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ACDelco offers transmission bellhousings for a wide range of vehicles from the 1990s and up. Built from aluminum, these GM-recommended replacements deliver the quality and durability of original equipment, plus a factory fit and solid performance. The bellhousings are available for nearly two dozen transmission models. Order the unit designed for your application.
( 8 )
$274.99
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$287.99
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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 )
$356.54
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These TCI transmission Master Racing overhaul kits are designed for racers who maintain their own transmissions. They contain parts that are required when freshening up an existing competition transmission. You'll receive the high performance filter, clutches, steels, seals, gaskets, and bushings normally replaced during a rebuild. In addition, kits for late model GM overdrive transmissions also include a new performance band.
( 58 )
$251.95
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$573.95
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If you're looking for an easy upgrade to your automatic transmission, Sonnax Servo piston kits may be the answer. The improvement in shift quality is an immediate and noticeable value. These direct replacement kits will help to eliminate a bit of a "sloppy" gear performance caused by faulty OEM servo units. With all necessary rings and seals to prevent leakage and handle higher pressure, Sonnax servo pistons can be your link to greater band apply force. Choose the kit that matches your vehicle specs, then expect faster and firmer shifts!
( 30 )
$352.46
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Sonnax 10-clutch drum kits are optimized for Powerglide performance applications. Using the patented Sonnax 10-clutch drum system, the drum and piston accept 10 frictions and 10 Kolene steels, increasing lockup surface to allow significantly more torque than modified OE drums. The drum features a piston bore that is .060 in. deeper for greater piston travel. Kits include: * Complete 10-clutch drum kit with all related parts, including installed PTFE-coated bushing * Includes ten .060 in. frictions and ten .060 in. thick, 12-tooth Kolene steels * Excess material removed from high-strength, cast steel drum to reduce rotating mass * 6061 forged aluminum piston will not crack at high operating pressure like cast pistons * Forged chromoly steel clutch hub with lightening holes
( 1 )
$490.36
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Sonnax heavy-duty remanufactured valve bodies are built to overcome chronic shift and converter clutch apply complaints. It provides firmer shifts and a moderately increased pressure curve to improve performance, especially in truck and towing applications. Numerous Sonnax valve upgrades are included to restore hydraulic clearances that lead to shift complaints, clutch distress, converter complaints and codes, solenoid issues and pressure problems. Line pressure rise has been moderately increased to overcome shift complaints, delayed engagements, and to increase holding power to the clutches. To guarantee the highest level of operational performance, this remanufactured valve body is tested on state-of-the art equipment to verify that solenoid feed, clutch, converter, and line pressures match or exceed OE specifications. Choose your preferred kit packaged for your transmission. The valve body includes the following: * Oversized TCC regulator valve and sleeve, and limit valve spring for firmer TCC application * O-ringed bore plugs and abuse plugs * New accumulator control valve and sleeve with spring * Oversized AFL line up * New forward accumulator piston and seal * New pressure switch manifold * New EPC solenoid * New TCC PWM solenoid Kit contents: * Remanufactured valve body * Separator plate * Upper case gasket plate * Lower valve body gasket plate * 1-2, 3-4 accumulator springs * EPC solenoid harness adapter for 2003 to later units * Sonnax line pressure booster kit
( 3 )
$372.32
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Main shaft failure is a common problem in performance and heavy-duty GM TH400, 4L80-E and 4L85-E units. Sonnax replacement heavy-duty main shafts are manufactured from high-strength 300M with proprietary heat treatment and post heat-treat processing for exceptional performance, durability and value. These shafts are recommended for applications up to 1,000 hp. Additional details: * Advanced torsional design with spline and cross hole refinements for additional strength * Direct replacement for OE shafts
Not Yet Reviewed
$425.28
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ACDelco GM Genuine Parts automatic transmission clutch housings are a factory-recommended replacement component. They will provide the same performance, durability, and service life you expect from General Motors. Order the clutch housing designed for your vehicle application.
( 4 )
$465.99
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Broken clutch drum? Experiencing no forward engagement or slipping in 1st, 2nd, and 3rd gear? Sonnax Smart-Tech forward clutch drums offer the solution to restore proper gear engagement and hold. Their one-piece forged steel construction provides increased strength and durability over the OE-stamped drum. They also feature an increased groove depth to provide additional ring support.
