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2004 GMC SIERRA 2500 HD Parts and Accessories
Showing In Stock Items. Show All 116 Items.
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.
( 507 )
$1,017.99
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$1,299.99
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.
( 555 )
$1,184.26
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$1,236.71
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
Fleece Performance Freedom Series DuraMax Cylinder Heads
Fleece Performance introduces the Freedom Series cylinder heads for 6.6L Duramax engines, found in many Chevy and GMC trucks from 2001 and up. Each cylinder head is manufactured in-house at the state-of-the-art Freedom Racing Engine Shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with new valve guides, springs, and valve seals. Perfect for the daily driver or towing application, these heads utilize stock valves with a 45 degree angle on the intake and exhaust ports. Available with new or remanufactured casting.
Not Yet Reviewed
$1,099.00
Pacific Performance Engineering LB7 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 LB7 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 LB7 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 LB7 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
S&B Filters Fuel Tanks
S&B Filters fuel tanks maximize the space under your diesel truck and empower you to fly by more gas stations like a compact, fuel-efficient car. The folks at S&B know even lifted trucks often sacrifice clearance for larger holds. That's why they design their tanks with a contour around the driveshaft area, helping you maximize clearance. A transfer pump fitting allows you to pull fuel from your now larger tank for equipment—saving valuable space in your truck's bed. Spend less time at the pump and more time driving with the S&B high-capacity replacement fuel tank designed to fit your vehicle. Features, items, and specs: * Brass vent and rollover vent valve * Included baffles cut down on fuel sloshing * Integrated fuel sump for aftermarket fuel pumps * Integrated OEM-style fitting for sending unit installation ease * Front cradle support design (instead of a band that wraps under) to help avoid band debris damage and failure where it's most likely to occur * Front support skid plate on some models * No modifications necessary for installation
( 5 )
$1,449.00
PSC XD Steering Gears
PSC XD steering gears feature 45mm bearings and sector shafts to eliminate the flex that could cause seals to fail. They feature ratios and components that make parking easier, highway driving more stable, and maneuvering effortless. OEM steering gears in some trucks could be a problem, until now. Make handling your vehicle a pleasure with PSC XD steering gears.
( 14 )
$1,095.00
Centerforce Dual Friction Clutch Kits
Centerforce dual friction clutches generate up to a 90 percent increase in holding capacity over stock systems. These clutch-and-disc sets are designed for engines producing high horsepower and big torque outputs. Perfect for 4WD vehicles, all Centerforce clutch systems provide smooth engagement and light pedal pressure without compromising high performance.
( 309 )
$1,049.95
South Bend Clutch Dyna Max Ceramic Clutch Kits
South Bend Clutch Dyna Max ceramic clutch kits engage your rig with ceramic buttons on each side of the clutch disc. The kits include flywheels and offer modified pressure plates for a higher plate load and smooth clutch engagement. South Bend Clutch Dyna Max ceramic clutch kits fit several high performance diesel rig applications.
( 3 )
$1,160.54
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!
( 5 )
$1,109.99
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$1,399.99
Auburn Gear Select-A-Loc Differentials
Auburn Gear Select-A-Loc differentials maximize your vehicle's traction with on-the-go system engage. These electronically controlled traction-enhancing differentials are selectable lockers offering the traction control of a limited-slip differential and a full-locking differential--all in one! When locker switch is off, the clutch pack activates the limited-slip mode. As torque increases, the separating forces within the differential gears increase, causing the clutch pack to be compressed, in turn providing bias torque to the highest traction wheel. When the locker switch is turned on, electronic current is sent to the electromagnetic coil which locks the axles together. Auburn Gear Select-A-Loc lockers feature a unique cone-clutch design with gearing made from aircraft-quality 9310 heat-treated billet steel for tough-as-nails strength. The lockers operate quietly without any shift fork or pins to line up to change the locker mode. With a limited-slip mode for on/off-road excitement and a true locker mode for the quarter-mile or nasty off-road terrain, Auburn Gear Select-A-Loc differentials deliver superior traction capabilities on the street, at the track, or off-road.
( 10 )
$1,225.99
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$1,324.99
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.
