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  5. Engine Coolant Thermostat
  6. ACDelco 12T55D for 2004

ACDelco 12T55D Engine Coolant Thermostat
for 2004 (please select make/model)

ACDelco 12T55D Engine Coolant Thermostat - 2004

ACDelco
Brand:ACDelco
Part Number: 12T55D
UPC: 00707773320006
Weight: 0.18 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Get the ACDelco 12T55D Engine Coolant Thermostat for your 2004. Buy now and secure your purchase online!

ACDelco Professional Engine Coolant Thermostats control the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature, and are a high quality replacement for many vehicles on the road today. These engine coolant thermostats are manufactured to meet your expectations for fit, form, and function. WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • Controls the flow of coolant through the radiator to help your vehicle's engine reach and maintain its optimal operating temperature
  • Manufactured to meet expectations for fit, form, and function
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • – Have cooling system inspected immediately if instrument panel-mounted temperature gauge indicates engine overheating

Specifications:

Height:
2.4 in.
Length:
2.4 in.
Programming Required:
NO
Seal Type:
Gasket
Weight:
.18 lb
Width:
2.4 in.

Manufacturer Warranty:

24 Months/Unlimited Miles Warranty (Parts Only). Please see ACDelco.com for more details

Select a vehicle to narrow ACDelco 12T55D Engine Coolant Thermostat fitment info!

Last Updated: 02/25/2022

Years Vehicle Per Vehicle Fit NotesFitment Notes

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 
Buick Century

3.1L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Buick Century



3.1L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2005

 

2004

 

2003

 

2002

 
Buick Rendezvous

3.4L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Buick Rendezvous



3.4L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2006

 

2005

 

2004

 

2003

 

2002

 
Chevrolet Avalanche 2500

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Chevrolet Avalanche 2500



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 
Chevrolet Impala

3.4L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Chevrolet Impala



3.4L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2006

 

2005

 

2004

 

2006

 

2005

 

2004

 
Chevrolet Malibu

3.5L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Chevrolet Malibu



3.5L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 
Chevrolet Monte Carlo

3.4L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Chevrolet Monte Carlo



3.4L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
Chevrolet Silverado 2500 HD

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Chevrolet Silverado 2500 HD



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
Chevrolet Silverado 3500

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Chevrolet Silverado 3500



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
Chevrolet Suburban 2500

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Chevrolet Suburban 2500



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 
Chevrolet Venture

3.4L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Chevrolet Venture



3.4L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 
GMC C4500 Topkick

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

GMC C4500 Topkick



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 
GMC C5500 Topkick

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

GMC C5500 Topkick



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
GMC C6500 Topkick

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

GMC C6500 Topkick



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
GMC C7500 Topkick

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

GMC C7500 Topkick



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 
GMC C8500 Topkick

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

GMC C8500 Topkick



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
GMC Sierra 2500 HD

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

GMC Sierra 2500 HD



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
GMC Sierra 3500

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

GMC Sierra 3500



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
GMC Yukon XL 2500

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

GMC Yukon XL 2500



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 
Oldsmobile Alero

3.4L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Oldsmobile Alero



3.4L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 
Oldsmobile Silhouette

3.4L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Oldsmobile Silhouette



3.4L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2001

 

2005

 

2004

 

2003

 

2002

 

2001

 
Pontiac Aztek

3.4L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Pontiac Aztek



3.4L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 
Pontiac Grand Am

3.4L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Pontiac Grand Am



3.4L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 
Pontiac Montana

3.4L V6 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Pontiac Montana



3.4L V6 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2001

 

2005

 

2004

 

2003

 

2002

 

2001

 
Workhorse P32

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Workhorse P32



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 
Workhorse P42

7.4L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Workhorse P42



7.4L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
Workhorse W20

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Workhorse W20



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
Workhorse W22

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Workhorse W22



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 
Workhorse W24

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Workhorse W24



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
Workhorse Custom Chassis P32

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Workhorse Custom Chassis P32



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2009

 

2008

 

2007

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
Workhorse Custom Chassis W22

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Workhorse Custom Chassis W22



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2005

 

2004

 
Workhorse Custom Chassis W24

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Workhorse Custom Chassis W24



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2005

 

2004

 

2003

 

2002

 
Workhorse Custom Chassis W52

8.1L V8 Gas OHV
1
 
Professional
Temperature 180F
Standard
Includes seal
Alternate Temp
 

Workhorse Custom Chassis W52



8.1L V8 Gas OHV Professional
Temperature 180F
Standard
Includes seal
Alternate Temp

1 Per Vehicle

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