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2003 CADILLAC Parts and Accessories
Showing In Stock Items. Show All 709 Items.
Optima RedTop Starting 12-Volt Batteries
Optima RedTop Starting 12-volt batteries are the ultimate power source for cars, trucks, SUVs, hot rods, and other high-performance vehicles. They're engineered with unique Spiralcell technology, delivering a stronger burst of ignition power, while extending the battery life up to three times longer than conventional models. Maintenance-free RedTop AGM batteries are sealed, leak-proof, and resistant to vibrations—so you can mount them anywhere and in virtually any position on your vehicle. Order the Optima battery designed for your application, and expect a perfect start every time.
( 1541 )
$279.99
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$319.99
Optima YellowTop Deep-Cycle 12-Volt Batteries
Optima YellowTop Deep-Cycle 12-volt batteries are high-performance, dual-purpose power sources. They're great for applications requiring repetitive amperage drain and quick recharging—like trucks with winches, commercial or public safety fleets, and vehicles loaded with electronics and accessories. YellowTops also power forklifts, tractors, and other heavy equipment. The maintenance-free AGM batteries deliver premium ignition starts, while sustaining high power levels even when system loads exceed the alternator output. Optima deep-cycle models are sealed, spill-proof, and can be mounted in most any position. They are far more resistant to vibrations than standard batteries, and will perform up to three times longer. For consistent power and faster recharges, order the YellowTop designed for your needs.
( 424 )
$319.99
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$329.99
Yukon Gear & Axle Dura Grip Positraction Carriers
Yukon Gear & Axle Dura Grip positraction carriers offer great traction and strength, and yet are not overly aggressive for the streets. These nodular iron or steel replacements are 4-spring, Raybestos composite, clutch-style, limited-slip carriers—with internal gears machined from forged 4320 steel with stronger teeth. Assembled in the USA, the Yukon differential carriers are rebuildable, allowing for repairs or modifications without buying a new unit. They're available for fitment with nearly two dozen axle models. What are you using to transfer power? Choose smooth operation with strong lockup abilities to transfer torque—benchmarks of the Yukon Gear & Axle Dura Grip positraction carriers.
( 141 )
$394.00
Mishimoto Oil Cooler Kits
Enthusiasts who push their high performance cars to the limit understand the importance of keeping their oil temperatures low to prevent damage, or even seizure of the engine. Mishimoto oil cooler kits are designed to extend the life of your engine by ensuring that your essential high-wear engine components, such as piston rings, skirts, and cam bearings, are sufficiently lubricated with cooler oil. The kits include a durable aluminum oil cooler, stainless steel braided hose lines, fittings, and all necessary adapters. Models are also available to cool transmission oil/fluid. Order the universal or vehicle-specific cooler that's best suited for your application.
( 50 )
$399.95
DiabloSport PredatorX Tuners
DiabloSport PredatorX tuners deliver the latest in tuning technology, allowing you to take control of your tuning needs from your smartphone. The iOS/Android compatible apps pair with the PredatorX dongle to give you complete tuning access from your pocket. The OBDII dongle can stay connected to the vehicle full time, so you're always just seconds away from being able to make tuning changes. The tuners are preloaded with power adding tunes for multiple octane levels, as well as transmission tunes for applications where they are needed. For those seeking more than the provided tunes offer, there is a plethora of end user based parameters that can be adjusted. Speed limiter, tire size, timing and fueling at wide-open-throttle, rev limiters, idle speed and so much more can be adjusted through the PredatorX. Features: iOS and Android support Tune from your smartphone! Preloaded with Performance tunes Trucks get tunes for 87 octane and Premium fuel Performance cars get tunes for 91 and 93 octane fuel TCM tunes are included End user adjustable parameters Disable AFM! Calibrate Speedometer for Taller Tires Set axle ratio if you've swapped gears Remove Speed Limiter Adjust Idle Speed Raise Rev Limiters Live data monitoring Read/Clear Diagnostic Trouble Codes (DTCs) Adjust options like idle, speed limiters, rev limiters, tire size, gear ratios and more. Support for 07-18 GM gas trucks and SUVs, 05-19 Corvette, and 10-24 Camaro V8, and more!
