Summit Racing SpeedCard - learn how to get 10% back up to $100

Summit Racing SpeedCard - learn how to get 10% back up to $100

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2003 CHEVROLET SILVERADO-2500-HD Parts and Accessories

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Results 1 - 24 of 101

Air Lift WirelessAir 2nd Generation On-Board Air Compressor EZ Mount Systems

Air Lift WirelessAir 2nd generation on-board air compressor EZ mount systems give you everything you need for the fastest, easiest installation possible. EZ Mount systems package the manifold and upgraded, heavy-duty compressor into one convenient, pre-assembled and factory-tested bracket—giving you everything you need to have full control of your air springs in no time at all. Control the air like a boss with your Air Lift WirelessAir 2nd generation EZ mount kit. Features and items: * Inflate and deflate each air spring independently to different pressures * LCD-display wireless controller * One-touch control from inside or outside vehicle is perfect for uneven/top-heavy loads * Two user-defined memory buttons * Compact, dual-path design * Bluetooth-enabled manifold allows for over-the-air software updates * All wiring, hardware, and fittings required for installation

4.38 out of 5 stars ( 8 )

$799.95

TCI EZ-TCU Automatic Transmission Controllers

TCI EZ-TCU automatic transmission controllers are fully configured right out of the box--no tuning is necessary. Simply install them with the included instructions and then start the systems by answering the simple setup wizard questions on the included hand-held unit. They're capable of real-time switchable calibrations, which allows for multiple setups. The multi-shift settings include a full manual mode for using bump or paddle shifters. The TCI EZ-TCU automatic transmission controllers allow for maximum electronic control over shift points, shift firmness, and shift speed. Self-diagnostics enable users of every skill level to fully utilize their capabilities. Be sure to match your particular transmission with the correct EZ-TCU controller, as some models are designed for pre-2009 applications ... and other models are for 2009 and later.

3.86 out of 5 stars ( 37 )

$1,025.95

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 ( 493 )

$939.99

$987.99

HP Tuners VCM Suite MPVI3 Credit Pro Packages

The legacy continues … and now it is bigger, better, and faster! Built for enthusiasts and professionals, MPV13 is the fastest most sophisticated OBDII interface device to date, and Pro is the new standard. Take advantage of Pro Feature Set capabilities, like standalone data logging and PROLINK+ compatibility (sold separately) already built in. MPVI3 redefines the limits of speed and control with faster standalone data logging and two times the storage capacity compared to the previous generation. Log more runs (faster) and store more calibrations on your MPVI3, all with the convenience of eliminating your laptop from the equation. HP Tuners VCM Suite MPVI3 Credit Pro packages equip you with the most inclusive scanning, logging, and calibration, making them the only tool you need in your toolbox. The MPVI3 connects your vehicle's control modules to HP Tuners' VCM Suite software. You can run complete diagnostics, monitor vehicle performance, read from various vehicle control modules, and more in VCM Suite. Optimize your performance, fuel economy, or whatever your vehicle goals may be in VCM Editor with a multitude of defined parameters. When you are ready, license and tune any vehicle currently supported by HP Tuners with the fastest read and write speeds available. Connect, read, edit, write, drive; HP Tuners VCM Suite MPVI3 Credit Pro packages are offered with or without tuning credits.

4.67 out of 5 stars ( 52 )

$799.91

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.

4.92 out of 5 stars ( 13 )

$895.00

Nitrous Express 4-Bolt Plate Nitrous Systems for GM LS Engine

Nitrous Express 4-bolt plate systems for GM LS-style engines feature a billet 90mm or 102mm nitrous plate that installs between the throttle body and intake manifold, making installation quick, easy, and attractive. Power levels can be adjusted between 50, 100, 150, 200, 250, 300, 350 and 400 horsepower. The systems are pre-machined with a second set of nitrous and fuel passages so you can easily upgrade to a dual stage system down the road. (Special note: These kits will work on 2010 and newer Camaros if you rotate the throttle body 180 degrees.) Order the model best suited for your setup. Systems include: * 90 or 102mm nitrous plate * Choice of no bottle, 5 lb., 10 lb., 12 lb., or 15 lb. bottle * Stainless bottle brackets (except no bottle system) * ProPower Lightning Series solenoids * 6 AN feed line * Braided stainless steel solenoid to plate lines * Master arming switch * WOT switch * Every nut, bolt, and electrical connector needed to complete installation

4.0 out of 5 stars ( 3 )

$857.57

$1,040.21

Eaton Posi Performance Differentials

Big torque doesn't have to mean big traction problems. Eaton Posi Performance differentials combine carbon friction discs with precision-forged gears to give you great traction, even under higher torque loads. Plus, the carbon friction discs produce smooth, quiet performance for the life of your vehicle.

