Sierra Cylinder Head - 18-4504

0  Saves




Mfg 18-4504, iboats IB00260094, UPC 808282294946
Hurry! Only 1 left in stock
FREE SHIPPING on orders over $99 * Some exclusions.
Lowest Price? We offer a Price Match Guarantee.
Easy Returns. Manage your returns online.
$3,960.99 $2,400.96
Hurry! Only 1 left in stock
Questions? Talk to our In-House Experts.

Product description:

  • Aluminum cylinder heads sold in pairs only or 454 and 502 cu.In big-block GM applications.
  • Custom engraved with Sierra High-Performance logo
  • 320 cc intake runner/119cc exhaust runner
  • 2.25 intake/1.88 exhaust stainless steel valves
  • 5 angle valve seat cut
  • Up to 65HP increase over OE cylinder heads
  • Suitable for use on Mark IV, Gen V, and Gen VI GM blocks. Must use correct corresponding head gaskets
  • Std. BBC 7/16" rocker studs and 3/8" diameter pushrod guideplates
  • Rectangle intake ports
  • Use on factory non-adjustable valvetrain applications require adjustable rocker arm assemblies such as Sierra's 18-4507
  • Use Sierra 18-4506 guide plates to utilize factory 5/16" pushrods
See More

Product specifications:

  • Brand Sierra
  • Manufacturer Sku 18-4504
  • UPC 808282294946
  • Days to ship from warehouse - 1
See Less
This product fits:

We understand that sometimes a product you purchase just doesn't work out. We want to make the process as easy as possible for you. Please click on the links below for more information on our return policies and procedures.

General Return Policy

An item(s) may be returned within the first 30 days after the item(s) is shipped to you. Merchandise must be in new, unused condition with all original packaging in good condition; plus parts, accessories, manuals, and/or warranty cards included. You will need to receive a return authorization number (RA #) as well as instructions from our Customer Service Department.

Please start your return online to receive your RA #. Returned item(s) that do not have a RA # will not be accepted.

* Please note: does not accept any return merchandise on Canadian & International orders. See our Canada & International Return Policy

Warranty Policy

After 30 days of your purchase, the manufacture of the product(s) will need to be contacted for a warranty claim. If you need assistance finding the manufacturers number please contact our Customer Service Department.

Click here to read about products that differ from our General Return Policy

Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.

Click here to see our Standard Shipping Policy

Write Your Own Review

Customer Reviews

There are no reviews for this product. Sing in or register below to be the first to review this product.
Only registered users can write reviews. Please Sign in or create an account