Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
1999 GMC JIMMY Parts and Accessories
Showing In Stock Items. Show All 60 Items.
Summit Bucks
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.
( 503 )
$629.99
HP Tuners VCM Suite MPVI4 Credit Pro Packages
HP Tuners Introduces VCM Suite MPVI4 Credit Pro packages, the latest evolution of their industry-leading OBDII interface. Built for professionals and enthusiasts alike, the computer programmers connect your vehicle to VCM Suite software (5.2+) for faster, smarter, and more powerful tuning and diagnostics than ever before. With upgraded hardware, expanded connectivity, and future-ready Wi-Fi capabilities, the MPVI4 redefines what's possible in performance calibration and data acquisition. Models are available with 0, 2, 4, 6, or 8 credits. HP Tuners VCM Suite MPVI4 Credit Pro packages feature: * Improved standalone logging: the most powerful device yet, capable of delivering standalone logging performance on par with VCM scanner and a wired connection * Upgraded hardware architecture: New internal processor for improved data throughput and flashing performance; 30x more memory than previous generation MPVI3 * High-speed USB-C connectivity: Faster, more reliable communication with your PC and vehicle * Bluetooth 5.2: Seamless wireless connection for scanning, logging, and TDN support * Wi-Fi ready (future update): Wireless VCM Suite connectivity coming soon * Enhanced storage and efficiency: Increased onboard memory for robust logging sessions * Improved OBDII fitment: A revised, tapered design means a more secure connection and better compatibility with even more makes/models * Built-In Pro feature set: Standard on every MPVI4, enabling standalone data logging and external sensor integration with PROLINK+ * RGB status LEDs: Clear visual indicators for power, connection, and activity status * Cross-Platform Compatibility: Works with VCM Suite (5.2+), TrackAddict, and RaceRender
( 2 )
$599.95
—
$699.93
B&M Holeshot Torque Converters
A higher-than-stock stall speed as delivered by these B&M Holeshot converters will provide several advantages and benefits to vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low-end power and torque. These high-stall converters allow the engine to launch the car at higher rpm, where more torque is available. They're a very good choice for the typical street machine that is looking for better launch capability and more strength.
( 83 )
$649.95
—
$686.95
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.
( 104 )
$664.68
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.
( 49 )
$641.99
MechMan Elite Series Billet Alternators
MechMan Elite Series billet alternators offer great amperage output and durability. Their 6-phase technology, combined with massive twin rectifier assemblies and 12 diodes, makes these stunning alternators totally durable for daily use. Plus, the 6-phase hairpin stators make the alternators fundamentally more efficient, equating to incredible output at extremely low engine rpm, less energy wasted in the form of heat, and more horsepower to the wheels. MechMan Elite billet models are available for replacement or upgrade, and they are available in a unique selection of finishes and amperage outputs. Choose one designed for your vehicle.
( 10 )
$524.00
—
$629.00
Powertrax Grip Pro Traction Systems
Powertrax Grip Pro traction systems are the latest design in differential technology. They combine the smooth operation of a limited-slip differential, with the strength of a fully machined, forged steel case. Using 3x2 spiral gear engineering, the Powertrax Grip Pro delivers progressive and variable traction. Based on throttle input, you are in control of how much traction is applied. These differential systems are great for use where finesse is just as important as brutal traction. On the road or track, in the rain or snow, Grip Pro is a winner! The systems come fully assembled and there are no friction plates—so you can use any gear oil you like, including full synthetic and racing lube.
( 21 )
$686.40
—
$728.02
Harwood Fiberglass Lift-Off Hoods
Whether you want to draw more air into your engine, lose some front-end weight, or you just want a cool looking hood, these Harwood fiberglass lift-off hoods are the way to go. They come in a variety of great styles, from cowl induction to Ram Air. Most of the hoods provide extra carburetor and engine clearance, as well as increased airflow. These lift-off hoods are Harwood's lightest offerings and require the use of aftermarket mounting fasteners and hardware. These hoods aren't designed to work with factory hinges or latches.
( 63 )
$566.99
—
$579.99
Summit Racing™ Pro LS Conversion Radiator and Fan Combos
Summit Racing™ Pro LS conversion radiators and fan combos are available for most popular LS swap applications. They're quality-constructed from aluminum to provide exceptional weight savings over stock equipment. These combos also include an electric fan, fan shroud, and mounting hardware. You've put a lot of time and money into transforming your everyday street machine into a street demon, but to truly capture that performance that's too hot to handle, you've got to turn the temperature way down. Install one of these cooling aluminum radiator and fan combos in the front of the engine bay to neutralize the threat of overheating. The radiators come in a variety of configurations, each possessing its own unique combination of features, to work for the specific make and model vehicle that they're intended.
