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GMC SIERRA 2500 HD Parts and Accessories

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Results 1 - 24 of 749

On Sale

B&M Street and Strip Transmissions

B&M remanufactured Street and Strip transmissions are put together with new gaskets, bushings, seals, thrust washers, high performance friction materials, and gold zinc plated hardware. The front pump is rebuilt to B&M specs and the valve body is recalibrated. They're built for extreme conditions and are perfect replacing a worn transmission, cruising, and racing.

3.46 out of 5 stars ( 13 )

$4,049.95


$3,643.95

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Eaton Detroit Truetrac Differentials

Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like a limited-slip differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant. These replacement units are available for dozens of axle applications.

4.78 out of 5 stars ( 501 )

$939.99

$1,279.99

On Sale

MBRP PLM Series Exhaust Systems

MBRP's PLM Series exhaust systems feature a muffler delete pipe that takes the place of your muffler, providing the ultimate in exhaust flow and sound. By doing so, they increase both horsepower and torque and improve fuel economy. The systems are manufactured from heavy-duty steel pipe with an aluminized coating for maximum protection. Their specially designed 2-piece tailpipe and bolt-on hangers allow for a simple, straightforward installation. These PLM Series exhausts are available in a variety of sizes, styles, and configurations for fitment on specific vehicle applications.

4.03 out of 5 stars ( 35 )

$459.99


$367.99

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

Odyssey Drycell Batteries

Odyssey sealed rechargeable drycell batteries provide high engine-cranking pulses and are capable of 400 deep cycles. They can be installed on their sides or at any angle and have a 2-year storage life at 25 degrees C.

4.86 out of 5 stars ( 225 )

$429.99

ATK High Performance Chevy LQ4 6.0L 460 HP Long Block Crate Engines

ATK High Performance Chevy LQ4 6.0L 460 hp long block crate engines lay down impressive power that can be run with factory fuel injection or retrofitted with a carburetor. They're hand-built, balanced, and blueprinted using top-quality parts. Don't waste time trying to salvage a high-mileage short block when you can get a fresh mill that's ready for your choice of components to make it your own. ATK Chevy LQ4 6.0L 460 hp long block crate engines include: * Handpicked and seasoned 6-bolt main block * Aligned and honed main bores * OE steel crankshaft * 3.622 in. stroke * OE connecting rods * Hypereutectic dish top pistons * Aluminum cylinder heads * Hydraulic roller camshaft * Timing chain and gear set * 1.7:1 ratio rocker arms * 24-tooth reluctor

4.4 out of 5 stars ( 10 )

$5,049.99

Optima Yellow Top H6 Batteries

From the company that brought you the revered Red Top battery comes the new Optima Yellow Top H6 batteries. Designed to fit a wide range of vehicles with one part number, these batteries are the revolution for battery products. With Optima's tried and true AGM cells, the Yellow Top H6 battery will be the one to beat for years to come. Key features: * Deep-cycle and cranking power * Up to 3 times longer life * 15 times more vibration-resistant * Virtually spill proof * Mountable in virtually any position * Maintenance-free * Faster recharging * Optimal starting power * 300+ discharge/recharge cycles

4.75 out of 5 stars ( 44 )

$369.99

Borla S-Type Cat-Back Exhaust Systems

Borla S-type cat-back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower and produce a more aggressive sound and higher flow. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium 300-Series austenitic stainless steel, superior to T-400 Series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow and power, and precision computer-controlled CNC manufacturing ensures an accurate fit. It's just what you'd expect from the world's most experienced (and most winning) exhaust brand.

4.8 out of 5 stars ( 932 )

