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GMC SIERRA 2500 HD Parts and Accessories

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Results 1 - 24 of 141

On Sale

Fleece Performance LML CP3 Conversion Kits

Why convert your LML's fuel system from a CP4 to a CP3? Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms—resulting in costly repairs for owners when a CP4 fails. You can improve your LML Duramax's reliability and fueling capability, as well as avoid costly failure with Fleece Performance LML CP3 conversion kits. They provide OEM fit-and-finish features, like Fleece's exclusive molded hoses for the fuel feed and return, high flow CP3 fuel fittings, and their valley feed line to support aftermarket lift pump applications. Fleece Performance LML CP3 conversion kits are offered with or without pump and the pump kits come in two different style pumps—a Bosch CP3 injection pump or Bosch CP3 pump with heavy-duty 10mm cam. Choose the kit that is right for you. All kits include: * CP3 to rail high pressure fuel line * High-flow CP3 feed and return fuel fittings * Preformed fuel feed and return fuel hoses * CP3 mounting adapter * Dosing injector distribution block, feed and return lines * FCA extension harness * Low pressure fuel feed line * Hardware kit

Not Yet Reviewed

$1,999.00


$1,699.15

AMP Research PowerSteps

AMP Research PowerSteps are full length automatic electric-powered running boards that instantly extend when you open your door, and then hide themselves safely out of sight when the doors close for improved ground clearance, aerodynamics, and appearance. And their attractive design and legendary reliable, all-weather performance sets a new industry standard. Features include: * High-strength, diecast aluminum-alloy linkage arms, anodized and PTFE coated to resist corrosion * Precision, zero-maintenance stainless-steel pivot pins * Extruded aluminum steps with a textured powdercoated finish for maximum grip and durability * Weatherproof, OEM-quality electric motors and wiring harness with sealed weathertight connectors * AMP-designed electronic controller employs pressure-sensitive, pinch-proof safety technology * Integrated LED light system (standard) * 600 lbs. load capacity (each side)

4.54 out of 5 stars ( 83 )

$1,599.99

$2,299.99

PowerStop Z36 Truck and Tow Brake Upgrade Kits with Calipers

PowerStop is on a mission to deliver an easy and affordable way for any driver to upgrade their brakes--no matter where or how they use their vehicle. PowerStop Z36 Truck and Tow brake upgrade kits with calipers are recommended for trucks, 4x4s, and SUVs that not only work hard, but play hard as well. These brake pad, rotor, and caliper kits come with everything you need, including premium stainless steel hardware, for an easy, bolt-on installation. PowerStop's Z36 Extreme low-dust ceramic brake pads are reinforced with carbon fiber to provide severe-duty stopping power without sacrificing everyday drivability. They are paired with drilled, slotted, and zinc plated rotors that keep brake temperatures down by maximizing heat dissipation, critical for those long mountain descents. The bright red powdercoated calipers are not only protected against corrosion, but also stand out behind your wheels. Whether towing a boat or trailer, hauling for the jobsite, or tackling a tough off-road trail, choose easy and affordable, bolt-on performance upgrades—PowerStop Z36 Truck and Tow caliper brake kits.

4.64 out of 5 stars ( 553 )

$1,612.53

$1,619.56

On Sale

Stainless Works Performance Headers

Gain powerful sound, better performance, and improved mileage with a set of Stainless Works performance headers. Constructed from high-quality 304L stainless steel, the headers are CNC mandrel-bent and have durable 3/8 in. thick flanges. They're available to fit the factory connection point, or attach to a custom Stainless Works cat-back exhaust. Order the style you prefer and the model designed for your year/make and engine application.

4.5 out of 5 stars ( 30 )

$2,409.20


$2,028.80

AMP Research PowerStep Xtreme Running Boards

AMP Research PowerStep Xtreme running boards have been designed for those owners who live, work, and play in challenging environments. Their dual motors deliver more power when deploying and retracting, while the integrated LED lights illuminate the boards when deployed, so you'll know right where you're stepping. Features include: * High-strength, diecast aluminum alloy linkage arms are anodized and PTFE coated to resist corrosion * Precision, zero-maintenance stainless steel pivot pins * Extruded aluminum steps with a textured powdercoated finish * Weatherproof, OEM-quality electric motors and wiring harness with sealed weathertight connectors * AMP-designed electronic controller employs pressure-sensitive, pinch-proof safety technology * 600 lbs. load capacity

