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2004 Chevrolet S10

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ACDelco 12S21 Engine Coolant Thermostat Seal
for 2004 Chevrolet S10 4.3L V6 Gas OHV

ACDelco 12S21 Engine Coolant Thermostat Seal - 2004 Chevrolet S10

ACDelco
Brand:ACDelco
Part Number: 12S21
UPC: 00707773062739
Weight: 1 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Get the ACDelco 12S21 Engine Coolant Thermostat Seal for your 2004 Chevrolet S10. Buy now and secure your purchase online!

An ACDelco Professional, premium aftermarket Engine Coolant Thermostat Seal is the high quality replacement ideal for many vehicles on the road today. It seals the thermostat housing and helps prevent coolant from leaking from the engine. This premium aftermarket replacement engine coolant thermostat seal is manufactured to meet your expectations for fit, form, and function.

ACDelco has a full line of high-quality thermostats and caps for nearly all GM vehicles on the road today. Through our GM Original Equipment and Professional, premium aftermarket product lines, our thermostats cover a wide range of designs and temperature ratings to meet your needs. We also offer GM OE and Professional, premium aftermarket fuel caps, radiator caps, and oil filler/breather caps to replace your worn GM Original Equipment.

ACDelco Professional, premium aftermarket Thermostats and Caps offer you an ideal replacement for your worn GM Original Equipment part. Engineered to work with your car, truck, or SUV, ACDelco has a thermostat or cap for virtually any GM vehicle on the road today. ACDelco Professional, premium aftermarket Thermostats and Caps give you our legendary quality at a competitive price.

Features and Benefits:

  • Manufactured to meet expectations for fit, form, and function
  • Professional, premium aftermarket replacement engine coolant thermostat
  • Provides the performance and dependability you expect from ACDelco
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Maintain proper coolant levels and check level monthly (Note: Never attempt to remove a radiator cap while the engine is hot. Serious injury could result).
  • – Evaluate radiator and radiator cap for leaks, corrosion, or a worn cap gasket.
  • – Examine hoses every 12 months. Look for leaks, cracks or rot. Replace when showing signs of wear.
  • – Have cooling system inspected immediately if instrument panel-mounted temperature gauge indicates engine overheating.
  • – Inspect engine belts for cracks or missing sections; check belt tension.
  • – Periodically, remove bugs, leaves and other debris from the front of the radiator. They can block airflow and substantially reduce cooling efficiency.
  • – Replace coolant with a mixture of antifreeze and water according to the vehicle manufacturer's recommendations.
  • – Tighten any loose clamps. Always replace clamps when replacing hoses.

Specifications:

Inside Diameter:
1.969 in.
Inside Diameter:
50.00 mm
Material:
Rubber
Outside Diameter:
2.323 in.
Outside Diameter:
59.00 mm
Seal Type:
Gasket O Ring
Thickness:
0.146 in.
Thickness:
3.700 mm

Manufacturer Warranty:

24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details.

ACDelco 12S21 Engine Coolant Thermostat Seal compatibility with your 2004 Chevrolet S10...

Last Updated: 09/11/2021

Years Vehicle Per Vehicle Fit NotesFitment Notes

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 
Chevrolet S10

4.3L V6 Gas OHV
1
 
Professional
Includes Multiple Pack
 

Chevrolet S10



4.3L V6 Gas OHV Professional
Includes Multiple Pack

1 Per Vehicle

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