Know the landed cost before you order
Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.
Kooks /
Exhaust Clamps and Hardware
Kooks Ford 5.0 / 6.2 Header Bolt Kit, M10 x 1.25 - BK109
Check vehicle fitment
£73.89
Available to Order
Not sure which one? Ask us to confirm fitment first →Delivery, customs and taxes Know the landed cost before you order
Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.
Lead times and urgent orders Check timing before you commit
Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.
Fitment checked before you order
Send the vehicle, engine and current setup if you want us to confirm the exact application before checkout.
Technical specifications
| Specification | Details |
|---|---|
| SKU | BK109 |
| Application | Listed Ford 5.0 / 6.2 header applications |
| Material | Stainless steel |
| Thread | M10 x 1.25 fine thread |
| Length | 25 mm bolt length |
| Quantity | Sixteen bolts per kit |
Get your header installation back together with the right bolts
Missing or damaged hardware should not leave you guessing at thread pitch. The Kooks BK109 supplies sixteen stainless header bolts for the listed Ford 5.0 and 6.2 applications, with M10 x 1.25 fine threads and 25 mm length. Match that specification to the actual cylinder-head threads and header installation.
SKU: BK109
Thread pitch matters
M10 describes the thread diameter; 1.25 is the fine-thread pitch. This is different from the M10 x 1.50 coarse-thread kit. Use the actual engine and fastener specification when choosing replacement hardware.
Useful replacement hardware
Kooks header packages generally include their header bolts. This kit is useful when hardware is lost or damaged, or for a matched replacement installation. Follow the fitting instructions for tightening and the first heat-cycle check.
Vehicle fitment
| Years | Vehicle and trim | Engine | Applicable SKU / fitting conditions |
|---|---|---|---|
| 2010-2014 | Ford F-150 SVT Raptor | 6.2L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2015-2020 | Ford F-150 XLT | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2015-2020 | Ford F-150 XL | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2015-2020 | Ford F-150 Lariat | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2015-2020 | Ford F-150 King Ranch | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2015-2020 | Ford F-150 Platinum | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2015-2021 | Ford Mustang GT | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2015-2021 | Ford Mustang GT Premium | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2015 | Ford Mustang GT 50 Years Limited Edition | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2021-2023 | Ford Mustang Mach 1 | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
| 2019-2020 | Ford Mustang Bullitt | 5.0L V8 | BK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread |
Ordering and delivery
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
Check timing before you commit
Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.
Questions before you order
Frequently asked questions
Is this the same thread as BK112?
No. BK109 uses M10 x 1.25 fine threads; BK112 uses M10 x 1.50 coarse threads.
Do I need it with every new Kooks header kit?
Header packages generally include their fitting bolts. This replacement kit is useful for missing or damaged hardware.
How many bolts are supplied?
Sixteen stainless header bolts.
Fitment first
Check fit before you order
Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.
Check vehicle fitment
Need help with this product?
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.