5.0 out of 5 stars ( 4 )

$2,199.99

On Sale

Rough Country N3 Suspension Lift Kits

Rough Country offers N3 Series suspension lift kits for thousands of trucks from the late 1960s and up—including models from Chevrolet, GMC, Cadillac, Dodge, RAM, Ford, Jeep, Toyota, Nissan, and Mazda. Depending on the application, these kits enable you to raise the front and/or rear of your vehicle anywhere from 1.5 in. to 7.5 in. This is accomplished via a variety of lift component options, such as steering knuckles, torsion bar keys, spacers, strut kits, A-arm brackets, coil springs, leaf springs/blocks, upper control arms, Add-a-Leaf, and shackles. Suspension lift kits provide many benefits, including an aggressive stance, a clean level look, increased ground clearance, and plenty of ride height to accommodate larger tires. Rough Country kits feature front and/or rear N3 nitrogen-charged shocks for incredible ride quality on- and off-road. Most kits are 100 percent bolt-on, requiring no cutting, drilling, or welding. Enhance your rig with all-new stature; order the lift kit recommended for your truck!

3.53 out of 5 stars ( 15 )

$1,549.95

$1,699.95

Go Rhino Bed Bars

Rhino bed bars from Go Rhino will add intimidating off-road style to your pickup. Constructed from 3 in. diameter steel tubing, these bed bars stand tough—and they come in a black powdercoat, chrome, or polished stainless finish to trick out any truck. Go Rhino bed bars feature a complete bolt-together design with no exposed welds or mounting hardware and also include hard plastic gaskets to eliminate any metal-to-metal contact. Choose your bed bars in single, double, or triple-bar style to get the right look for your truck. For even more utility, add an optional light bar and lights (sold separately) to your Go Rhino bed bars!

4.75 out of 5 stars ( 4 )

$1,529.99

$1,819.99

Pacific Performance Engineering Exhaust Manifolds

Replacing your stock exhaust manifold and up-pipes should be the first step in building a high performance exhaust system. Pacific Performance Engineering exhaust manifolds are co-designed by Honeywell (Garrett) and PPE, using CAD software to maximize flow characteristics. The included up-pipe bellows are high-flow, internally sleeved, and manufactured from 11-gauge, 0.120 in. wall aircraft-grade stainless steel with a 2 in. O.D. The exhaust manifolds are machined from high-silicon moly cast iron; feature built-in bosses; and are pre-drilled and tapped for a 1/8 in. NPT EGT sensor. PPE exhaust manifolds will help lower exhaust gas temperatures, reduce drive pressure, and accelerate turbo spool-up while maintaining reliability. Order the model recommended for your application.

3.0 out of 5 stars ( 2 )

$1,520.99

Manufacturer Rebate

MagnaFlow Direct-Fit Catalytic Converters

MagnaFlow direct-fit catalytic converters are designed for easy bolt-on installation for the professional installer. Welding, cutting, and tube-bending equipment are not required. These cats feature a ribbed body that minimizes expansion and distortion when the converters heat up. The ribs form a channel that protects the cushioning mat from direct exposure to exhaust gases, and they hold the ceramic catalyst in proper alignment. MagnaFlow converters use a monolithic honeycomb catalyst; the ceramic coating is designed for maximum flow and surface area, and the coating method is strictly controlled to maintain exact specifications. Improper coating could result in flow restrictions or an emissions test failure. These converters are designed to exact OE specifications and are available for the most popular vehicle makes and models.

4.07 out of 5 stars ( 423 )

$1,509.00

$2,033.00

COMP Cams Thumpr LS Master Camshaft Packages

COMP Cams Thumpr LS Master camshaft packages come as a complete valvetrain parts package that is matched for specific LS applications and desired performance. COMP Cams engineers have spent countless hours testing and creating valve train component combinations that are perfectly matched for maximum horsepower and dependability, as well as creating that wildly popular Thumpr sound in GM LS applications. These packages can add anywhere from 60 to 110 hp (depending on the application). COMP Cams Thumpr LS Master camshaft packages include: * Thumpr LS camshaft * Lifters * Timing gear set * Pushrods * Valve springs * Retainers * Valve locks * Spring seats * Valve seats

4.0 out of 5 stars ( 8 )

