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Looking for aftermarket parts to modify or upgrade your GMC Sierra 2500 with headers & manifolds? At Tunersports.com we carry a huge selection of the top name brand performance headers & manifold parts and accessories.
 IN STOCK - LOW 48-44001The new Twisted Steel performance header from aFe Power is redefining the header industry with new pulse control technology. aFe engineers have designed this header using optimum tube lengths and mitered collectors for maximum flow and velocity for power delivery across the entire power band. Combin... aFe Power Twisted Steel Headers 409 Stainless Steel 02-13 GM Silverado/Sierra 1500 V8 GMT800/GMT900 2003-2004 GMC Sierra 2500 Base / SLE / SLT / WT $1,099.00 |
 OUT OF STOCK 4005These BBK Performance shorty tuned Length exhaust Headers are designed and constructed as direct fit replacements for all 99-04 GM Truck and SUV 4.8L and 5.3L applications. Each header is manufactured with 1-5/8" CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower ... BBK 99-04 GM Truck SUV 4.8 5.3 Shorty Tuned Length Exhaust Headers - 1-3/4 Titanium Ceramic 1999-2000 GMC Sierra 2500 SL / SLE / SLT $549.99 |
 IN STOCK 40050These BBK Performance shorty tuned Length exhaust Headers are designed and constructed as direct fit replacements for all 99-04 GM Truck and SUV 4.8L and 5.3L applications. Each header is manufactured with 1-5/8" CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower ... BBK 99-04 GM Truck SUV 4.8 5.3 Shorty Tuned Length Exhaust Headers - 1-3/4 Silver Ceramic 1999-2000 GMC Sierra 2500 SL / SLE / SLT $599.99 |
 IN STOCK - LOW 4006These BBK Performance shorty tuned Length exhaust Headers are designed and constructed as direct fit replacements for all 99-13 GM Truck and SUV 6.0L applications. Each header is manufactured with 1-5/8" CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower and torqu... BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Titanium Ceramic 1999-2002 GMC Sierra 2500 SL 1999-2004 GMC Sierra 2500 SLE / SLT 2002-2004 GMC Sierra 2500 Base 2003-2004 GMC Sierra 2500 WT $549.99 |
 IN STOCK - DROPSHIPS 40060These BBK Performance shorty tuned Length exhaust Headers are designed and constructed as direct fit replacements for all 99-13 GM Truck and SUV 6.0L applications. Each header is manufactured with 1-5/8" CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower and torqu... BBK 99-04 GM Truck SUV 6.0 Shorty Tuned Length Exhaust Headers - 1-3/4 Silver Ceramic 1999-2002 GMC Sierra 2500 SL 1999-2004 GMC Sierra 2500 SLE / SLT 2002-2004 GMC Sierra 2500 Base 2003-2004 GMC Sierra 2500 WT $599.99 |
 IN STOCK - LOW 1041400BD Diesel Exhaust Manifold Kit - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8 2003-2004 GMC Sierra 2500 Base / SLE / SLT / WT $593.95 |
 IN STOCK 1041401Experience unparalleled performance and durability with our enhanced GMC/Chevrolet truck exhaust manifolds, specifically designed for LS engines. Our BD-upgraded manifolds address common exhaust manifold bolt failures by incorporating extended fasteners and spacers that effectively withstand thermal... BD Diesel Passenger Side Exhaust Manifold - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8 2003-2004 GMC Sierra 2500 Base / SLE / SLT / WT $321.95 CLEARANCE VIEW PRICE IN CART |
 IN STOCK - LOW 1041402Experience unparalleled performance and durability with our enhanced GMC/Chevrolet truck exhaust manifolds, specifically designed for LS engines. Our BD-upgraded manifolds address common exhaust manifold bolt failures by incorporating extended fasteners and spacers that effectively withstand thermal... BD Diesel Driver Side Exhaust Manifold - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8 2003-2004 GMC Sierra 2500 Base / SLE / SLT / WT $321.95 CLEARANCE VIEW PRICE IN CART |
