Pro Series 04-20 LS Cylinder Head Hex Bolt Kit

• Fits 2004-2020 LS Applications: Designed for Gen III/IV LS cylinder head installations.

• 190,000 PSI Tensile Strength: Heat-treated 35 chromoly steel construction.

• Hex Head Fastener Design: Provides secure installation and easy serviceability.

• Supports Reliable Head Gasket Sealing: Helps maintain consistent cylinder head clamping force.

Upgrade your LS engine build with the Top Street Performance Pro Series LS Cylinder Head Hex Bolt Kit. Designed for 2004-2020 GM Gen III and Gen IV LS applications, this LS cylinder head bolt kit provides the strength and clamping force needed to help maintain reliable head gasket sealing in street, performance, and racing engines. Whether you're assembling a fresh engine, replacing cylinder heads, or performing a rebuild, these LS head bolts provide dependable fastening performance.

Reliable Cylinder Head Clamping Force
Designed to securely fasten the cylinder heads to the engine block, this LS head bolt kit helps maintain consistent cylinder head clamping force and dependable head gasket retention. Ideal for engine rebuilds, cylinder head replacement, and performance engine assembly projects.

High-Strength Performance Construction
Manufactured from heat-treated 35 chromoly steel with a minimum tensile strength of 190,000 PSI, these LS cylinder head fasteners are built to withstand demanding engine conditions. Threads are rolled after heat treatment and protected with a black oxide finish and oil coating for enhanced durability and corrosion resistance.

Designed for 2004-2020 LS Applications
Engine-specific design provides compatibility with a wide range of Gen III and Gen IV LS engine combinations. These LS engine head bolts are ideal for stock replacement, engine rebuilds, cylinder head upgrades, and performance applications requiring reliable cylinder head hardware.

Ideal for Engine Rebuilds & Performance Builds
Perfect for cylinder head installation, head gasket replacement, engine assembly, and performance engine projects where fresh LS cylinder head hardware is recommended. A great choice for maintaining proper head gasket sealing and long-term engine reliability.

What does this cylinder head bolt kit fit?
Designed for compatible 2004-2020 GM Gen III and Gen IV LS cylinder head applications. Always verify cylinder head and block compatibility before ordering.

Why replace cylinder head bolts?
Replacing cylinder head hardware during engine assembly or head gasket service helps ensure proper clamping force and reliable sealing performance.

What is the benefit of high-strength head bolts?
High-strength fasteners help maintain cylinder head clamping force and support reliable head gasket sealing under demanding operating conditions.

Are these suitable for performance applications?
Yes. The bolts are manufactured from heat-treated 35 chromoly steel with a minimum tensile strength of 190,000 PSI for performance street and racing applications.

What material are the bolts made from?
The kit is manufactured from 35 chromoly steel with rolled threads, a black oxide finish, and protective oil coating.

What is the advantage of a hex head design?
The hex head design provides straightforward installation and serviceability using standard tools.

Can these be used during an engine rebuild?
Yes. This kit is ideal for engine rebuilds, cylinder head replacement, head gasket service, and performance engine assembly projects.

Do these fit Gen V LT engines?
No. This kit is designed for specified Gen III and Gen IV LS applications and is not compatible with Gen V LT engines.