$1,504.95

Retrax One MX Tonneau Covers

Matte black has become a popular finish on automotive parts like fender flares, wheels, grilles, bumpers, and trim. Now you can carry that look onto the top of your truck bed with Retrax One MX tonneau covers! They feature a durable and scratch-resistant matte black powdercoat designed to look great for years. Excellent seals and weatherstripping keep your cargo dry, while the retractable cover can be locked in any position for full, partial, or zero coverage. These one-piece Lexan polycarbonate covers have strong impact resistance, and are engineered without hinges for better performance in the sizzling summer, leafy fall, heavy winter, and rainy spring. Sealed ball bearing rollers on aluminum support beams allow your tonneau cover to easily close or open into its 11 in. squared spiral track container—which prevents the cover from contacting itself, keeping wear and tear to a minimum. For a low-profile, clamp-on cover that looks great and offers strong protection, choose the Retrax One MX tonneau cover designed for your truck bed.

4.89 out of 5 stars ( 9 )

$1,699.99

$1,799.99

Motive Gear Ring and Pinion Gear and Installation Kit Combos

Want to get back the power and gas mileage that you lost from installing those big tires on your Jeep? Motive Gear makes it easy to re-gear your 4x4 with their ring and pinion gear and installation kit combos. These complete kit combos include front and rear ring and pinion sets, plus front and rear bearing kits, giving you everything you need to re-gear the front and rear differentials in one package. The kits come in a wide range of ratios for most Dana applications. Their quality is the result of years of development, outstanding design, and state-of-the-art manufacturing methods to ensure a perfect fit for an easy install.

4.75 out of 5 stars ( 8 )

$1,681.99

$2,205.99

AMP Research PowerStep Vision Running Boards

View the intelligence of the AMP's Smart Series in a new light with their PowerStep Vision. Featuring an all-new LED glow lighting system integrated seamlessly into a reimagined step profile, they provide an innovative and unique electric running board experience. AMP Research PowerStep Vision running boards are meticulously engineered and crafted with anodized cast aluminum steps, hinges, and corrosion-resistant stainless steel hinge pins. Both step surfaces receive a military-grade PTFE coating, further guarding against corrosion and unsightly wear for years of reliable service. The technology of the PowerStep Vision combines the ease and convenience of a power retracting step with built-in full-length LED lighting, offering vibrant illumination, guiding your steps for maximum safety and stability. When the steps retract, their radiant lighting transforms into color-customizable accent lighting for a sleek, custom appearance. Select the Vision PowerStep designed for your vehicle. Features and benefits: * Steps automatically deploy when you open door * AMP's classic LED courtesy lights activate when running boards are deployed * Vision's flagship lighting operates at full power when steps are deployed, then dim once retracted for sleek, color-changing accent light functionality * Integrated remote operation with AMP Research Smart Series smartphone app (iOS and Android) * Premium, single-motor design automatically deploys and retracts boards * Corrosion-resistant cast-aluminum construction for strength and durability * Anodized finish with military-grade PTFE coating * Extra-wide, non-slip 6-in. step surface runs the length of the cab * Tuck under vehicle when retracted for amazing ground clearance * PowerStep deploys lower than most other steps * Includes vehicle-specific installation guide and mount kit * Sturdy, rocker-panel-mounted brackets * Simple plug-and-play integration using the OBDII module * 5-year limited warranty * 600 lb. load capacity

Not Yet Reviewed

$1,999.99

Retrax Pro MX Tonneau Covers

Many truck owners use a heavy-duty wide T-style garage broom to clear a lot of snow off their bed cover. Trouble is, the bristles are often rough. Now, Retrax Pro MX tonneau covers combine a scratch-resistant matte black cover with industrial strength aluminum slats and support beams, allowing them to hold 500 evenly distributed pounds. They're designed for operation in temperatures ranging from -50 to 180 degrees F. Sealed ball bearing rollers allow the cover to easily close or open into its 11 in. squared spiral track container—which prevents the cover from contacting itself, keeping wear and tear to a minimum. Excellent seals and weatherstripping keep contents in the bed dry, while the retractable cover can be kept fully open or locked in any position along the rails. With their double-latch, lockable storage, great warranty, and strong construction, Retrax Pro MX tonneau covers deliver functionality and great looks over the long haul! Order the model tailored for fitment on your truck bed.