( 13 )
$647.94
Motive Gear Ring and Pinion Sets
Motive Gear is the leading manufacturer of driveline products for just about any vehicle, whether it is a stock daily driver or a full-competition 4x4 or race car. They are proud to offer an unmatched selection of quality components engineered and manufactured for the vehicle and for the way it is driven. Motive Gear ring and pinion sets are engineered to meet or exceed OEM specifications at a price that won't break your budget. Their broad selection of ring and pinion ratios is available for just about every vehicle made from the 1940s through the present. All Motive Gear products meet strict quality standards through advanced manufacturing techniques and are backed by their strong warranty. Their in-house quality control lab utilizes state-of-the-art equipment to continuously check Motive Gear products for strength, tolerance, and hardness. Only after meeting stringent quality standards are Motive Gear products packaged and ready for delivery.
( 284 )
$512.99
—
$578.99
Hedman Hot Rodz Engine Swap Headers
Hot rodding has always been about taking two or more parts that were never designed to work together and make then work together seamlessly. It is a never-ending effort to shove as much horsepower and torque under a vehicle's hood as possible. Unfortunately, any project can come to a screeching halt when it comes to bolting up a set of headers. Hedman Hot Rodz engine swap headers are specifically designed for non-factory engine and vehicle model combinations. Available in mild steel or stainless with 16-gauge header tubes uncoated and coated. The HTC silver and Black Maxx ceramic-metallic coatings offer superior heat insulation and anti-corrosion properties to protect your "Hedder" investment and retain more heat inside the header tubes for increased exhaust velocity and improved scavenging.
( 71 )
$635.99
Instant Rebate
PowerStop Z23 Evolution Sport 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. Forget standard, off-the-shelf parts. PowerStop's Z23 Evolution Sport brake upgrade kits with calipers comes with everything you need--pads, rotors, calipers, and premium stainless steel hardware for an easy, bolt-on upgrade for your daily driver. Along with increased braking power, the carbon fiber ceramic brake pads feature a low-dust formula to keep those wheels looking great while you say goodbye to nasty brake dust. These pads combine with drilled, slotted, and zinc plated rotors to ensure a cool, smooth ride that protects against rust and corrosion, while the powdercoated calipers not only protect against corrosion, but also stand out behind your wheels. Give your daily driver the easy and affordable performance upgrade it deserves--PowerStop Z23 Evolution Sport caliper brake kits.
( 230 )
$733.16
—
$743.65
MechMan High-Output Racing Alternators
MechMan 6-phase hairpin high-output alternators offer a solution to the inadequate alternators that come from the factory on specified vehicles. These replacement units feature twin rectifiers with 12 massive press-fit diodes, as compared to the small 8-diode rectifier in the stock alternator. Even mild performance builds will typically consume more amperage than what stock alternators can provide. Hairpin stator technology provides better high-rpm durability and better resistance to heat from the turbo manifold. The alternators utilize a high rpm-friendly larger diameter pulley, and bolt directly in place of the original equipment. Select the high-output racing alternator model recommended for your application. Note: A 4-gauge or larger positive and negative cable needs to be run between the alternator and the battery terminals for proper function.
Not Yet Reviewed
$519.00
Belltech Lowering Kits with Nitro Drop 2 Shock Absorbers
Race cars ride low to the ground for greater agility, handling, and cornering. Obtain this physics-defying stance with Belltech lowering kits with Nitro Drop 2 shock absorbers. The completely redesigned Nitro Drop 2 shocks fuse internal valve technology with state-of-the-art construction to achieve superlative performance characteristics. They drop your center of gravity for nimble steering, diminished squat, and eye-popping looks, while producing maximum durability with quality-driven dust boots and rubber bushings. Nothing could be better than capturing unsurpassable performance with the ease of an OEM replacement!
