Kooks BK109 Header Bolt Kit Stainless M10 Fine Thread for Ford 5.0L/6.2L

Vehicle Fitment

• 2015-2021 Ford Mustang GT (5.0L Coyote V8, RWD)
• 2019-2020 Ford Mustang Bullitt (5.0L Coyote V8, RWD)
• 2015-2020 Ford Mustang Shelby GT350/GT350R (5.2L Voodoo V8, RWD)
• 2021-2023 Ford Mustang GT (5.0L Coyote V8, RWD)
• 2015-2020 Ford F-150 (5.0L Coyote V8, various trims, RWD/4WD)
• 2010-2014 Ford F-150 SVT Raptor (5.0L/6.2L V8, RWD/4WD)

Features

• Replacement header bolt kit for fine-thread applications
• 16 high-quality stainless steel M10 x 1.25 x 25mm bolts
• Fine-thread design optimized for Ford modular V8 cylinder heads
• Secures headers to cylinder heads with proper clamping force
• Resistant to heat and corrosion for long-lasting performance
• Compatible with OEM and aftermarket Kooks headers
• Includes all bolts required for a complete header installation
• Ideal for maintenance, rebuilds, or lost/damaged hardware replacement

Specifications

• Material: 304 stainless steel
• Bolt size: M10 x 1.25 x 25mm
• Thread type: Fine-thread for modular V8 cylinder heads
• Quantity included: 16 bolts
• Use case: Replacement header hardware

Included Components

• 16x M10 x 1.25 x 25mm stainless steel header bolts

Product Description

The Kooks BK109 Header Bolt Kit is a precision replacement hardware set designed for Ford modular V8 engines, including 5.0L Coyote, 5.2L Voodoo, and 6.2L V8 applications. It provides 16 stainless steel M10 x 1.25 x 25mm fine-thread bolts engineered to securely clamp performance headers to the cylinder heads while resisting heat and corrosion.

This kit is compatible with both OEM and aftermarket Kooks headers and is essential for replacing lost or damaged hardware during installation or maintenance. Its fine-thread design ensures proper sealing and torque on the cylinder head ports, maintaining the integrity of the exhaust system. Perfect for Ford Mustang GT, Bullitt, Shelby GT350/GT350R, and F-150 owners performing performance upgrades or routine header service.