( 19 )
$302.95
Derale PWM Adjustable Fan Controller Kits
Enhance your engine's performance with a Derale PWM adjustable fan controller kit. Utilizing cutting-edge technology, these Derale Performance fan controllers constantly adjust fan speed to keep the desired engine temperature that can be preset. Additional features include: * Constantly adjust fan speed to maintain the desired temperature * Control multiple electric fans up to 65 amp capacity * Finned aluminum housing * Automatic resetting circuit breaker * Air conditioning override circuit built-in
( 24 )
$343.97
DiabloSport inTune i3 Platinum Computer Programmers
DiabloSport inTune i3 Platinum computer programmers come pre-loaded with industry-best Diablo tunes created by their experienced, professional calibrators. They too, are performance enthusiasts addicted to horsepower and racing—and they appreciate the need for custom tunes to take their vehicles to the next level with additional modifications. inTune i3 Platinum units will get your ride "dialed-in," whether you've added a cam, headers, a supercharger, or power-adder. The i3 performance programmers work hand-in-hand with CMR (Chip Master Revolution), allowing you (and the tuning shop of your choice) to tune specifically for your aftermarket modification—from there, the sky is the limit! You've made a significant investment in premium parts for your vehicle. Now let the DiabloSport inTune i3 Platinum computer programmers tie all the ingredients together to make your ride stand out! Order the model designed for your vehicle application.
( 152 )
$475.95
Powermaster High-Amp Alternators
With modern automotive accessories, such as audio/video equipment, navigation systems, aftermarket lights, and other electrical components, the need for higher amperage alternators has increased. Powermaster has responded to this need with these high-amp alternators. They're available in several finishes to suit your style and performance needs. Powermaster high-amp alternators feature: * High output with excellent idle performance * Hand-wound, custom-designed stators * Heavy-duty regulators and rectifiers * Gold plated battery post for better electrical connections * Proof of performance tags
( 114 )
$334.99
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$408.99
B&M Tork Master Torque Converters
Tork Master converters are B&M's most affordable performance torque converters. They feature precision pump drive tubes and are pressure tested, fully balanced, and ready to install. The Tork Masters are excellent all-around performance street converters. They are not recommended for big block or supercharged applications.
( 199 )
$460.95
Summit Racing™ High-Output Ignition Coils
Our Summit™ high-output ignition coils give you additional volts of spark energy in a simple, direct replacement package. These coils mount in the stock location with no special mounting needed, but have a lower primary resistance, higher rpm capability, and greater output than stock. They're available in a variety of styles, both universal and application-specific, and can be ordered individually or in sets.
( 377 )
$271.99
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$484.91
S&B Filters Cotton Filter Cold Air Intake Kits
S&B Filters cotton filter cold air intake kits are designed to improve airflow and bring down the temperature of the air that enters your engine. To achieve more airflow, S&B oiled cotton filters are built with four layers (or eight for diesels) of the highest-quality cotton gauze. They use deeper, wider pleats with more per filter. Plus, their manufacturing process yields almost no "bleed", creating a greater open surface area. All of this adds up to more airflow with excellent protection. The filter elements are washable, reusable, and will protect your engine from harmful dirt and debris. Gain performance and a sporty, high-tech appearance under the hood of your rig with an assist from the S&B Filters cotton filter cold air intake kit best suited for your application. More product features, items, and specifications include: * Silicone rubber (not urethane) filters and couplers help ensure they won't degrade or crack, while resisting temperatures as high as 400 degrees F * Helps balance air/fuel ratios to improve gas mileage * Cross-linked intake tube minimizes restriction * Custom air box (where applicable, including some with clear lids) keeps loose dirt and turbulent underhood air out of your intake * Specific year, make, and model design makes them simple to install, with help from the easy-to-use installation instructions and illustrations * Included mounting hardware for replacing your stock assembly in 30 minutes or less in most cases
( 455 )
$379.00
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.
( 235 )
$429.99
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.
( 287 )
$266.99
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$350.99
Derale Hyper-Cool Remote Fluid Coolers with Fan Kits
Derale Hyper-Cool remote fluid coolers with fan kits provide the largest temperature drop of any fan-mounted cooler. Their unique fin and plate design maximizes heat dissipation and minimizes oil pressure drop, which is especially important on late model electronic overdrive transmission applications. The Derale Hyper-Cool remote fluid coolers have AN inlets and outlets and include hose barb adapters for standard rubber line. Rated at a whopping 30,000 GVW, the Derale Performance Hyper-Cool remote fluid coolers with fan make an excellent addition to your late model diesel truck.