( 2 )
$1,070.98
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$1,292.38
Yukon Gear & Axle Ring and Pinion Gear and Installation Kit Combos
Yukon Gear & Axle ring and pinion gear and installation kit combos are complete packages that include front, rear, or front and rear ring and pinion sets, along with the most complete master overhaul kits on the market—giving you everything needed to re-gear the front and/or rear differentials in one package. Conceived to handle some of the harshest conditions, these combos utilize the latest design and manufacturing technologies to afford you quiet running gear that's strong and easy to set up. The included Yukon master rebuild kits undergo extensive research to ensure a perfect fit and hassle-free install with the very best components. Order the combo designed to fit your application.
( 14 )
$1,049.99
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$1,073.99
Mishimoto Intercoolers
Maximize your ride's performance with a Mishimoto intercooler! These high performance intercoolers significantly lower air intake temperatures, while safely increasing horsepower for small and large turbo applications. Constructed from 6061 aluminum and precision TIG-welded, Mishimoto intercoolers feature sleek styling in a choice of colors for the ultimate in good looks. Whether you want to show it off or go with the popular sleeper look, Mishimoto makes an intercooler to give your engine--and your style--a boost!
( 2 )
$1,049.95
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
( 1 )
$1,329.05
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$1,357.55
Tuff Country EZ-Ride Suspension Lift Kits
Tuff Country EZ-Ride suspension lift kits increase fender clearance and allow for larger tires, while their EZ-Ride technology maintains a great ride. All Tuff Country EZ-Ride lift kits are of the finest quality and are engineered for simple installation at an affordable price. Most kits bolt-on, require no cutting or drilling, and are available for a wide range of vehicles in a choice of lift heights. New shocks are not required on most installations. Features of Tuff Country EZ-Ride suspension lift kits, depending on the application, may include: * Spacers mounted above the OEM coil springs/struts * Rear add-a-leafs added to the existing leaf springs * Rear cast iron lift blocks mounted below the OE leaf springs * Re-indexed factory torsion bars--without "cranking up" * Control arms that retain proper suspension geometry * Control arms with PTFE-lined FK Uni-ball joints * Dropped pitman arm and/or track bar relocating bracket(s) for proper alignment * Extended radius arms to improve articulation * Replacement radius arms that eliminate the need to drop radius arms--with no loss of ground clearance * Axle pivot brackets with camber adjustment * Transfer case drop kit * Polyurethane spring bushings * PTFE pads in leaf springs to eliminate squeaking * Tapered, snub-rolled, and pre-set leaf springs * Application-specific hardware and U-bolts
( 73 )
$1,254.99
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$1,467.99
McLeod RST Street Twin Clutch Kits
Intended for high-horsepower street fans, the McLeod RST Street Twin clutch kits are economically priced twin disc clutches that use your existing flywheel. Able to handle up to 800 hp, the RST Street Twin clutches remain completely street-drivable. The organic lined clutch discs provide smooth engagement with a soft pedal effort, making these clutch kits ideal for the street performance enthusiast. (For select vehicles where these clutches are not adaptable to your existing flywheel, a new flywheel is included in the kit.) Here are some additional features of the McLeod RST Street Twin clutch kits: * Alignment tool included * Lighter-than-stock pedal feel * Will bolt to factory flywheel * CNC-machined and anodized flywheel adapter ring * Organic disc facing for smooth and even clutch engagement with excellent release qualities * Low rotating mass for quick revs * Blanchard ground floater with multiple straps to reduce noise for streetability
( 84 )
$1,195.00
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$1,395.00
Fleece Performance CP3K Fuel Pump Kits
Fleece Performance CP3K fuel pump kits are a valuable lesson in supply and demand. Simply put; your diesel engine's demand for more fuel cannot be supplied by your stock CP3 pump, thus its' time for a new supplier--CP3K. These modified pumps are engineered to eliminate the factory fuel flow restriction that usually begins at 3,000 rpm. Your stock pump at this point starts losing fuel flow and rail pressure, which equates to loss of horsepower when you need it most. Reverse the trend; maintain the desired fuel rail pressure through your entire rpm range with cost-effective Fleece CP3K fuel pumps.
Not Yet Reviewed
$1,299.00
SSBC-USA Tri-Power HD Quick-Change Caliper Upgrade Kits
SSBC-USA Tri-Power HD Quick-Change caliper upgrade kits are your key to heavy-duty braking performance. Designed to bolt to your stock spindles and reuse the stock cradle brackets, these calipers offer maximum clamping force and even pressure distribution across the brake pad. The kits include Tri-Power HD 3-piston aluminum calipers, high performance pads, and all necessary mounting hardware. They're available for hundreds of applications from 1999 and up.
