Buy Now, Pay Later with 0% Financing!

Shop Specials & Save 5% at Instantly


This section doesn’t currently include any content. Add content to this section using the sidebar.

Image caption appears here

Add your deal, information or promotional text

Katech Performance


Katech Billet Steel Main Engine Caps | GM LS Engines (KAT-A4122)

Notify me when this product is available:

MAP price match guarantee

Katech Billet Steel Main Caps for LS Engines

Upgrade your block for maximum durabilty. Katech caps are positioned with two, 1/4-inch steel dowels rather than the OEM aluminum locating register walls.

Optional ARP main stud kit available. ARP main studs are manufactured from 8740 chrome moly steel, heat-treated to 200,000 psi tensile strength, and precision J-form threads rollad after heat-treat to create a fastener that has threads 1000% stronger than others. All kits come complete with hardened parallel-ground washers and aerospace quality nuts. Reduce crankshaft flex and main cap freeting with these premium quality main studs.


  • Increased durability for your block


  • LS1 / LS2 / LS3 / LS6 / L92 / LQ4 / LQ9 / LM7 engines

What's In The Box?

  • Main Caps


  • Manufacturer Standard Warranty