( 6 )
$260.00
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In certain applications there is no way to pilot a reamer to repair a worn valve body, forcing rebuilders to purchase new ones. This patented self-aligning fixture with specially designed tool kits allows these valve bodies to be repaired. The fixture provides an external rigid pilot bore for the reamer and guide pin. The self-aligning feature allows the fixture to be used on multiple valve bodies and valve bores. The fixture base is large enough to provide ample support for the valve body. Various transmissions locate some valve bores in the pump body rather than the valve body. These larger pump bodies do not readily fit onto the standard VB-FIX base plate. Sonnax offers an oversized pump base plate, VB-06, that allows large passenger vehicle pump bodies to be easily mounted and clamped to the VB-FIX for repair. Additional notes: * Patented, unique self-aligning device produces consistent, reliable results and eliminates the potential for reaming failures * Special tool kits have been designed to service a specific valve train bore, and must be used in conjunction with the valve body reaming fixture VB-FIX. Part numbers for these kits begin with an "F-" to distinguish them from the traditional Sonnax tool kits that can be used as standalone tools. * Contents: -- Base plate standard -- Clamp mounting plate -- Clamp plate round -- Outer races (2) -- Inner race -- Studs (3) threaded -- Washers (3) flat -- Wing nuts (3) -- Socket cap screws (4)
Not Yet Reviewed
$252.99
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ACDelco GM Genuine Parts offers transmission clutch kits for a variety of muscle and sports cars, such as Corvettes and Camaros. These OE replacements include clutch disc and pressure plate designed for your specific vehicle. The parts are engineered and tested to rigorous General Motors standards. Order the kit recommended for your application.
Not Yet Reviewed
$432.99
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$508.99
Summit Bucks
Sonnax Super-Hold servo kits offer increased apply area over the OEM servo for more holding force between shifts. They are manufactured from anodized aluminum and include mounting seals and hardware for your specific transmission model. Their improved seal design will conserve pump volume.
( 25 )
$292.41
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ACDelco GM Genuine Parts includes all the automatic transmission rebuild components you need to return your tranny to optimum performance. They are designed, engineered, and tested to rigorous standards, and are backed by General Motors. From the smallest to the biggest pieces, you can trust reliable ACDelco parts to restore, repair, and renew your GM.
( 12 )
$304.99
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Transmission valve bodies only last so long. When it's time for replacement, you can spend extra green and get new, or buy Sonnax remanufactured valve bodies. To eliminate separator plate cracking or cross-leaking, Sonnax adds a 2-3 accumulator support plate before remanufacturing. Each core's disassembled, cleaned, updated, tested, and parts are replaced as necessary. These direct replacement units are electronically and hydraulically tested and include lockup and shift solenoids. Save some green, while still receiving premium parts, with Sonnax Remanufactured valve bodies.
( 2 )
$349.71
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ACDelco GM Genuine Parts clutch master cylinders are designed, engineered and tested to rigorous standards, and are backed by General Motors. These true OE parts are specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle, promising the correct fit, an easier install, and the expected performance. For optimal operation, safety, and confidence on the road, service your GM with the parts it came with—ACDelco clutch master cylinders.
( 15 )
$286.99
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No weak link! Sonnax heavy-duty one-piece input shafts are custom-forged from one solid piece of ultra-high-strength 300M steel. Much better than the weak OE 2-piece shaft/hub design, this single piece delivers a more robust build that will work hard longer. With durability and performance features which are second to none; your only choice should be Sonnax heavy-duty one-piece input shafts.