4.68 out of 5 stars ( 104 )

$911.99

$947.99

PureFlow AirDog II-5G Fuel Air Separation Systems

PureFlow AirDog II-5G Fuel Air Separation Systems are the next generation in fuel delivery for a variety of diesel engine applications. The 5G is designed to be the longest lasting, most efficient, and quietest lift pump. AirDog II-5G utilizes a diaphragm-style fuel pressure regulator, allowing the pump to be boost referenced and adjusted from 7-70 psi. The 5G fuel/air separation system features a 4-bearing motor with an intermediate shaft that improves reliability and reduces pump noise. A demand flow design allows the pump to only send the necessary amount of fuel to the engine. The dual feed motor supplies fuel to both sides of the gerotor pump to decrease air bubbles that cause cavitation. The 5G system features larger 3/4 in.-16 O-ring boss inlet and outlet ports. A 7/16 in.-20 (-4) low-flow return is used to prevent aeration in the fuel being sent back to the tank. Order the model recommended for your vehicle. Additional features: * 220 or 165 gph pump models available * 4-beating motor with intermediate shaft * Larger ports over previous pumps * Diaphragm fuel pressure regulator * Demand flow design * Reduced aeration from low flow return

Not Yet Reviewed

$788.00

$816.00

On Sale

Summit Racing™ Positraction Differential Carriers

Summit Racing™ Positraction differential carriers deliver aggressive, yet smooth, controllable traction. Our carriers feature nodular iron cases, forged steel internals, strong teeth—and they're fully rebuildable. We offer fitments for dozens of axle models. Whether replacing or upgrading, Summit Racing™ Positraction differential carriers will put power to the pavement, providing the confidence and performance you need.

4.47 out of 5 stars ( 49 )

$904.99

Nitrous Express 3-Bolt Plate Nitrous Systems for GM LS Engine

Nitrous Express 3-bolt plate systems for GM LS-style engines feature a billet nitrous plate that installs between the throttle body and intake manifold, making installation quick, easy, and attractive on all LS car and truck intakes with a 3-bolt throttle body. Power levels can be adjusted between 50, 100, 150, 200, 250, 300 and 350 horsepower. Order the system preferred for your setup. Systems include: * Billet nitrous plate * Choice of 5 lb., 10 lb., 12 lb., or 15 lb. aluminum bottle * Stainless steel bottle brackets * ProPower Lightning Series solenoids * 6 AN feed line * Braided stainless steel solenoid to plate lines * Master arming switch * WOT switch * Every nut, bolt, and electrical connector needed to complete installation

3.83 out of 5 stars ( 6 )

$857.57

$1,040.21

Yukon Gear & Axle Ring and Pinion Sets

Yukon Gear & Axle ring and pinion sets are strong but quiet performers. Designed to handle some of the harshest conditions, these sets utilize the latest design and manufacturing technologies to afford you a smooth running gear that's durable and easy to set up. Yukon ring and pinions are available in hundreds of size, ratio, and axle model options. Whether you're on the street, off-road, or at the track, you'll experience unrivaled power and gear performance. Order the model recommended for your application.

4.42 out of 5 stars ( 172 )

$876.99

$898.99

Firestone Ride-Rite Analog All-In-One Kits

Firestone Ride-Rite Analog All-In-One kits allow you to adjust your Ride-Rite air springs with the simple press of a button. This can be done thanks to the in-cab analog gauge display—and the feature is great for adapting to different load amounts and environments on and off the road. These kits come with air springs, compressor, air accessories, and all components needed for installation. Order the model designed for fitment with your specific vehicle.

1.0 out of 5 stars ( 1 )

$885.78

Flex-A-Lite Direct-Fit Dual Electric Fans

Flex-A-Lite direct-fit dual electric fans were designed specifically for the cooling demands of big trucks. Vehicles equipped with these rugged fans have recorded gains in horsepower and boost in fuel economy. Other features and benefits include dual 15 in. diameter electric fans, a nylon shroud, quicker warms-ups and cool-downs, quieter operation, and a whopping 5,500 cfm maximum airflow rating. All necessary mounting hardware is included for installation.

4.47 out of 5 stars ( 15 )

$777.99

Gibson Headers

Gibson headers are performance-tuned and engine-matched to unleash your vehicle's full potential. These headers are well-suited for lowered or raised pickups and tow vehicles—because the performance gains are engineered to come in at low and midrange rpm highway speeds. They feature mandrel-bent primary tubing for increased flow, and they bolt on quickly and easily. Installing Gibson headers will give you increased horsepower and response and a cooler-running engine. 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. Gibson headers are available in a variety of sizes, configurations, materials, and finishes. Order the model recommended for your vehicle.

4.4 out of 5 stars ( 174 )

$764.99

$964.99

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.

5.0 out of 5 stars ( 3 )

$1,160.54

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.