( 1 )
$1,111.00
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$1,206.00
Firestone Ride-Rite F3 Wireless All-In-One Kits
Looking for a complete suspension solution without breaking the bank? Firestone Ride-Rite F3 Wireless All-In-One kits bundle high-performance Ride-Rite air springs with a wireless air compressor for maximum performance and convenience. They'll set up your suspension with everything necessary to maintain factory ride quality, boost your load support—and give you the option of adjustable air pressure via use of a compressor. You can adjust your Ride-Rite air springs with the simple press of a button. This can be done thanks to the F3 wireless gauge that enables you to control the pressure let in and released from the air springs without being confined to hard-to-reach places within the cab of your truck. Kits include Ride-Rite air springs, air compressor, air accessories, and all other components necessary for installation. (Note: Drilling may be required when installing the air compressor; drilling is NOT required to install the air springs.) Order the model designed for fitment on your specific vehicle.
Not Yet Reviewed
$1,058.87
BakFlip G2 Tonneau Covers by BAK
Keep your cargo protected from the elements—and thieves! BAK BakFlip G2 tonneau covers combine the convenience of a folding design with hard tonneau security and durability. You can fold the BakFlip G2 back for complete truck bed access or fold it down and lock it in place to protect your valuable cargo. Its aluminum panels won't shrink or stretch during weather changes and are capable of holding up to 300 pounds of evenly distributed weight. Features include: • Sleek, low-profile fit • Aluminum panels resist changes in weather • Treated to resist the harmful effects of UV rays—no cracking or warping • Innovative locking arms secure the cover when its folded against your rear window • Tongue and groove weatherstripping keeps rain and snow out • No-drill installation
( 28 )
$1,049.99
Dee Zee Liquid Transfer Tanks
Perfect for long hauls or remote refuels, Dee Zee liquid transfer tanks can raise your hauling capacity significantly. They are available in models with various volumes and features to fit almost any truck bed application. While most of these auxiliary tanks are not rated for gasoline or flammable fluid transport, many can be used for diesel or other non-flammable fluids. Find the right size, capacity, tank material, and finish for your application—and get your truck outfitted with a Dee Zee liquid transfer tank today.
( 1 )
$1,000.99
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$1,183.99
Fluidyne High Performance Radiators
Fluidyne high performance radiators feature aluminum end tanks and 100 percent NOCOLOK brazed aluminum cores, rather than the epoxy-bonded types used by others. These cores are built using high-efficiency cooling fins that deliver maximum performance and durability. The radiators are offered in universal sizes, as well as exact fit, with all brackets, fittings, and hoses set up to match the original equipment layout for easy installation—and they meet ISO 9001 standards for quality. Fluidyne radiators are available in crossflow and downflow styles, and a range of sizes for vehicle-specific applications; some models also include a transmission cooler. Keep your ride cool on the hottest days or at the track with a Fluidyne radiator.
( 32 )
$1,095.00
Edge Juice Modules with Attitude CTS3 Programmers
Edge Products' Juice modules with Attitude CTS3 programmers are the ultimate tuner for the average diesel owner and horsepower junkies too! Featuring state-of-the-art CTS3 technology, the Juice with Attitude offers a whole new realm of features to continue pushing the limits of on-the-fly power, control, and monitoring. This in-cabin controller not only monitors vital vehicle parameters but allows you to shift-on-the-fly by controlling the Juice module for maximum control and power gains. If you own a diesel truck and you're looking for complete control over your driving experience, look no further than Juice with Attitude CTS3 programmers. Additional product attributes: * Slim, sleek case with state-of-the-art swipe technology * 5 in. full color, high-resolution touchscreen with the latest swipe technology (with one-touch easy menu navigation) * Light sensitivity meter to dim screen as ambient light decreases * HDMI style plug for power and linking EAS accessories * Custom color mixer for gauge arcs, needles, and backgrounds * Multiple gauge layouts, including on-the-fly power level adjustment on screen * Wi-Fi updates and notification center * Multiple power levels for mileage, towing, daily driving, performance, and extreme power curves * Additional Hot Unlock available for some applications for an additional power level * Up to 180 hp and 400 torque gains, depending on application * Dynamic built-in safety features like EGT backdown, cold engine protection, transmission slip backdown and more Note: Some features may vary by make/model/year. Configure your vehicle to search for parts and features specifically for your application.
Not Yet Reviewed
$1,349.95