5.0 out of 5 stars ( 4 )

$2,349.99

$2,449.99

Fox Racing Shox 2.5 Performance Elite Series Remote Reservoir Adjustable Shocks

Fox Racing Shox 2.5 Performance Elite Series remote reservoir adjustable shocks give you enhanced ride quality and the control you need when heading off the pavement. Able to provide improved damping in any terrain, these high performance shocks take their design cues from Fox's off-road racing shocks—meaning they have been thoroughly perfected in brutal conditions that your truck or SUV will probably never see. Fox Racing 2.5 Performance Elite Series shocks are equipped with external reservoirs for increased oil and nitrogen capacity, while delivering a striking race look. Features and specs include: * 2.50 in. impact extruded and CNC-machined 6061-T6 hard anodized aluminum body * External reservoir design separates oil from high-pressure nitrogen gas * 7/8 in. hard chrome plated heat-treated alloy steel shaft * Race-developed high-flow piston design * Application-specific valving maximizes performance * JM92 advanced suspension fluid for top performance at all temperatures * DSC-dual speed compression adjuster system

5.0 out of 5 stars ( 1 )

$1,679.95

Titan Travel Trekker Auxiliary Fuel Systems

Now a new, better concept in auxiliary fuel systems: The TITAN Travel Trekker™ is made of military grade, cross-linked polymer--- tougher than steel and longer lasting than aluminum. Its durability is legendary. These tanks are routinely tested using state-of-the-art computer simulations as well as physical drop tests. Tanks filled completely and then dropped 30 feet onto a steel plate--- never losing a drop of liquid. They are so tough and well-proven that they are backed with a lifetime warranty. There are no welds to fail and if you ever accidentally run your gooseneck hitch into your Travel Trekker™ you will most likely find it springs right back into shape. Also, soap, water and perhaps a little furniture spray polish is all you need to keep your tank looking new. The Travel Trekker™ is baffled to minimize fuel sloshing and compact enough that it can be installed in full-sized pickup beds without interfering with most in-bed hitches and tonneau covers. With one touch, the remarkable TITAN Electronic Controller™ transfers fuel from the Travel Trekker™ to the vehicle's primary fuel tank until it is automatically stopped by the controller or the button is touched again. The controller monitors and reports the fuel level in the auxiliary system at all times. Controller installation is simple and never requires cutting into the vehicle's wiring harness which could affect the manufacturer's warranty. Fuel is pumped from the top of the tank which is safer and more environmentally responsible than gravity flow systems. The system comes complete with all necessary installation components and detailed instructions. Features Include: * Baffled to reduce sloshing * Electronic Controller transfers fuel * Fits under most tonneau covers * Lifetime Warranty * Does not interfere with in-bed hitches * Meets DOT FMCSA Title 49 Requirements * Pumps from top of tank

5.0 out of 5 stars ( 1 )

$1,519.05

Dee Zee Combo Transfer Tanks

Dee Zee combo transfer tanks offer room for liquid, room for gear—and plenty of extra room in your truck bed! These units combine a handy utility chest, together with a liquid transfer tank, so they take up less of your much-needed truck bed space. The tanks feature a radius curve design that eliminates key weld pressure points; they include a cap, a coupler for venting, and three stability baffles to prevent sloshing and dangerous weight transfer. Dee Zee utility chests have lockable stainless steel paddle handles. Combos are available in Brite-Tread aluminum, with or without an UltraBlack powdercoat finish; or in heavy-duty steel with a textured white or black powdercoat finish designed for corrosion protection. Choose the size and tank capacity tailored for your make/model—then conserve space while transporting everything you need with Dee Zee combo transfer tanks.

Not Yet Reviewed

$1,624.99

$1,919.99

MechMan Dual Bracket Kits

MechMan Alternators offers dual bracket kits for a wide range of applications, from the 1990s and up. Unless otherwise noted, these kits include two alternators, as well as brackets, regulators, pulleys and serpentine belts. Order the model recommended for your vehicle.

