Kooks BK110 Stainless Steel Header Bolt Kit for GM LS Engines 12-Piece M8

Regular price: $70.95
Regular price: ~~$65.05~~
Sale price: $70.95

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In Stock: 8

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Product Specification:

SKU:KSHBK110

Weight: 0.7 lb

Inventory: 8

Type: Bolts

Vehicle Fitment

Universal - Fits all GM LS-series engines (LS1, LS2, LS3, LS6, LS7, LS9, LSA, LT1, and variants) using Kooks long tube headers with stock M8 x 1.25mm bolt pattern

Fitment Notes

Intended as a replacement kit for lost or damaged bolts included with Kooks header purchases
Does not include locking hardware - not required per Kooks engineering specifications
Verify bolt pattern compatibility before ordering for non-Kooks header applications

Features

Certified Kooks-quality stainless steel construction for long-term corrosion resistance
Engineered to withstand high exhaust heat cycles without stretching or failing
M8 x 1.25mm thread pitch matches GM LS stock cylinder head bolt pattern precisely
25mm bolt length optimized for proper flange seating depth on Kooks headers
Manufactured in the USA to Kooks' ISO 9001:2015 certified quality standards
Reusable and serviceable - ideal for header removals and reinstalls
Compatible with Kooks headers across all LS-platform vehicles and LS swap builds
Sold as a complete 12-bolt set to cover both cylinder heads in one purchase

Specifications

Thread Size: M8 x 1.25mm
Bolt Length: 25mm
Quantity: 12 bolts
Material: Stainless Steel
Application: GM LS-series engine header-to-cylinder-head mounting
Locking Hardware: Not included (not required)

Included Components

12x M8 x 1.25 x 25mm Stainless Steel Header Bolts

Product Description

The Kooks BK110 is a certified replacement header bolt kit designed specifically for GM LS-series engines. Built from stainless steel, these bolts provide reliable clamping force at the header flange-to-cylinder head interface and are engineered to handle the thermal stress of repeated heat cycling. This kit covers both cylinder heads with 12 bolts total, using the factory M8 x 1.25mm thread pitch found across the full GM LS engine family.

This bolt kit ships standard with most Kooks header purchases and should only be ordered separately as a replacement for lost or damaged hardware. Whether you're performing a header install, an LS swap, or swapping out headers between builds, the BK110 ensures you always have the correct OEM-spec fasteners on hand - built to the same quality standards as every Kooks product made in Statesville, NC.