Kooks GM GEN V Stainless Header Bolt Kit
Kooks / Exhaust Clamps and Hardware

Kooks GM Gen V Stainless Header Bolt Kit | BK113

Check vehicle fitment
£55.44 VAT included. Shipping calculated for your destination.

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.

Ask us to check fitment →
Technical specifications
Specification Details
SKU BK113
Engine application GM Gen V
Material Stainless steel
Included bolts 10 bolts
Thread size / pitch M8 x 1.25
Bolt length 25 mm
Purchase purpose Replacement kit; most Kooks header kits already include bolts
Locking hardware No separate locking hardware supplied

Replace your header hardware with the correct kit

Have the correct replacement fasteners ready when your headers are being serviced. This Kooks kit supplies 10 bolts in stainless steel, with M8 x 1.25 threads and 25 mm bolt length, for GM Gen V.

SKU: BK113

For a repair or refit

Most Kooks header kits already include the installation bolts. This separate kit is useful when replacing damaged or lost hardware during a refit.

Match the header and cylinder head

Use the M8 x 1.25 thread and 25 mm length to match the intended head and header application. The kit contains 10 bolts, without separate locking hardware.

Vehicle fitment

Years Vehicle / trim Engine Applicable SKU Fitting conditions
2015-2020 Cadillac Escalade ESV Premium 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Cadillac Escalade ESV Luxury 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Cadillac Escalade ESV Base 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Cadillac Escalade ESV Platinum 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2017-2020 Cadillac Escalade ESV Premium Luxury 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2016-2019 Cadillac CTS V 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Cadillac Escalade Platinum 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Cadillac Escalade Luxury 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Cadillac Escalade Base 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2017 Cadillac Escalade Premium 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2017-2020 Cadillac Escalade Premium Luxury 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Chevrolet Suburban LS 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Chevrolet Suburban LT 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2016 Chevrolet Suburban LTZ 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2017-2020 Chevrolet Suburban Premier 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019-2020 Chevrolet Suburban Premier 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2016-2020 Chevrolet Camaro SS 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2017-2020 Chevrolet Camaro ZL1 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2019 Chevrolet Corvette Stingray 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2016 Chevrolet Corvette Z51 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2019 Chevrolet Corvette Z06 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2017-2019 Chevrolet Corvette Grand Sport 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019 Chevrolet Corvette ZR1 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 Chevrolet Silverado 1500 LTZ 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 Chevrolet Silverado 1500 LTZ 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 Chevrolet Silverado 1500 LT 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 Chevrolet Silverado 1500 High Country 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 Chevrolet Silverado 1500 WT 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 Chevrolet Silverado 1500 High Country 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2018 Chevrolet Silverado 1500 LS 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2016-2020 Chevrolet Silverado 1500 Custom 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019-2020 Chevrolet Silverado 1500 RST 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019-2020 Chevrolet Silverado 1500 LT Trail Boss 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019-2020 Chevrolet Silverado 1500 Custom Trail Boss 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Chevrolet Tahoe LS 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 Chevrolet Tahoe LT 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2016 Chevrolet Tahoe LTZ 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2016-2017 Chevrolet Tahoe Z71 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2017-2020 Chevrolet Tahoe Premier 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2018-2020 Chevrolet Tahoe Premier 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2018 Chevrolet Tahoe Midnight Edition 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 GMC Yukon XL SLT 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 GMC Yukon XL Denali 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 GMC Yukon XL SLE 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019-2020 GMC Yukon XL SLT 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 GMC Sierra 1500 Denali 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 GMC Sierra 1500 SLT 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 GMC Sierra 1500 Base 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2014-2020 GMC Sierra 1500 Denali 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019-2020 GMC Sierra 1500 AT4 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019-2020 GMC Sierra 1500 AT4 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019-2020 GMC Sierra 1500 Elevation 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 GMC Yukon Denali 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 GMC Yukon SLE 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2015-2020 GMC Yukon SLT 5.3L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts
2019-2020 GMC Yukon SLT 6.2L V8 BK113 GM Gen V head and header combination; M8 x 1.25, 25 mm bolts

Ordering and delivery

Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.

Technical specifications

Specification Details
SKU BK113
Engine application GM Gen V
Material Stainless steel
Included bolts 10 bolts
Thread size / pitch M8 x 1.25
Bolt length 25 mm
Purchase purpose Replacement kit; most Kooks header kits already include bolts
Locking hardware No separate locking hardware supplied

Frequently asked questions

Do I need to add these to a new header kit?

Most Kooks header kits include installation bolts. This listing is a replacement kit.

What size are the bolts?

M8 x 1.25 thread, 25 mm long.

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 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.

Contact us
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Kooks GM Gen V Stainless Header Bolt Kit | BK113
Kooks GM Gen V Stainless Header Bolt Kit | BK113
Available to Order £55.44