5.0 out of 5 stars ( 1 )

$1,599.00

Westin Pro-E Power Running Boards

Westin Pro-E power running boards are superior upgrades that combines the functionality and appearance of your vehicle. They are designed with a practical feature that automatically deploys when your vehicle's door is opened, allowing easy entry and exit. When the door is closed, the running boards smoothly retract, seamlessly integrating with your vehicle's body and maintaining its sleek appearance. Pro-E boards are equipped with two waterproof IP68 rated motors per side, and are engineered for durability and reliability in any weather condition. The integrated LED lights illuminate the 6 in. wide, durable aluminum step surface, ensuring enhanced visibility and safety. Whether it's day or night, you can confidently step onto these running boards with their impressive weight capacity of up to 300 lbs. per side. Westin Pro-E power running boards are constructed from corrosion-resistant aluminum and finished with a durable textured black powder coat. The included vehicle-specific mounting brackets and hardware guarantee a seamless installation process, ensuring a perfect fit for your vehicle. Choose the boards designed for your vehicle.

1.0 out of 5 stars ( 1 )

$1,723.99

Retrax Pro XR Tonneau Covers

Retrax Pro XR tonneau covers are manual retractable truck bed covers constructed from industrial strength aluminum slats that provides unsurpassed strength and ruggedness. Retrax Pro XR tonneau covers not only provide durable protection, but their low-profile design will enhance the appearance of your truck. Features include: * Unique spiral track system prevents the cover from coming into contact with itself as it opens and closes * Tonneau covers effortlessly glide along the rails by the sealed ball-bearing roller system * Creates dependable seal to keep the elements out and protect your cargo * They are key lockable in any position along the rail providing unlimited flexibility in your hauling capacity * Compatible with most T-slot accessories * Increased cargo capacity above and below the covers * Opens and closes easily with one hand * Patented low-profile design * Resilient matte finish

4.0 out of 5 stars ( 1 )

$2,499.99

$2,599.99

On Sale

Stainless Works Long Tube Headers

Stainless Works long tube headers are constructed from CNC mandrel-bent tubing with laser-cut flanges. These high-flow headers are made for your specific application, ensuring a perfect fit and excellent performance.

4.33 out of 5 stars ( 6 )

$2,298.05


$1,935.20

American Racing Headers Chevrolet and GMC Truck Headers

American Racing Headers Chevrolet and GMC truck headers are long tube headers offered in a choice of primary sizes. Available with or without catalytic converters, most are long system headers designed to be a bolt on to your factory exhaust or most aftermarket exhaust systems. Some modifications may be required. ARH Chevrolet and GMC truck headers include merge collectors and a crossover Y-pipe assembly. Available for 2WD and 4WD trucks, they combine outstanding performance with great fit and easy installation. Additional features of American Racing Headers Chevrolet and GMC truck headers include: * 100 percent long-lasting 304 stainless steel * 3/8 in. thick laser-cut flanges for a warp-free seal * Hand-ported TIG-welded inlets * Optimized primary tube routing for superior fit and performance * Merge collectors include welded scavenger spikes * Catted systems feature 200 cell, metallic substrate catalytic converters for extreme durability * Systems include necessary gaskets and hardware for installation * The only set of headers you should ever need to buy * All American Racing Headers exhaust systems are for off-road use only

4.4 out of 5 stars ( 5 )

$1,966.16

$2,179.46

South Bend Clutch Super Street Dual Disc Clutch Kits

South Bend Clutch Super Street dual disc clutch kits are offered for a range of applications and setups. These clutch kits are made using high performance materials and include everything you need for your clutch installation. When it comes to street performance, you can count on South Bend for top-quality components.

4.0 out of 5 stars ( 1 )

$2,088.97

BDS Suspension Lift Kits with NX2 Nitro Series Shocks

BDS Suspension steps up the performance and capability of your truck or Jeep with their NX2 Nitro shock lift kits. Designed to improve stance, each kit includes the necessary components to set your vehicle up right with clearance for larger tires at an affordable price. Featuring a set of NX2 Nitro Series shocks, BDS lift kits will also include either ProRide coil springs for improved ride quality and more articulation, Glideride leaf springs to provide full lift height and increased capacity, or steel blocks and add-a-leaf for a level stance from front to rear. They may also include other upgrades that add strength and improved handling. Select the BDS NX2 Nitro shock lift kit engineered for your vehicle. NX2 Nitro Series shocks: * Nitrogen-charged * Twin-tube design * 10-stage velocity-sensitive valving * Dual-welded ends for increased strength * 1 3/8 in. high-flow piston * Self-lubricating seals * Silver powdercoat finish

5.0 out of 5 stars ( 1 )

$1,933.60

$2,175.60

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