Katech LS Billet Steel Main Caps

Katech LS Billet Steel Main Caps For LS1/LS2/LS3/LS6/L92/LQ4/LQ9/LM7 Engines

Strengthen the foundation of your LS engine with Katech LS Billet Steel Main Caps. Precision-machined from billet steel, these main caps are designed to provide increased durability and positive cap location for high-performance street, racing, boosted, and nitrous-assisted LS engine builds.

Unlike factory LS main caps that rely on cast aluminum register walls, Katech LS Billet Steel Main Caps utilize dual 1/4-inch steel dowel pins to positively locate each cap within the block.

Key Features

• Precision-Machined Billet Steel Construction
• Dual 1/4-Inch Steel Dowel Pin Locating System
• Stronger than Factory Cast Aluminum Main Caps
• Designed to Help Maintain Main Cap Alignment Under High Engine Loads
• Ideal for Naturally Aspirated, Supercharged, Turbocharged, and Nitrous Applications
• Engineered And Machined By Katech Engineering In Clinton Township, Michigan, USA.

What's Included

• Complete Set Of Five Katech Billet Steel Main Caps
• Steel Dowel Pins

Recommended Components

For maximum clamping force and durability, Katech recommends pairing Katech LS Billet Steel Main Caps with the ARP LS Main Stud Kit.

Fitment

ompatible with GM LS1, LS2, LS3, LS6, L92, LQ4, LQ9, and LM7 engine blocks.

Important Installation Information

Block Machining Is Required. Installation requires machining the engine block for dowel pin installation. Professional machining and installation by a qualified engine builder is strongly recommended.

Why Upgrade To Billet Steel Main Caps?

Factory LS main caps rely on cast aluminum register walls for cap location. In demanding performance applications, maintaining precise cap alignment becomes increasingly important as cylinder pressure and engine loads rise.

Katech LS Billet Steel Main Caps combine billet steel construction with dual 1/4-inch steel dowel pins to positively locate each cap within the block. The result is a more robust foundation for naturally aspirated, supercharged, turbocharged, and nitrous-assisted LS engine builds.  

Why Choose Katech?

For decades, Katech has engineered championship-winning engines for endurance racing, professional motorsports, and high-performance street applications. That same engineering philosophy is applied to every component we produce.

Designed for serious engine builders, Katech LS Billet Steel Main Caps deliver precision machining, durable construction, and the quality expected from one of the most respected names in performance engine development.