( 87 )
$490.16
Mahle Original Engine Gasket Sets
Mahle Original offers engine gasket sets for a variety of cars, trucks, and Jeeps. These full gasket sets include the many seals needed to rebuild your engine—all in one convenient package. The gaskets are made from a variety of materials, such as multi-layered steel or molded rubber, for use on various components. Order the Mahle Original engine gasket kit recommended for precise fitment on your vehicle application.
( 28 )
$339.99
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$357.99
Fel-Pro Engine Gasket Kits
Fel-Pro engine gasket kits include the seals needed for a complete rebuild, all in one convenient and affordable package. Each kit features the premium-quality gaskets required for your specific engine—from head, intake, and exhaust gaskets … to valve cover, fuel and water pump gaskets, and many more. These sets are available for thousands of vehicle applications. Match your year/make/model to the Fel-Pro engine gasket kit designed for precise fitment.
( 570 )
$269.99
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$274.99
Summit Racing™ High Performance Automatic Transmission Rebuild Kits
Summit Racing™ high performance automatic transmission rebuild kits feature the necessary parts to get your transmission working more efficiently than ever. Available for a variety of transmissions, the Summit Racing™ high performance automatic transmission rebuild kits are an excellent choice for increased durability and performance. Kits include: * Alto Red clutches * Kolene coated or Premium Steels * High performance band * High performance transmission filter * Bushing kit * Oil seals * Gaskets * Lip seals
( 66 )
$327.99
On Sale
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.
( 317 )
$302.22
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$356.99
PowerStop Performance Powdercoated Brake 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 Performance powdercoated brake calipers are made specifically with the enthusiast in mind. They bolt directly in place of the stock calipers, and they look and perform great behind stock or custom wheels. PowerStop calipers and the brackets are treated with an electrostatic high-temperature powdercoating. The easy-to-clean powdercoating helps to resist rust and corrosion, thus extending their life. They are 100 percent pressure-tested to verify piston operation and prevent any possible leaks from occurring, ensuring that every caliper is inspected for quality and safety. Calipers are expertly assembled using new pistons, seals, slide pins (where applicable), dust boots, bleeder screws, and stainless-steel brake pad abutment clips. High-temperature EPDM rubber dust boots and premium silicone lubricant are used for a smoother operation and an extended life in extreme conditions.
( 746 )
$255.99
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$318.99
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.
( 173 )
$324.99
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$427.99
MechMan Elite Series Alternators
MechMan Elite Series alternators offer the highest possible amperage and durability available in a reasonably sized alternator. Each one features MechMan's 6-phase technology combined with massive twin rectifier plates and 12 press-fit diodes for excellent durability. 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. Choose the Elite alternator designed for your vehicle.
( 24 )
$429.00
MechMan S Series Billet Racing Alternators
The MechMan S Series of 6-phase billet racing alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower per kW than conventional 3-phase alternators. They feature 12 diodes, twin rectifier plates, and outstanding airflow to ensure long service life, even in severe conditions. The alternators are available for a broad range of domestic and import applications in 170 or 240 amp configurations—as well as a variety of finishes. (The 170 amp S Series unit uses a stock diameter pulley, making it perfect for high-rpm and racing use.)
( 13 )
$449.00
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$499.00
McGaughy's Spindles
McGaughy's spindles are manufactured from 4140 chromoly steel and machined on state-of-the-art CNC machines. Whether you're a pro or just the average garage Joe, McGaughy's spindles will make your task an easy one.
( 1 )
$354.66
Superchips Flashpaq Tuners
Superchips Flashpaq tuners will optimize both engine and transmission calibration throughout the entire powerband. They're effective from part-throttle through wide-open throttle. Features include: * Internet updateable * Built-in diagnostic trouble code definitions * Built-in help screens * USB communications * Custom application upgradeable * Multiple tuning levels * Increased user options for more control * Ergonomically-designed case * Large, soft key buttons * Permanently mounted cable * 300 percent larger screen * Backlit screen for easy-to-read night use
( 99 )
$460.95