5.0 out of 5 stars ( 1 )

$758.99

$1,000.99

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 )

$899.99

$1,121.39

Manufacturer Rebate

JBA Performance Exhaust Cat4ward Headers

Increase your horsepower and torque with JBA Cat4ward headers! They are designed with 3/8 in. thick laser-cut flanges, mandrel-bent primary tubes, and feature JBA's patented Firecone merge collectors. They're available in either steel or 409 stainless steel and are offered in a chrome plated or high-temperature silver ceramic finish for most applications. JBA includes premium-quality mounting hardware and instructions for the installation and, unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This would include components such as cylinder heads, chassis, steering, motor mounts, body mounts, bushings, etc. If aftermarket components, parts from other applications, or custom-altered parts are used on your vehicle, it is the installer's responsibility to verify fitment.

4.25 out of 5 stars ( 513 )

$816.45

$866.30

McGaughy's Suspension Lowering Kits

McGaughy's Suspension is the industry leader in the lowering and drop kits. All McGaughy's suspension lowering kits are exclusively designed, tested, and test fit for each application. Their lowering kits are of the highest quality found in the industry today. Competitors have tried to copy McGaughy's patented spindles and components for years and were stopped in their tracks. Their only way around McGaughy's rock solid patents was to change their designs in a way that drastically and negatively affected their products.

4.4 out of 5 stars ( 234 )

$837.99

On Sale

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

4.61 out of 5 stars ( 28 )

$1,049.99


$949.99

DeatschWerks Fuel Injectors

DeatschWerks fuels your passion for performance with fuel injectors specifically designed and engineered for your Sport Compact, Modern Muscle, and European vehicles. DeatschWerks fuel injectors are manufactured to fit your OE harness, fuel rail, and manifold. Because they are application-specific, you'll spend less time installing and tuning, so you can spend more time enjoying the increased performance of your ride! They provide an excellent spray pattern and atomization for optimized idle and tuning. Each set is flow-matched both statically and dynamically, and flow-balanced to within one to two percent. A flow report is included with each set of DeatschWerks fuel injectors.

4.68 out of 5 stars ( 66 )

$799.00

PowerStop Z17 Evolution Plus Stock Replacement Brake Kits with Calipers

PowerStop Z17 Evolution Plus stock replacement brake kits with calipers have everything you need for an easy, bolt-on solution for your daily driver. They include Z17 Evolution Plus ceramic pads, Autospecialty brake rotors, and non-coated replacement calipers, along with stainless steel hardware. If you need a complete, fast, and easy solution that meets original equipment standards, then PowerStop's Z17 Autospecialty brake kits with calipers are the ideal choice to refresh your braking power. (Some models may include rotors for only the front or only the rear.)

4.18 out of 5 stars ( 49 )

$829.83

Gibson Single Exhaust Systems

Gibson Single exhaust systems are Gibson's most popular exhaust … the systems you can trust when you want reliable performance from your truck. Perfect for towing and general performance applications, Gibson Single exhaust systems use popular Superflow performance mufflers that offer increased power at a cost-effective price. These are Gibson's best performing exhaust systems. Dyno results show that they make maximum torque and horsepower at the lower-end of the power band (1800 to 3000 rpm) with a deep, aggressive exhaust tone. A polished or black ceramic coated T304 stainless steel tip with clamp less connection design is included with each kit. Select systems also include a Xtreme Terrain (XT) tip. These turn-down pipes can be installed in place of the standard tip to provide extra ground clearance for treacherous terrain. Features of Gibson Single exhaust systems include: * Big block sound * Minimal interior sound levels * Heavy-duty aluminized steel or stainless steel tubes for extended durability * Mandrel-bent tubing maintains constant exhaust flow through each bend for outstanding performance * Zinc plated hangers and clamps * Easy, no-drill installation; no welding required

4.31 out of 5 stars ( 269 )

$808.99

JBA Performance Exhaust Exhaust Systems

When it comes to performance exhaust systems, most people are looking for three things: power, sound, and quality. JBA exhaust systems deliver the best of all three, giving them both great looks and performance. One of the first performance upgrades typically made to a vehicle is the addition of a performance exhaust system. While there is a high demand for performance sound, the capacity for power in the JBA exhaust systems gives JBA the extra edge. Each of these systems is tuned to provide the best possible exhaust tone without being overwhelming from within the vehicle. By replacing the restrictive factory exhaust system with free-flowing, mandrel-bent stainless tubing and quality performance mufflers, JBA has developed the power, sound, and efficiency desired in a vehicle. Each of these kits is finished with a polished, chrome plated, stainless steel tip that resists discoloring, along with high-quality hardware and thorough instructions for a simple bolt-on installation.

4.11 out of 5 stars ( 90 )

$830.20

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