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ATP Professional Auto Parts is a leader in automatic transmission replacement parts. Founded in 1955—back when no aftermarket manufacturers offered automatic transmission...
ATP Professional Auto Parts is a leader in automatic transmission replacement parts. Founded in 1955—back when no aftermarket manufacturers offered automatic transmission parts—ATP now offers a wide array of high-quality products for both automatic and manual transmissions. Summit Racing carries a huge selection of ATP Professional Auto Parts, including flywheels, flexplates, transmission pans, transmission filters, clutch forks and cables, ring gears, and more. Plus, we offer ATP’s transmission fluid additives, friction modifiers, and differential supplements. Whether you’re rebuilding an old...
ATP Professional Auto Parts is a leader in automatic transmission replacement parts. Founded in 1955—back when no aftermarket manufacturers offered automatic transmission parts—ATP now offers a wide array of high-quality products for both automatic and manual transmissions. Summit Racing carries a huge selection of ATP Professional Auto Parts, including flywheels, flexplates, transmission pans, transmission filters, clutch forks and cables, ring gears, and more. Plus, we offer ATP’s transmission fluid additives, friction modifiers, and differential supplements. Whether you’re rebuilding an old transmission or want to keep your current tranny running strong, ATP Professional Auto Parts can help you get the job done right.
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ATP automatic transmission master repair kits enable you to conveniently rebuild and restore performance. They include everything needed to give your transmission new service life—including clutch plates, gaskets, seals, O-rings, and (depending on your application) they may include an oil filter, bushings, or even a vacuum modulator. If you have transmission work to perform, let the pros at ATP furnish the master repair kit designed for your model.
( 44 )
$161.99
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$191.99
Improve slow, sloppy shifts with the addition of ATP automatic transmission modulator valves. These valves will keep your transmission shifting on cue, according to load. ATP adjustable replacements allow you to optimize shift points to meet vacuum load and improve gas mileage and performance. A bad modulator valve can be bad news for your transmission. Get control of your transmission for proper shifting of increased or decreased engine vacuum loads. Replace improper working valves with ATP automatic transmission modulator valves.
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$16.99
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$17.99
Service your automatic transmission with quality parts from ATP. Their shifter cables are available for many applications and meet or exceed OE standards. They are offered in more than a dozen lengths and configurations. Order the replacements recommended for your vehicle.
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$25.79
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$67.99
ATP automatic transmission filter kits include everything you need for a fast, efficient filter change. They include all gaskets, filters, and other components that you might require. These replacement filters are specifically designed for your transmission; therefore, improper fitment is never an issue! Order the kit recommended for your application.
( 109 )
$8.99
ATP transmission oil pump seals and gaskets keep fluid safely contained. They're available in a variety of configurations for specific applications. The gaskets meet and exceed OE specifications for a great fit and a leak-free seal. These affordable replacements can mean the difference between a tight seal and an oily mess on the driveway. Order the transmission oil pump parts needed for your vehicle.
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$2.99
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$67.99
ATP automatic transmission governor seals are no-compromise, exact-fit replacements providing a hassle-free install. They are manufactured to meet or exceed original equipment specifications for leak-free performance.
( 3 )
$2.99
ATP offers detent cables for a wide range of vehicle and transmission applications. These replacement kickdown cables connect the throttle mechanism to your transmission, just like the originals. Factory cables can bind, break, or become sluggish over time. ATP detent cables are an affordable remedy designed for a perfect fit and optimum performance.
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$12.99
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$31.99
Over time, pan gaskets can crack and seep fluid. ATP automatic transmission pan gaskets are perfect for your OE replacement needs. These factory-style gaskets are constructed from a molded rubber/steel or fiber composition, providing longer life than stock cork composite gaskets. ATP pan gaskets offer you shrink-free, leak-free performance for many specific vehicle applications. Get professional parts to keep your car on the road longer—and save by doing the work yourself with ATP automatic transmission pan gaskets.
( 15 )
$10.99
Upgrade your automatic transmission with ATP shift improver kits. Sluggish shifts are replaced with faster shifts and the strong performance that you expect from your vehicle. ATP shift kits improve performance and extend the life of your transmission. Make your healthy transmission healthier with the addition of ATP automatic transmission shift improver kits.
Not Yet Reviewed
$73.99
ATP speedometer drive gear housings act as a bearing and locator for the gear—and provide transition from gear to speedometer cable. These OE gear sleeves have been manufactured to GM specifications for fit, form, and function. They're compatible with a variety of transmission applications, including TH200, TH250, and TH350.
( 11 )
$16.99
ATP automatic transmission selector shaft seals will stop a leaking problem. These quality replacements are manufactured to meet or exceed original equipment specs, so you can be sure they fit and perform properly. Models are available for thousands of applications. Retain your transmission's fluid with shaft seals from ATP.
( 11 )
$9.99
ATP automatic transmission control solenoids are designed to replace faulty factory units and keep your transmission shifting smoothly. They're available in a variety of configurations for dozens of transmission types—on thousands of vehicle applications. These replacement solenoids meet or exceed OEM specifications.
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$27.99
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$98.99
ATP offers front pump bushings for thousands of applications. These inexpensive replacement rings offer a no-compromise, exact fit for use with countless automatic transmission types and sub-models. They're machined to meet or exceed original equipment specs. Order the bushing recommended for your vehicle.
( 1 )
$4.99
Nothing's more annoying than a leak. If you're experiencing this issue from the area where the kickdown detent cable attaches to the transmission housing, it's time to replace the detent seal. ATP seals offer an exact fit that meets or exceeds original equipment specs. With the help of ATP kickdown detent seals, you can fix leaks and keep lubricant off your driveway or garage floor.
( 4 )
$1.99
ATP's transmission dipstick tube seals serve two purposes: preventing engine oil from leaking—and ensuring no harmful contaminants enter the lubricant. Manufactured from high-quality materials, the seals are available in a variety of sizes and configurations for fitment on thousands of applications. These OE-style replacements meet or exceed factory specs to ensure easy installation and optimum performance.
( 6 )
$3.99
ATP synthetic automatic transmission fluid protectant is designed for use with all transmission fluids, including Dexron VI. It prevents torque converter shudder and clutch pack chatter that's common in some transmissions. ATP synthetic automatic transmission fluid protectant prevents overheating, reduces wear, and ensures proper shifts, while extending the life of your transmission fluid.
( 1 )
$21.99
ATP offers replacement flexplates in a variety of sizes, shapes, and configurations. The steel plates are manufactured to exacting tolerance for precise fit. Order the model recommended for your year/make, engine, and transmission application.
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$30.79
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$72.99
Nothing's more annoying than a leak. If you're experiencing this issue from the area where the speedometer cable attaches to the transmission housing, it's time to replace the speedometer drive pinion seals. ATP pinion gear seals offer an exact fit that meets or exceeds original equipment specs. They're available in different sizes and diameters for a wide range of vehicles with GM transmissions. With the help of ATP speedometer pinion seals, you can fix gear leaks and keep lubricant off your driveway or garage floor.
( 3 )
$1.99
ATP Graywerks harmonic balancers offer 55 years of experience mixed with quality materials and workmanship. These units are made to meet or exceed the original equipment quality and SAE material specifications. Nodular iron or steel balancers are available. Each component is precision-machined, and assemblies are dynamically balanced for the best performance. Some models have degree markings and include Woodruff keys and mounting hardware (where necessary). Calm the vibrations in your ride with a new harmonic balancers from ATP, available for a wide range of vehicle and engine applications.
( 51 )
$84.99
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