ACDelco® 12556370 - GM Original Equipment™ Timing Cover Gasket

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Product Details

GM Original Equipment™ Timing Cover Gasket (12556370) by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards.


Configuration: One Piece
Spring Tension: Yes
Gasket Face Width (in): 0.157
Gasket Face Width (mm): 4 mm
Crankshaft Seal": No
Gasket Material: Silicone Rubber
Gasket Thickness (in): 0.293"
Gasket Thickness (mm): 7.450 mm
Overall Width (in): 7.80
Overall Width (mm): 198.3 mm


  • OE quality parts from top original equipment and aftermarket manufacturers
  • The finest quality at a great price
  • ACDelco carries everything needed to complete the job
  • Order from the comfort of your home or office

ACDelco®, a brand of GM Customer Care and Aftersales, is a global automotive manufacturer of premium replacement parts for almost all vehicle systems as well as off-road, industrial, and marine equipment. With more than hundred years of manufacturing experience, the company offers an extensive line of brake pads and rotors, belts and hoses, shocks and struts, alternators and starters, thermostats and caps, fuel pumps, and many more trustworthy and top-quality products.

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Warranty Information

This limited warranty is extended only to the original purchaser of ACDelco products and services from a member of the ACDelco Service Center Program. This limited warranty is made by the Independent Repair Facility ("Facility") who is so named on the original repair invoice and performed the service/repairs on your vehicle using ACDelco automotive parts. This warranty may be honored by other Facilities participating in this program, or other authorized non-participating facilities anywhere in the United States.

The Independent Repair Facility warrants that the above repairs and services performed at their location will be free from defects in materials and workmanship for 24 months or 24,000 miles of use, whichever comes first, measured from the date of the first repair and the odometer reading shown on the original repair invoice. The warranty term depends on the product. This warranty is conditioned on the vehicle being subjected only to normal, non-commercial use, and receiving reasonable and necessary maintenance during the warranty period. Warranty repair costs shall in no case exceed the costs of the original repair or service.

What Is not Covered by This Warranty

You must pay for any non-warranty service you order to be performed at the same time as any warranty service. This warranty will not apply to your repaired vehicle if it has been damaged by abnormal use, misuse, neglect, accident, alteration or "tampering with" (by other than the Facility or Facility employees). The Facilities employees and/or agents do not have authority to modify the terms of this warranty, nor to make any promises in addition to those contained within this warranty. This warranty does not in any way include incidental or consequential damages (additional expenses which you may incur as the result of faulty repair or service). Some states do not allow the exclusion or limitation of incidental or consequential damage, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state.

This warranty does not cover repair(s) or service(s) except as listed in the section, "What is Covered by this Warranty," even though the Facility may offer other services. Specifically excluded are any battery, engine, transmission, clutch, or differential repairs, associated gaskets and seals, or assembly replacement of the same. Also excluded are auto body, paint, molding, glass repairs, tires, and used parts. Commercial vehicles are excluded.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

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2004 Chevy Avalanche
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2003 Chevy Avalanche
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2002 Chevy Avalanche
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2001 Chevy C3500HD
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2002 Chevy Express
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2001 Chevy Express
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Chevy Silverado 2500
2007 Chevy Silverado 2500
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2006 Chevy Silverado 2500 HD
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2005 Chevy Silverado 2500 HD
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2004 Chevy Silverado 2500 HD
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2003 Chevy Silverado 2500 HD
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2002 Chevy Silverado 2500 HD
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2001 Chevy Silverado 2500 HD
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Chevy Silverado 3500
2007 Chevy Silverado 3500
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2006 Chevy Silverado 3500
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2005 Chevy Silverado 3500
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2004 Chevy Silverado 3500
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2003 Chevy Silverado 3500
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2002 Chevy Silverado 3500
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2001 Chevy Silverado 3500
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Chevy Suburban
2006 Chevy Suburban
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2005 Chevy Suburban
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2004 Chevy Suburban
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2003 Chevy Suburban
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2002 Chevy Suburban
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2001 Chevy Suburban
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GMC CK Pickup
2002 GMC CK Pickup
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2001 GMC CK Pickup
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GMC Savana
2002 GMC Savana
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2001 GMC Savana
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GMC Sierra 2500
2007 GMC Sierra 2500
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2006 GMC Sierra 2500
  • 8.1L
2005 GMC Sierra 2500
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2004 GMC Sierra 2500 HD
  • 8.1L
2003 GMC Sierra 2500 HD
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2002 GMC Sierra 2500 HD
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2001 GMC Sierra 2500 HD
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GMC Sierra 3500
2007 GMC Sierra 3500
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2006 GMC Sierra 3500
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2005 GMC Sierra 3500
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2004 GMC Sierra 3500
  • 8.1L
2003 GMC Sierra 3500
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2002 GMC Sierra 3500
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2001 GMC Sierra 3500
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GMC Yukon
2006 GMC Yukon XL
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2005 GMC Yukon XL
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2004 GMC Yukon XL
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2003 GMC Yukon XL
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2002 GMC Yukon XL
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Low Prices Price match guarantee
In-House Experts We know our products
Guaranteed Fitment Always the correct part
Easy Returns Quick & Hassle Free

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