Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
Transmissions & Transmission Parts
Showing In Stock Items. Show All 561 Items.
Not Showing Customizable Items. View Customizable Items.
TransGo Performance Shift Kits
TransGo's Performance shift kits give you the hard-launching, tire-blazing shifts you want, after just a few hours' work with basic hand tools. TransGo even has kits for computer-controlled, 4-speed automatics. Their performance shift kits can be installed with the transmission in the vehicle and they come with complete instructions. Some kits even include a step-by-step video to walk you through the installation process.
( 511 )
$30.47
—
$329.14
Sonnax Zip Kits
Sonnax Zip kits are engineered to cure common problems associated with today's automatic transmissions. Sonnax Zip kits eliminate: * Burnt clutches * Line pressure instability * Loss of fuel economy * No line rise * Pressure loss * Shift concerns * TCC apply and release concerns * TCC codes * Pressure switch codes
( 11 )
$102.99
—
$236.99
Sonnax Shift Improver Performance Packs
Sonnax shift improver performance packs combine innovative heavy-duty performance calibration for firmer shifts under load without sacrificing low-speed drivability. The precision components in these kits upgrade your transmission for maximum achievement and durability by recalibrating pressures, recalibrating shift accumulation, and including improved parts for areas that commonly wear. They are suitable for any heavy-duty application and are a critical foundation for other upgrades when modifying the transmission for high performance use. Sonnax shift improver performance packs additional facts and features: * Shorter shifts, which get progressively firmer with load * Faster pressure increase and higher overall pressure for greater clutch/band holding power * Three ultra-reliable, patented, billet pinless accumulator pistons * Unique 1-2 accumulator spring combination for shifts with character * Improved high rpm pressure * Third accumulator valve gets the 2-3 right the first time, every time * Consistent results, no guessing on calibration * Prevents worn accumulators and separator plate * Optional TCC on-off conversion prevents excess TCC pressure
( 6 )
$176.59
—
$384.33
TransGo Automatic Transmission Reprogramming Kits
TransGo automatic transmission reprogramming kits are designed with performance in mind. Most, but not all models contain additional features like Gear Command that allows you to hold manual low to any speed, and shift back to low at any speed. They are great for strip cars or 4x4 rock crawlers needing to select low and not have it upshift. Most TransGo automatic transmission reprogramming kits can be tuned for HD (Heavy Duty) use by following the recommendations in the kits.
( 40 )
$132.57
—
$304.71
On Sale
B&M Shift Improver Kits
B&M Shift Improver kits are the easiest way to get the stout performance you've always wanted out of your automatic transmission. All you need are some hand tools and an afternoon, and you can turn your transmission into a B&M-tuned unit. Each kit has two stages to fit your needs: RV/Towing and Street/Strip.
( 109 )
$87.19
$63.89
—
$87.19
TransGo Automatic Transmission Shift Kits
TransGo automatic transmission shift kits include the needed items to restore proper function to your valve body with much improved drivability and durability. A wonderful addition to your OEM classic vehicle. Features and benefits: * Raises overall line pressure * Calibration for a higher speed manual low * Crisp shift performance and more durability
( 5 )
$10.43
—
$238.00
On Sale
B&M Transpak Kits
Recalibrate your automatic transmission for optimum performance and extended life! B&M Transpak kits create new shifting characteristics by re-routing fluids through your transmission's valve body. Each kit includes two options: RV/Heavy-Duty and Hi-Performance Street. RV/Heavy-Duty is for towing, off-roading, or other heavy-duty use. Hi-Performance Street gives you quicker, snappier shifts than RV/Heavy-Duty, with standard shift points and automatic features when in "drive."
( 24 )
$166.95
$150.25
—
$213.95
TransGo Automatic Transmission Valve Body Repair Kits
TransGo valve body repair kits give you the components needed to restore proper shifts and correct other problems with your automatic transmission. They will help correct cold rough shifts, downshift problems, long shifts, hard or soft shifts and lockup problems. Repair your automatic transmission with TransGo valve body repair kits.
( 9 )
$10.29
—
$219.20
On Sale
BD Diesel Valve Body Electronics Upgrade Kits
You'll have a heavy-duty, reliable transducer when you install BD Diesel valve body electronics upgrade kits. One of the leading causes of faults with automatic transmissions is failed governor pressure transducers, especially if you run higher line pressures. These kits replace the stock plastic transducer with a sturdy metal unit that can handle greater line pressures without failing; preventing over-pressure codes and wild oscillations, thus extending transmission life.
( 12 )
$288.95
$256.48
FiTech Go Shift Transmission Controllers
FiTech Go Shift transmission controllers are standalone electronic transmission control kits. If you plan on upgrading your transmission and you're having trouble with the wiring, back up lights, or shift points, the new Go Shift system is for you. Now you can have the luxury of a modern transmission for better response, better fuel economy, and overall reliability thanks to this system.
( 11 )
$599.00
Caspers Electronics Skip Shift Eliminators
Casper Electronics skip shift eliminators bypass the computer-aided gear selector feature (first to fourth gear) on newer GM 6-speed transmissions. They are OBD-II compatible, and installation is a simple unplug and plug-in. Available for late model cars, the Caspers Electronics skip shift eliminators will let you drive your car the way you want.
( 14 )
$17.99
ATP Automatic Transmission Selector Shaft Seals
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 )
$4.99
—
$5.99
Motive Gear Manual Transmission Replacement Shift Forks
Replace your damaged, worn, or missing shift forks with Motive Gear manual transmission replacement shift forks. They're manufactured from high-quality materials and are precision-machined to fit inside of your transmission with no modifications. The forks are available for different positions and transmission models, so order the model designed for your application.