$1,220.99

$1,327.99

PowerStop Z36 Truck and Tow Brake Upgrade Kits

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.<br><br>PowerStop Z36 Truck and Tow brake upgrade kits are recommended for trucks, 4x4s, and SUVs that not only work hard, but play hard as well. They come with everything you need, including premium stainless steel hardware, for an easy, bolt-on installation. The low-dust Z36 Extreme ceramic brake pads are reinforced with carbon fiber to provide severe-duty stopping power without sacrificing everyday drivability. These pads are paired with Evolution drilled, slotted, and zinc plated rotors that keep brake temperatures down by maximizing heat dissipation, critical for those long mountain descents. Whether towing a boat or trailer, hauling for the jobsite, or tackling a tough off-road trail, you'll get an easy and affordable, bolt-on performance upgrade with PowerStop's Z36 Truck and Tow brake upgrade kits.<br><br><strong>Features and Benefits</strong><p><ul><li>This complete brake kit has been engineered to handle the added stress of towing, hauling, mountainous driving and lifted trucks</li><li>Proprietary <strong>Carbon-Fiber Ceramic Z36 brake pads</strong> enhance the strength of a typical ceramic brake pad compound to handle heavier loads</li><li><strong>Stainless-steel pad shims</strong> resist the increased temperatures common on heavy duty applications</li><li><strong>Low-dust braking</strong> validated through on-vehicle 3rd party tests in Los Angeles, showing on average <strong>30% less dust versus OE</strong></li><li><strong>Drilled & Slotted performance rotors</strong> provide maximum cooling</li><li><strong>Bolt-on upgrade</strong> for stock brakes, no modifications necessary</li><li>Includes <strong>stainless-steel installation hardware</strong> and <strong>high-temperature ceramic brake lubricant</strong></li><li><strong>Brake rotors, pads & hardware</strong> engineered to work together to increase the overall braking power on vehicles with heavier loads</li><li><strong>Rotors are zinc plated</strong> for maximum protection against rust</li><li>Buy with confidence from the <strong>originator & industry leader</strong> of brake kits</li></ul>

4.77 out of 5 stars ( 2768 )

$293.24

$512.41

Summit Racing™ Plastic/Aluminum Radiators

A Summit Racing™ plastic/aluminum radiator gives your engine bay the current cooling update it needs. These units are designed for premium performance, while fitting your vehicle's original mounts, so your ride can have a new radiator without modifications to the brackets and fittings. The radiators are available in various sizes and styles to fit your application. Efficient and economical, Summit Racing™ replacement radiators are an excellent option to restore the cooling performance your vehicle requires.

4.49 out of 5 stars ( 83 )

$216.99

$359.99

On Sale

Cold Case Performance Aluminum Radiators

Cold-Case performance aluminum radiators are available and affordable for all. These high-quality, tube-and-fin performance radiators are true OE styles for most applications. Each Cold-Case design distributes fluid more evenly, eliminating hot and cold spots. Also, the massive cores take up the entire width of their tanks, so you get the most efficient cooling possible. The radiators drop-in without modifications needed (on most) and look original. Plus, Cold-Case stands behind its quality and research with a limited lifetime warranty on their products. All Cold-Case radiators feature: * Lightweight, efficient aluminum construction * 100 percent TIG-welded * Internally welded filler necks offer a clean, factory look * Two oversized cooling rows for increased capacity * 1 in. to 1 1/4 in. tubes for higher volume * Works with factory filler cap * Includes OEM-style petcock * 42.7 percent lighter than comparable copper radiators * 30 percent thicker materials than no-name aluminum radiators * 60-day COOL guarantee

4.13 out of 5 stars ( 648 )

$432.54

$737.54


$407.54

$712.54

Hedman Street Headers

For the price, no other part can give you the horsepower and fuel economy improvements of Hedman headers. They make Hedman Street headers so well that they guarantee them to be free from defects--including cracks in the tubes and welds--for the life of the headers. Hedman Street headers are available uncoated or in Black Maxx or their polished HTC thermal ceramic coated finishes and, as an added bonus, they also come with all necessary gaskets and mounting hardware. Unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This includes components like cylinder heads, chassis, steering, motor mounts, body mounts, and bushings, etc. If your vehicle is using aftermarket components, parts from other applications, or custom-altered parts, then it is the installer's responsibility to verify fitment. Special warning regarding Hedman painted headers only. The paint on these headers is not designed as a final finish; it is designed to protect the headers after the manufacturing process and during shipping. This paint will not withstand the high heat associated with engine break-in, nor will it withstand the heat cycles associated with any type of driving. It is recommended that this protective coating be stripped, and a high heat paint or coating designed for use on headers be applied.

4.17 out of 5 stars ( 2458 )

$470.99

$654.99

On Sale

Frostbite Performance Cooling Aluminum Radiators

Protect your ride from overheating! Now you can maximize cooling efficiency with Frostbite's performance cooling aluminum radiators. They're engineered to cool more effectively and weigh less than the older OEM-style brass units, enhancing the overall performance of your engine. Frostbite radiators are available in a variety of application-specific fitments, each unit engineered with aircraft-quality aluminum cores, fittings, tanks with billet aluminum filler necks, and OEM-style brass petcocks. A proper cooling system starts with the right radiator—the Frostbite!