Not Yet Reviewed
$440.14
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$454.61
Summit Bucks
The ideal GM TH400 upgrade for any power level, Sonnax heavy-duty forward drums (34554-01) feature a unique combination of high-strength, light weight, and a cutting-edge design to optimize transmission performance. Racing applications quickly push the heavy, cast-iron OE drum over its limits, with failure most common at the weak point where the shaft and drum connect. The problem can be addressed with a larger spline and lighter-weight aftermarket aluminum drum—but durability becomes a huge issue with wear of the clutch splines, shaft spline connection, and seal ring bore. To dramatically reduce weight and deliver the ultimate in reliability, the Sonnax high-strength, chromoly steel drum is custom-engineered with several lightening features for a low rotating mass. It weighs 3 lbs. less than the OE drum and is just 3 oz. heavier than a common aluminum drum. Weight is reduced carefully, without compromising strength, by ribbing the front of the drum, adding clutch splines (28 vs. 14) and lightening holes, plus reducing the diameter inner section of the drum at the middle seal ring area. This versatile drum upgrade has an oversized 28-tooth shaft-to-drum spline and can be used with a variety of input shaft styles. This includes Sonnax 1 in. diameter, 30-spline heavy-duty input shaft 30280-02, Sonnax 1 1/8 in. diameter, 35-spline big input shaft 35280-02, and other aftermarket shafts with 28-spline connection between shaft and drum: * Ultra-modern drum delivers both high-strength and light weight for unrivaled performance at any power level * Compatible with Sonnax and other aftermarket 28-spline input shafts * Optimized for use with rubber clutch separators for applications with clean neutral setups * Clutch spline major diameter is reduced slightly, and two sets of full-length clutch splines added to back up clutch separators * Lightening holes correspond to input speed sensor locations in aftermarket cases for more accurate converter and shift data * Middle seal is eliminated—an aluminum clutch volume spacer kit 34554-11K is available separately for applications in which clutch fill/drain time may be a concern * Sonnax high-RPM checkball capsule 57510-01 is installed to eliminate pressure drop at high (5500+) RPM, a common problem with OE and other aftermarket checkballs
Not Yet Reviewed
$358.80
Summit Bucks
Sonnax torque converter conversion kits are designed to upgrade the existing torque converter for improved performance characteristics like better acceleration, increased power, and smoother shifting. Many conversion kits focus on changing the stall speed, which is the engine rpm at which the torque converter fully engages, allowing for more aggressive launches or better towing capability depending on the chosen stall speed. Some kits include modifications to improve the lock-up function of the torque converter, leading to better fuel economy at cruising speeds by eliminating slippage. The torque converter conversion kits by Sonnax come with various internal component options, allowing fine-tuning to match your vehicle's specific needs and your driving style.
Not Yet Reviewed
$328.58
Summit Bucks
Sonnax knows you want your transmission to shift like a dream. Their automatic transmission bands are extra-wide intermediate bands suitable for heavy-duty, commercial, and 4x4 vehicles. These drop-in replacements provide 15 percent more holding capacity and feature a 60 percent thicker case anchor, decreasing the chance of band failure under severe conditions. (Note: The red-lined version of these Alto bands is designed for high-torque street racing applications. The Kevlar®-lined version is too aggressive for street use and best suited for high performance racing applications.)
( 8 )
$267.47
Summit Bucks
Clearance
ACDelco new torque converters are GM OE replacements that offer the same performance, durability, and service life you've come to expect. With quality steel housings and internal components, ACDelco torque converters are sure to deliver the performance and fit needed for your vehicle.
( 1 )
$568.99
$314.50
Summit Bucks
ACDelco GM Genuine Parts automatic transmission clutch steel plates are manufactured to be an exact replacement for your vehicle. Genuine OE parts are recommended in order to deliver peace of mind that the fit, form, and function is of the highest standards. Get the factory-style components you need from ACDelco GM Genuine Parts. Order the clutch steel plate model designed for your vehicle application.
( 1 )
$259.99
Summit Bucks
Sonnax 10-clutch drums are optimized for Powerglide performance applications. Using the patented Sonnax 10-clutch drum system, the drums accept 10 frictions and 10 steels, increasing lockup surface to allow significantly more torque than modified OE drums. They feature a piston bore that is .060 in. deeper for greater piston travel than was available from earlier Sonnax 10-clutch drums. Features include: * Drum holds .060 in. frictions and .060 in. thick steels (10 each) * Excess material removed from high-strength, cast steel drum to reduce rotating mass * Accepts 24 or 12-tooth steels * Use with Sonnax clutch pistons and 10-clutch hubs with lightening holes Note: Sonnax 10-clutch drums and pistons should only be used as matched parts.
( 1 )
$374.40
Summit Bucks
TCI Maximizer rebuild kits are ideally suited for off-road, towing, and other severe-duty applications. Each kit contains gaskets, seals, new premium-quality frictions, steels, a high-volume filter, and a drain plug. Also included are valve body recalibration modifications, which provide crisper shifts without the harsh feel found in kits designed for racing. Durability is improved because less heat is generated per shift than is associated with the OEM shift characteristics. TCI Maximizer rebuild kits also increase the torque capacity of the transmission to make towing or off-roading a breeze.
( 18 )
$333.95
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$374.95
Summit Bucks
Sonnax 10-clutch drum, hub and piston kits are optimized for Powerglide performance applications. Using the patented Sonnax 10-clutch drum system, the drum and piston accept 10 frictions and 10 Kolene steels, increasing lockup surface to allow significantly more torque than modified OE drums. The drum features a piston bore that is .060 in. deeper for greater piston travel. Sonnax 10-clutch drum, hub and piston kits include shims to make installation easy.
( 2 )
$494.00
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