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Holley 21-150 Cast Aluminum Timing Chain Cover

5.0 (1) Write Review
Free shipping on orders over $29.99

$69.80

$ 28 .99 $28.99

In Stock
  • 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


Holley 21-150 Holley Cast Aluminum Timing Chain Cover


Kindle Customer
Reviewed in the United States on March 11, 2025
Only reason I'm giving 3 stars and not 5 is the fact that I had to drill out the crank position sensor port and tap the bolt that holds it down. Not super happy with that but turned out ok.