Vortec/Small Block Chevy Cast Aluminum Timing Chain Cover w/Crank Sensor provision - Natural Finish
These cast aluminum covers feature timing indicators molded into the body and are available with or without a crank sensor provision to accommodate both carbureted and EFI applications. The covers are available in two finishes, Natural Cast and Satin Black. They are packaged with a high quality gasket and E-coated mounting hardware for added corrosion resistance
  • Designed as an upgrade from the plastic OEM timing chain covers on 1996-up Vortec Small Block Chevy engines - Replaces GM part numbers 10244600, 12523972, 12523973, 12558343, 12562818, & 93800970
  • Excellent upgrade for Chevrolet Performance crate engines that use the plastic timing chain cover
  • Available for EFI (with crank sensor provisions) and carbureted applications (without crank sensor provision)
  • Includes over-molded FKM oil seal, virtually eliminating concerns of the seal spinning out at high temperatures, which is common with other aluminum timing covers
  • Timing indicator cast into the cover – Intended for use with 8” Vortec balancers and other popular 8” aftermarket balancers
  • Accommodates both stock and aftermarket water pumps
  • Includes high quality gasket, corrosion resistant E-coated hardware, and dowel pins
  • Offered in Natural Cast and Satin Black finishes

Information:

Note:- Fits both Small Block Chevy (SBC) & VORTEC series Small Block Chevy applications- Mounting holes at the 10 o'clock and 2 o'clock positions are NOT used on VORTEC series engine fitments- Supplied Dowel pins are used on VORTEC series engines fitments ONLY, early Small Block Chevy (SBC) have dowel pins installed in the block and will not be used.

Application Summary:

Year Make/Model
2002-2006 Cadillac Escalade
2003-2006 Cadillac Escalade ESV
2002-2006 Cadillac Escalade EXT
2002-2006 Chevrolet Avalanche 1500
2003-2007 Chevrolet Express 1500
2003-2007 Chevrolet Express 2500
2005-2007 Chevrolet Express 3500
1999-2006 Chevrolet Silverado 1500
2007 Chevrolet Silverado 1500 Classic
1999-2000 Chevrolet Silverado 2500
2000-2006 Chevrolet Suburban 1500
2000-2006 Chevrolet Tahoe
2003-2007 GMC Savana 1500
2003-2007 GMC Savana 2500
2004-2007 GMC Savana 3500
1999-2006 GMC Sierra 1500
2007 GMC Sierra 1500 Classic
1999-2000 GMC Sierra 2500
2000-2006 GMC Yukon
2000-2006 GMC Yukon XL 1500
Attributes
Application Small Block Chevy, Small Block Chevy
Brand Holley, Holley
California Proposition 65 No
Category Engine Accessories, Engine
Category Filter Engine Accessories
Clearance Category Engine Accessories
Color Gray
Country of Origin (Primary) CN
Crank Sensor Provision Yes, Yes
Emission Code 5, 5
Engine Chevrolet VORTEC V8, Chevrolet VORTEC V8
Engine Make/Size Chevrolet VORTEC V8
Finish Natural, Natural
GTIN 00090127018507
Gasket Or Seal Included Yes, Yes
Gaskets Included Yes, Yes
Grade Type Performance
Harmonized Tariff Code (Schedule B) 8483901050
Hazardous Material Code N
Life Cycle Status Code Available to Order
Material Aluminum, Aluminum
Mounting Hardware Included Yes, Yes
Mounting Hole Quantity 10
NAFTA Preference Criterion Code B
Product Type Timing Chain Cover, Timing Chain Cover
SDR Required Flag N
Sale Category Engine
Sub Category Valve Train Components
Thickness Standard OEM, Standard OEM
Warranty Limited 90 Day, Manufacturer's Limited 90 Day Warranty
part type Engine Timing Cover

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Holley 21-152 Holley Cast Aluminum Timing Chain Cover

Product Information

  • Brand: Holley
  • Product Number: 21-152

Vehicle Fitment