( 41 )
$31.99
—
$61.99
ACDelco Automatic Transmission Shift Shaft Seals
ACDelco offers automatic transmission shift shaft seals for thousands of vehicles from the 1980s and up. These economical steel/rubber replacements are available in different styles for compatibility with over 80 transmission models. Ensure a quality fit and factory-style performance; order the seal recommended for your application.
( 2 )
$5.99
—
$7.99
TransGo Automatic Transmission TFSC Shift Kits
TransGo automatic transmission TFSC SHIFT KIT Valve Body Repair Kits (P/N SKTFSC) fit 1960 and newer Chrysler, Dodge Plymouth, AMC, and Jeep vehicles with both small case 3-speed transmissions (such as the A904, A998, A999, TF6 and 30RH), as well as big case 3-speed transmissions (such as the A727, TF8, 36RH and 37RH) with or without lock-up. Common complaints on these transmission are soft shifts, loss of power on launch, pump bushing burn-up, TC clutch failure, stalls in reverse when hot, converter hub failure, and torque converter drain-back. * Features and benefits: The Shift Kit includes valve body components and modifications designed to deliver short smooth shifts and a better TC clutch apply. There are several innovative components in this kit. For instance, the line-to-converter feed system which helps the unit run cooler and promotes longer TC clutch life. Also included is a TransGo pioneered manual valve to reduce overnight forward and reverse delayed engagement complaints due to torque converter drain-back. Lastly, the kit can be installed with the transmission in the truck. * Corrects/Prevents/Reduces: -- TCC slip or shudder -- Reduces converter drain-back -- Soft shifts -- Loss of power on launch -- Converter hub failure -- Pump bushing failure * Includes: -- USA-made hardened steel manual valve with converter charge in park provision *(fits 1966 an dlater only) -- Mumbly peg (for easy detent spring and ball installation) -- PR valve shim, spring seat and inner spring for line-to-converter feed provision as well as outer spring for increased pressure -- Bypass valve spring -- Bypass ball spring -- Converter regulator valve spring
( 1 )
$30.86
ATI Automatic Transmission Shift Shaft Seals
ATI automatic transmission shift shaft seals are high performance replacements that work exactly as they should. They're located where the shift shaft exits the transmission case to prevent leaks and seal your automatic transmission against dirt and the elements. You get a perfect fit and quality that meets or exceeds OEM specifications from ATI Performance Products. Seals are available for thousands of applications; order the model recommended for your vehicle.
( 6 )
$3.99
—
$8.99
National Bearing Automatic Transmission Selector Shaft Seals
These National Bearing automatic transmission selector shaft seals are designed to keep your transmission sealed up properly. They are manufactured from durable steel and have a rubber insert for a leak-free seal. The selector shaft seals are available to fit most automatic transmission models.
( 3 )
$5.99
JET Skip Shift Eliminators
Jet skip shift eliminators bypass the computer aided gear selector feature (first to fourth gear) on newer GM six speed transmissions. These units are OBDII compatible, and installation is a simple unplug and plug in.
( 35 )
$38.99
ACDelco Automatic Transmission Shift Linkage Bushings
ACDelco GM original equipment automatic transmission shift linkage bushings are GM-recommended replacement components for one or more of the following vehicle systems: automatic transmission/transaxle, and/or manual drivetrain and axles. These original equipment bushings will provide the same performance, durability, and service life you expect from General Motors.
( 1 )
$31.99
Shiftworks Automatic Transmission Shifter Detent Brackets
Shiftworks automatic transmission shifter detent brackets will keep your gear selections on track. These ratchet detent plates determine how your shifter moves from gear to gear to maintain positive shifts from low to drive, upshifting, and down. Shiftworks offers several different styles to upgrade the worn bracket of your factory horseshoe or staple-style shifter, as well as to work with their conversions kits. Don't miss a shift; resolve sloppy shifters with Shiftworks automatic transmission shifter detent brackets.
( 13 )
$133.99
—
$145.99
TCI Trans-Scat Valve Body Kits
TCI Trans-Scat valve body kits offer you two options: you can either have good, solid shifting that's well suited to towing, or you can have competition-style shifting. These kits eliminate slippage and lag, improve fuel economy, extend clutch life, and really improve the 2nd and 3rd gear shifts. In addition to delivering crisper shifting, they allow you to downshift on demand, and most will allow you to hold first gear for extended periods, such as when climbing long hills while towing. All kits give you the full range of normal automatic functions when in "drive."
( 20 )
$95.95
—
$231.95
Richmond Gear Replacement Manual Transmission Internal Shift Arms
If you have a damaged or bent shift arm, these Richmond Gear replacement manual transmission internal shift arms will help get your transmission shifting back to normal. They are available for specific gear positions, so we'll have you covered in the event of a failure.
( 2 )
$79.99
—
$82.99
Timken Automatic Transmission Selector Shaft Seals
These Timken automatic transmission selector shaft seals are designed to keep your transmission sealed up properly. They are manufactured from durable steel and have a rubber insert for leak-free seal. The selector shaft seals are available to fit most automatic transmission models.
( 6 )
$8.99
OMIX-ADA Shifter Boot Retaining Rings
OMIX-ADA offers these shifter boot retaining rings for a variety of applications. Built to the original specifications, these retaining rings are designed to be direct replacements for your factory Jeep pieces.
( 1 )
$15.99