 SHIPS FROM MANUFACTURER GP115S-CEvery Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock ... Gibson 99-01 Chevrolet Silverado 1500 Base 4.8L 1-5/8in 16 Gauge Performance Header - Ceramic Coated 1999-2000 GMC Sierra 2500 SL / SLE / SLT $798.99 |
 SHIPS FROM MANUFACTURER GP116S-CEvery Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock ... Gibson 99-01 Chevrolet Silverado 1500 Base 4.8L 1-5/8in 16 Gauge Performance Header - Ceramic Coated 1999-2000 GMC Sierra 2500 SL / SLE / SLT $797.17 |
 SHIPS FROM MANUFACTURER GP119S-CEvery Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock ... Gibson 99-02 Chevrolet Silverado 2500 Base 6.0L 1-5/8in 16 Gauge Performance Header - Ceramic Coated 1999-2002 GMC Sierra 2500 SL / SLE / SLT 2002-2002 GMC Sierra 2500 Base $797.17 |
 IN STOCK - DROPSHIPS GP500S-CEvery Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock ... Gibson 02-06 Cadillac Escalade Base 6.0L 1-5/8in 16 Gauge Performance Header - Ceramic Coated 2002-2002 GMC Sierra 2500 SL 2002-2004 GMC Sierra 2500 Base / SLE / SLT 2003-2004 GMC Sierra 2500 WT $797.18 |
 SHIPS FROM MANUFACTURER GP115SEvery Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock ... Gibson 99-01 Chevrolet Silverado 1500 Base 4.8L 1-5/8in 16 Gauge Performance Header - Stainless 1999-2000 GMC Sierra 2500 SL / SLE / SLT $670.67 |
 SHIPS FROM MANUFACTURER GP119SEvery Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock ... Gibson 99-02 Chevrolet Silverado 2500 Base 6.0L 1-5/8in 16 Gauge Performance Header - Stainless 1999-2002 GMC Sierra 2500 SL / SLE / SLT 2002-2002 GMC Sierra 2500 Base $670.67 |
 IN STOCK GP500SEvery Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock ... Gibson 02-06 Cadillac Escalade Base 6.0L 1-5/8in 16 Gauge Performance Header - Stainless 2002-2002 GMC Sierra 2500 SL 2002-2004 GMC Sierra 2500 Base / SLE / SLT 2003-2004 GMC Sierra 2500 WT $670.67 |
 OUT OF STOCK 1850S-1JBA shorty headers are one of the foremost performance upgrades you can bestow upon your beloved car, truck, or SUV. JBA Headers are significantly less restrictive than stock manifolds and dramatically increase the power and efficiency of your engine. Each header is constructed from durable stainles... JBA 99-02 GM Truck 6.0L LS w/o A.I.R. w/EGR 1-5/8in Primary Raw 409SS Cat4Ward Header 1999-2002 GMC Sierra 2500 SL / SLE / SLT 2002-2002 GMC Sierra 2500 Base $742.30 |
 OUT OF STOCK 1850S-1JSJBA shorty headers are one of the foremost performance upgrades you can bestow upon your beloved car, truck, or SUV. JBA Headers are significantly less restrictive than stock manifolds and dramatically increase the power and efficiency of your engine. Each header is constructed from durable stainles... JBA 99-02 GM Truck 6.0L LS w/o A.I.R. w/EGR 1-5/8in Primary Silver Ctd Cat4Ward Header 1999-2002 GMC Sierra 2500 SL / SLE / SLT 2002-2002 GMC Sierra 2500 Base $912.51 |
 IN STOCK 1850S-3JBA shorty headers are one of the foremost performance upgrades you can bestow upon your beloved car, truck, or SUV. JBA Headers are significantly less restrictive than stock manifolds and dramatically increase the power and efficiency of your engine. Each header is constructed from durable stainles... JBA 03-06 GM Truck 6.0L LS w/o EGR 1-5/8in Primary Raw 409SS Cat4Ward Header 2003-2004 GMC Sierra 2500 Base / SLE / SLT / WT $719.27 |
 IN STOCK 1850S-3JSJBA shorty headers are one of the foremost performance upgrades you can bestow upon your beloved car, truck, or SUV. JBA Headers are significantly less restrictive than stock manifolds and dramatically increase the power and efficiency of your engine. Each header is constructed from durable stainles... JBA 03-06 GM Truck 6.0L LS w/o EGR 1-5/8in Primary Silver Ctd Cat4Ward Header 2003-2004 GMC Sierra 2500 Base / SLE / SLT / WT $896.62 |