4.12 out of 5 stars ( 320 )

$417.95


$375.95

McGaughy's Suspension Lift Kits

Give your rig a lift—via McGaughy's suspension lift kits! Their key components feature a brilliant gloss metallic silver powdercoat for longevity and durability. Installation is easy with minimal drilling; no re-routing of the exhaust, or cutting or grinding on the front or rear differential is necessary. This equipment is CNC-formed, machined, and laser-cut in-house from the highest grade materials. The spindles are CAD-designed for a perfect and accurate fit. Complete kits include the lower A-frame support rods, along with compression struts to add extra support and prevent the front and rear crossmembers from flexing. Dozens of kits are available for vehicles from the 1990s and up. Choose the style, lifted height, and other options recommended for your application; then elevate your rig to a higher stance with McGaughy's suspension lifts.

4.25 out of 5 stars ( 8 )

$2,178.99

$6,735.99

Odyssey Performance Series Batteries

Odyssey Performance Series batteries are designed to handle the increased use of on board accessories in today's vehicles. They combine long service life, high reliability, and deep cycle capabilities. Performance batteries provide all the reliability of the Odyssey Extreme Series batteries, without the high cold cranking amps or reserve capacity many people may not require. The Performance Series batteries contain flat plates made of 99.99 percent pure lead--not lead alloy, like many conventional batteries.

4.97 out of 5 stars ( 63 )

$334.99

BAK BakFlip MX4 Tonneau Covers

BAK BakFlip MX4 covers literally do it all. From their sleek contemporary styling to their state-of-the-art functionality, BAK BakFlip MX4 tonneau covers have been enhanced with a premium-density foam core, upgraded latch housing components, and an all-new integrated tailgate seal that allows your tailgate to be shut with the cover open or closed. Their aircraft-grade aluminum construction, along with a black powdercoat finish, makes them not only one of them most durable tonneau covers on the market, but also one of the most appealing. Are you traveling with lumber, tools or a heavy payload? Keep your valuable cargo dry—and safe—beneath a BAK MX4 tonneau cover!

4.44 out of 5 stars ( 94 )

$1,199.99

$1,249.99

Summit Racing™ Step Bars

Don't think you can get quality, heavy-duty step bars at a reasonable price? Think again. Our Summit Racing™ step bars deliver durable construction and attractive styling at an amazingly affordable price. They're available with a polished, or black powdercoated finish (depending on the application). Summit Racing™ step bars feature recessed step pads to provide sure footing, and an easy, no-drill installation.

4.56 out of 5 stars ( 179 )

$119.99

$199.99

On Sale

MBRP Performance Series Exhaust Systems

MBRP Performance Series exhaust systems maximize exhaust flow and minimize exhaust temperatures. They're manufactured from 100 percent aluminized steel and come standard with MBRP's smaller muffler. Fully sealed tubing adds years to your system, avoiding rust-through on seams. Performance Series units are road, track, and dyno-tested; and they're specially tuned to deliver an aggressive exhaust note. Order the model designed for your specific vehicle. Other features and benefits: * Fully mandrel-bent tubing and minimal bend degree angles increase airflow * Better gas mileage * Bolt-on, no-weld design for easy installation * Direct-fit to the OEM hangers; clamps and accessories included * Available for gas truck and diesel applications * Limited one-year workmanship warranty

4.27 out of 5 stars ( 45 )

$484.99

$514.99


$387.99

$411.99

On Sale

Flowmaster Stainless Steel American Thunder Exhaust Systems

Flowmaster Stainless Steel American Thunder exhaust systems have been designed with the latest exhaust technology available. Through this technology, you will experience improvements in acceleration, passing power, and fuel mileage. The key to these performance improvements is Flowmaster's use of mandrel-bent tubing. Their tubing allows for superior exhaust gas flow, while their stainless steel construction allows for their corrosion-resistant qualities. These American Thunder exhaust systems also feature a stainless steel muffler(s) that'll give you plenty of Flowmaster sound.

4.4 out of 5 stars ( 303 )

$829.95

$1,249.95


$745.95

$1,123.95

On Sale

MBRP SLM Series Exhaust Systems

MRBP SLM Series exhaust systems are the starting point to getting the most from cold air intakes, programmers, modules, and downloaders. They're constructed to the same specifications as MRBP's top-of-the-line Pro Series. Built from 16-gauge T409 stainless steel with a muffler delete pipe, SLM units are tuned for an aggressive sound and free-flowing performance. Order the model designed for your diesel application. Features and benefits: * More pulling power * Improved throttle response * Greater fuel efficiency * Mandrel-bent tubing; minimal bend degree angles * Gets hot exhaust out fast * Drops exhaust gas temperature by up to 200 degrees F * Direct-fit to OEM hangers * Bolt-on, no-weld installation * Clamps and installation accessories included * MBRP stamped logo on exhaust tip (if tip is included) * Limited 5-year workmanship warranty. (This series may, with time, develop surface rust which is not covered with this warranty.)

4.38 out of 5 stars ( 13 )

$629.99


$503.99

McGaughy's Premium Suspension Lift Kits

McGaughy's Premium suspension lift kits are a high-quality way to outfit your rig with a new attitude. Delivering your preferred 2 to 10 in. front and/or rear lift, these kits provide more than their basic package and include everything you need to achieve the proper stance. McGaughy's offers different options and components in their kits to provide the most complete suspension kit for your specific vehicle; and most of the parts are finished with a durable black or silver powdercoat. Elevate your truck; order the suspension lift kit recommended for your application.

2.0 out of 5 stars ( 1 )

$3,447.99

$5,118.99

Pacific Performance Engineering LLY/LBZ/LMM Cast Iron Cylinder Heads

OEM Duramax cast aluminum cylinder heads fall short over time; the different heat expansion crates between cast iron engine block and cast aluminum cylinder head cause head gasket scrubbing, and eventually blown head gaskets. Aluminum cylinder heads are also prone to warping, melting, and/or cracking in high performance applications where excessive heat is introduced. Pacific Performance Engineering LLY/LBZ/LMM cast iron cylinder heads are the ultimate upgrade to your Duramax engine and eliminate any head gasket or cracking concerns. Cast from high-quality alloyed grey iron, PPE LLY/LBZ/LMM cylinder heads offer elevated fatigue strength and heat and creep resistance, which prolongs the cylinder head's lifespan significantly. They also share the same heat expansion rate as the stock cast iron cylinder block, so no more blown head gaskets. These cylinder heads also feature cast-in fuel injector cups and solve the OEM injector cup leaking issue. Each head comes complete with brand new springs, spring retainers, spring locators, valves, valve seals, valve keepers, valve seats, valve guides, rocker arm dowels, and freeze plugs. Whether you have a damaged aluminum cylinder head or a desire for better reliability and longevity on your Duramax engine, the Pacific Performance Engineering LLY/LBZ/LMM cast iron cylinder head is undoubtedly the best choice. Component features and benefits: * Premium 21-4N, Stellite-reinforced exhaust valves, and chrome-silicon alloy intake valves * All valves are fully nitridated with increased abrasion resistance * High-strength, CNC-machined chromoly steel spring retainers and spring locators * Upgraded tapered valve springs provide faster response and eliminate valve float at high rpms * Powdered metal valve seats offer superior wear and heat resistance * Significantly reduced diesel engine clatter compared to the factory aluminum cylinder heads * Increased thermal efficiency compared to aluminum heads * 3-Year Unlimited Mileage Warranty

Not Yet Reviewed

$1,349.99

On Sale

Flowmaster Outlaw Series Exhaust Systems

Flowmaster Outlaw Series exhaust systems are mandrel-bent for maximum performance and include specially designed mufflers. They deliver bold, dynamic interior and exterior tones for enthusiasts who covet the most aggressive components available. These systems include hardware and tips, where applicable--so installation is quick and easy. The kits are available in dozens of configurations for fitment on specific vehicles, including standard, crew, extended, and extended crew truck cabs; and long or short bed lengths. Order the Flowmaster Outlaw model designed for your application.

4.57 out of 5 stars ( 272 )

$969.95


$871.95

On Sale

Flowmaster American Thunder Exhaust Systems

Flowmaster American Thunder exhaust systems are designed with the latest exhaust technology available--resulting in improved acceleration, passing power, and fuel mileage. A key to these performance upgrades is Flowmaster's use of mandrel-bent tubing, which allows superior exhaust gas flow. The systems also feature mufflers (single or dual) that deliver plenty of the rich Flowmaster sound you expect. Components are built from stainless steel or aluminized steel; and some models include tips. American Thunder exhausts are available in more than a hundred configurations for fitment on specific truck and car applications.

4.37 out of 5 stars ( 545 )

$729.95


$655.95

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