( 67 )
$584.00
MechMan Elite Series Cast Alternators
MechMan Elite Series cast alternators offer great output at idle RPM and excellent durability in a direct bolt-in package. Their 6-phase technology, combined with massive twin rectifier assemblies and 12 diodes, makes these alternators totally durable for daily use, while still maintaining great output at low-rpm. These alternators will make 180 amps at engine idle speeds—with a full 250 amp output at cruising speeds. The units come with an OEM diameter pulley, making them perfect for high-rpm and racing use. They're available for fitment on a wide range of cars, trucks, and vans from the 1990s and up. Order the model recommended for your application. (Note: Elite Series cast alternators may require a rectangle to oval adapter harness if your vehicle was equipped with the CS144 heavy-duty charging option from the factory. This is not common.)
( 8 )
$519.00
Key Parts Steel Hoods
Key Parts steel hoods are designed and constructed using precision tooling to offer nothing less than a high-standard fit and function. Each style features a black EDP coating for rust protection, strength, and durability—and is extensively tested to ensure quality. Key Parts steel hoods are paintable to match the color of your vehicle; they use factory hardware and fasteners to facilitate an easy install for professional looking results. The hoods are available in dozens of models, including styles such as Cowl induction, Ram Air, and Cobra. Order the replacement needed for your specific application.
( 739 )
$542.99
RideTech StrongArms Tubular Control Arms
RideTech StrongArm tubular control arms are designed to stiffen up your vehicle's chassis, while providing a smoother ride. They feature a tubular design that offers maximum strength—and are available for a variety of front and rear positions. The control arms include bushings and factory-installed ball joints (front), making installation easier. Get optimum suspension geometry with a set of RideTech StrongArm tubular control arms; order the kit recommended for your vehicle.
( 17 )
$575.00
Richmond Gear Ring and Pinion Sets
Richmond Gear is the leading manufacturer of professional-quality, high performance ring and pinion sets. The superior quality of these gear sets is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. Richmond also offers these gear sets in a lightened version for the weight-conscious enthusiast. Their lightened ring and pinion sets feature an outstanding rotating weight loss of up to 6 lbs., ground pinion threads for trouble-free installation, and a special heat treatment for improved strength.
( 307 )
$548.99
ProEFX Hoods
ProEFX hoods offer your ride quality steel construction with a protective EDP coat primer. Additionally, they use a factory-style inner frame for the best fit and they bolt to the factory hardware for an easy installation. Do a professional job with ProEFX hoods!
( 28 )
$537.99
Powertrax Grip LS Traction Systems
Powertrax Grip LS traction systems are the latest design in differential tech upgrades. They combine the smooth operation of a limited-slip differential, with the strength of a fully machined case. These systems use carbon fiber and steel friction plate technology, delivering streetable and consistent traction. They arrive completely assembled--and because there are friction plates on machined internal gears, they are fully rebuildable. The carriers are the ideal solution for just about any light truck, sport utility, and muscle car on the road today.
( 5 )
$689.38
Motive Gear Performance Ring and Pinion Sets
Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicles. Their gear sets are made from first-run steel, they never use recycled metal. This allows Motive Gear Performance ring and pinions to handle the extreme torque from high-horsepower racing engines. Extensive engineering, computer-controlled heat treatment, superior strength, quality and the widest selection of racing gear ratios, makes Motive Gear Performance ring and pinions the clear winner! Engineered to the highest standards, every Motive Gear Performance product goes through rigid quality control processes in their in-house lab. Motive Gear Performance also offers a lightweight alternative to standard ring and pinion gear sets. Their AX Series ring and pinions are designed to increase horsepower and efficiency by removing rotating weight. Professional race teams have used custom-lightened drivetrain parts for years, resulting in faster times and more wins. The AX Series gears from Motive are lightened during the manufacturing process; this results in gear sets that have been engineered, not modified. Computer-controlled heat treatment, index tooth spacing, and CNC machining all go into AX Series performance gear sets. Motive Gear Performance: What the pros run!
( 194 )
$656.98
Powertrax Lock-Right Lockers
Powertrax Lock-Right and performance lockers' straight-line performance is equal to a solid spool axle, yet they automatically unlock to allow for full differentiation in turns. They also reduce the excessive noise, tire wear, and drivetrain damage associated with other lockers. Powertrax lockers replace the spider gears in your differential carrier without affecting your ring and pinion settings. The whole job can be done in your driveway with common hand tools in a couple of hours. A carrier is not included.
( 148 )
$640.99
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!
( 15 )
$569.95
Belltech Lowering Kits
If you're looking for fun and good looks with a head-turning pickup that you can depend on tomorrow and for years down the road, then Belltech lowering kits are the right suspension choice. Each suspension system that they offer is specifically designed to work and fit properly on your vehicle.
( 92 )
$520.00
—
$532.00
