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Kooks /
Exhaust Clamps and Hardware
Kooks GM LS Header Bolt Kit, M8 x 1.25 - BK110
Check vehicle fitment
£61.58
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 | BK110 |
| Application | Listed GM LS header applications |
| Material | Stainless steel |
| Thread | M8 x 1.25 |
| Length | 25 mm bolt length |
| Quantity | Twelve bolts per kit |
The right replacement hardware for your LS headers
The Kooks BK110 supplies twelve stainless header bolts for the listed GM LS application. With M8 x 1.25 threads and 25 mm length, it gives you a defined replacement specification for missing or damaged fitting hardware.
SKU: BK110
Match the installation
Check the actual cylinder-head thread and header fitting requirements before replacing hardware. Follow the application instructions for tightening and check the fasteners after the first heat cycle.
Buy it when replacement bolts are needed
Kooks header packages generally include header bolts. This kit gives you a replacement set for the matched LS installation rather than a compulsory extra with every new header purchase.
Vehicle fitment
| Years | Vehicle and trim | Engine | Applicable SKU / fitting conditions |
|---|---|---|---|
| 2018 | Jeep Wrangler JK | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 2007-2017 | Jeep Wrangler | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1970-1972 | Buick GS | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1968-1969 | Buick GS 350 | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1968-1969 | Buick GS 400 | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1970-1972 | Buick GS 455 | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1973-1974 | Buick Apollo | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1968-1972 | Buick Skylark | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1968-1972 | Buick Sportwagon | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 2003-2006 | Cadillac Escalade ESV Base | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2014 | Cadillac Escalade ESV Base | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2008-2014 | Cadillac Escalade ESV Platinum | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2011-2014 | Cadillac Escalade ESV Premium | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2011-2014 | Cadillac Escalade ESV Luxury | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2006 | Cadillac Escalade EXT Base | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2013 | Cadillac Escalade EXT Base | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2011-2013 | Cadillac Escalade EXT Luxury | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2011-2013 | Cadillac Escalade EXT Premium | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2009-2015 | Cadillac CTS V | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2006 | Cadillac Escalade Base | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2005 | Cadillac Escalade Base | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2014 | Cadillac Escalade Base | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2008-2014 | Cadillac Escalade Platinum | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2011-2014 | Cadillac Escalade Luxury | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2011-2014 | Cadillac Escalade Premium | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1968 | Chevrolet Chevy II Nova | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 2014-2017 | Chevrolet SS Base | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1968-1972 | Chevrolet Chevelle | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1967-1981 | Chevrolet Camaro | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1998-2002 | Chevrolet Camaro Z28 SS | 5.7L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1998-2002 | Chevrolet Camaro Z28 | 5.7L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2010-2015 | Chevrolet Camaro SS | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2011-2012 | Chevrolet Camaro 2SS | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2011-2012 | Chevrolet Camaro 1SS | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2012-2015 | Chevrolet Camaro ZL1 | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2014-2015 | Chevrolet Camaro Z/28 | 7.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2011-2017 | Chevrolet Caprice PPV | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1997-2004 | Chevrolet Corvette Base | 5.7L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1998 | Chevrolet Corvette Indianapolis 500 Pace Car | 5.7L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2001-2004 | Chevrolet Corvette Z06 | 5.7L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2003 | Chevrolet Corvette 50th Anniversary Edition | 5.7L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2005-2007 | Chevrolet Corvette Base | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2006-2013 | Chevrolet Corvette Z06 | 7.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2008-2013 | Chevrolet Corvette Base | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2009-2013 | Chevrolet Corvette ZR1 | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2010-2013 | Chevrolet Corvette Grand Sport | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1968-1972 | Chevrolet El Camino | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1969-1974 | Chevrolet Nova | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1999-2013 | Chevrolet Silverado 1500 LT | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2013 | Chevrolet Silverado 1500 LS | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2013 | Chevrolet Silverado 1500 LT | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2013 | Chevrolet Silverado 1500 LS | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2005 | Chevrolet Silverado 1500 Base | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2005 | Chevrolet Silverado 1500 Base | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2013 | Chevrolet Silverado 1500 WT | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2013 | Chevrolet Silverado 1500 WT | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2003-2006 | Chevrolet Silverado 1500 SS | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2004-2009 | Chevrolet Silverado 1500 LT | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2004-2005 | Chevrolet Silverado 1500 LS | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2004 | Chevrolet Silverado 1500 | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2004 | Chevrolet Silverado 1500 | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2013 | Chevrolet Silverado 1500 LTZ | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2009 | Chevrolet Silverado 1500 LTZ | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2009-2013 | Chevrolet Silverado 1500 LTZ | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2010-2013 | Chevrolet Silverado 1500 XFE | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2010-2013 | Chevrolet Silverado 1500 LT | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2014 | Chevrolet Suburban 1500 LT | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2014 | Chevrolet Suburban 1500 LS | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2006 | Chevrolet Suburban 1500 Base | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2004-2006 | Chevrolet Suburban 1500 Z71 | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2006-2009 | Chevrolet Suburban 1500 LTZ | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2014 | Chevrolet Suburban 1500 LTZ | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2009 | Chevrolet Suburban 1500 LT | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2014 | Chevrolet Tahoe LS | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2014 | Chevrolet Tahoe LT | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2009 | Chevrolet Tahoe LS | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2004 | Chevrolet Tahoe LT | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2006 | Chevrolet Tahoe Base | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2006 | Chevrolet Tahoe Base | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2003-2006 | Chevrolet Tahoe Z71 | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2003-2004 | Chevrolet Tahoe Z71 | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2014 | Chevrolet Tahoe LTZ | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2008-2009 | Chevrolet Tahoe LTZ | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2012-2014 | Chevrolet Tahoe PPV | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2013 | GMC Sierra 1500 SLE | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2013 | GMC Sierra 1500 SLT | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2013 | GMC Sierra 1500 SLE | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2004 | GMC Sierra 1500 SLT | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2013 | GMC Sierra 1500 SL | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1999-2013 | GMC Sierra 1500 SL | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2001 | GMC Sierra 1500 C3 | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2013 | GMC Sierra 1500 WT | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2013 | GMC Sierra 1500 WT | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2006 | GMC Sierra 1500 Denali | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2005 | GMC Sierra 1500 Base | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002-2005 | GMC Sierra 1500 Base | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002 | GMC Sierra 1500 HT | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2002 | GMC Sierra 1500 HT | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2004-2009 | GMC Sierra 1500 SLE | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2004-2009 | GMC Sierra 1500 SLT | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2004 | GMC Sierra 1500 Base | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2004 | GMC Sierra 1500 WT | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2013 | GMC Sierra 1500 Denali | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2009-2013 | GMC Sierra 1500 SLT | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2010-2013 | GMC Sierra 1500 XFE | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2010-2013 | GMC Sierra 1500 SLE | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1971-1977 | GMC Sprint | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 2000-2014 | GMC Yukon SLE | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2014 | GMC Yukon SLT | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2009 | GMC Yukon SLE | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2005 | GMC Yukon SLT | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2001-2006 | GMC Yukon Denali | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2006 | GMC Yukon SL | 4.8L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2006 | GMC Yukon SL | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2014 | GMC Yukon Denali | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2014 | GMC Yukon XL 1500 SLE | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2000-2014 | GMC Yukon XL 1500 SLT | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2001-2006 | GMC Yukon XL 1500 Denali | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2006 | GMC Yukon XL 1500 SL | 5.3L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2014 | GMC Yukon XL 1500 Denali | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2009 | GMC Yukon XL 1500 SLT | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2007-2009 | GMC Yukon XL 1500 SLE | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2010-2014 | GMC Yukon XL 1500 SLT | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1968-1971 | Oldsmobile 442 | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1968-1972 | Oldsmobile Cutlass | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1973-1974 | Oldsmobile Omega | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1968-1972 | Oldsmobile Vista Cruiser | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1968-1972 | Pontiac GTO | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 2004 | Pontiac GTO Base | 5.7L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2005-2006 | Pontiac GTO Base | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1969-1981 | Pontiac Firebird | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1998-2002 | Pontiac Firebird Trans Am | 5.7L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1998-2002 | Pontiac Firebird Formula | 5.7L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1968-1972 | Pontiac LeMans | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 1971-1974 | Pontiac Ventura | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
| 2008-2009 | Pontiac G8 GT | 6.0L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 2009 | Pontiac G8 GXP | 6.2L V8 | BK110. GM LS engine required; M8 x 1.25 header threads |
| 1968-1970 | Pontiac Tempest | GM LS engine conversion | BK110. Engine-swapped application only; match the installed Gen III/IV LS cylinder heads |
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
How many bolts are supplied?
Twelve stainless header bolts.
What is the exact thread?
M8 x 1.25, with 25 mm bolt length.
Should I buy it with every header kit?
Use it when replacement hardware is needed. Kooks header packages generally include their fitting 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.
