts.com/thermostat/ac-delco/ac131128?can=CPAE1047_CSQA_20231115</a>
Arnel E.STAFFNov 15, 2023

Customer Reviews

Definitely a perfect Match this Thermostat was exactly the fit and part was perfectly New
PAris B.
Purchased on Feb 28, 2023
Perfect fit easy install
Nasiaah B.
Purchased on Dec 22, 2023