Availability
Sonnax valve body check balls are lightweight orbs that seal better. Manufactured from tough, wear-resistant imidized plastic, these check balls conform to the separator plate ball seats, creating a good seal. Steel balls are heavy and hard, causing wear on your separator plate seats from repeated high impact, while elastomer rubber ones wear easily, reducing their size and sealing ability. For excellent results from your valve bodies, service them with Sonnax imidized check balls.
( 12 )
$5.67
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$6.18
Worn babbit pump bushings in your GM Powerglide, 350, 400, or Allison AT540 transmission can allow the converter hub and inner pump gear to move off-center, thus causing damage to pump gears and the pump housing crescent. You can replace the worn originals with automatic transmission oil pump bushings from Sonnax. These direct replacements have tighter tolerances for improved fit over OE units, and they're lined with highly wear-resistant PTFE to help maximize the life of the older style and increasingly rare pumps. Order the bushings recommended for your application.
( 2 )
$3.84
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$7.95
Sonnax governor gear kits include nails and a roll pin. A common failure point of your governor is the gear. When you need to replace it, Sonnax governor gear kits will restore timely shifts of your automatic transmission.
( 17 )
$4.53
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$5.22
Sonnax servo release check valve kits are unique solutions. Since the GM 4L60 (700-R4) and 4L60-E Series transmissions were introduced, they have had inadequate metering of 2nd gear band servo release oil resulting in 3-4 clutch pack failure. The 3-4 clutch pack and 2nd gear band are just not properly synchronized. Sonnax servo release check valve kits combine an orifice with a ball check valve to resolve these issues and successfully extend the life of 3-4 clutches, and improve the 2-3 shift feel. Other benefits: * Provides sufficient exhaust so that 3-2 downshifts are smooth * Calibrates 3-4 clutch feed orifice without creating shift concerns
( 4 )
$10.60
Sonnax sun gear bushings will greatly benefit your automatic transmission rebuild. These high-quality bronze and bi-metal wedding band style components are direct OE replacements that help restore the alignment between the front sun gear and input shaft. Order the bushings designed for fitment with your transmission application.
( 4 )
$4.65
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$10.47
Wear at the piston pin bore surface can result in poor shift quality and burnt clutches and bands. Sonnax pinless accumulator piston kits prevent pin bore leakage. They're also longer to stabilize the piston and prevent piston cocking. They feature dual seals to stabilize and completely seal the bore, and steel balls to plug the existing pin bore. Fluid loss through the piston pin bore will no longer be an issue when you invest in Sonnax piston kits.
( 17 )
$8.94
Sonnax retaining rings are stamped from high-strength, roll-tempered steel, providing additional muscle to resist deflection better than mild steel OE retainers. Successful ET racing requires consistent transbrake release; that usually means utilizing stiffer springs—which leads to the need for stronger spring retainers that won't be deflected. Sonnax no-flex reverse spring retainers are small solutions to faster transbrake response times.
( 3 )
$10.99
Sonnax 3rd accumulator check ball and seat sets prevent circuit leaks, stop 3-2/2-3 timing issues, and prolongs the life of the 3-4 clutch. Wear or debris can prevent the ball and seat from correctly sealing the 3-4 apply circuit. Sonnax sets will solve the sealing problems for improved performance.
( 4 )
$9.12
Restore proper shift feel with Sonnax accumulator springs. The replacement piston release springs have the identical performance specifications as the purple OE accumulator springs but are made of high-strength material to ensure lasting spring life and reduce spring relaxation. Order the spring set designed for compatibility with your automatic transmission make and type.
( 5 )
$4.62
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$9.90
Sonnax clutch hub shims allow hub end play adjustment with a mix of various forward clutch components. These 3-shim sets permit you to limit hub end play, which is beneficial when optimizing the high clutch pack stack-up. The Sonnax shims fit between your small wear plate and drum to lift the hub out of the drum--reducing end play between the hub and sun gear flange, while maximizing clutch tooth engagement with the hub splines. This prevents the rear clutch friction disc from dropping off the clutch hub. Reduce and control end play with Sonnax clutch hub shims.
( 2 )
$8.09
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$8.32
Sonnax return springs are available in a variety of styles to assist in your automatic transmission rebuild. Replacement part types include high clutch return springs, pump slide springs, detent springs, reverse clutch return springs, and more. They're machined from quality materials for long-lasting performance, and can be ordered individually or in larger quantities. Select the springs required for your specific transmission application.
( 4 )
$3.38
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$10.00
OE rear stator support bushings have a tendency to wear-out prematurely due to sub-optimal material composition. This wear can lead to bushing failure, loss of correct pressure to the E-clutch, and gear ratio or solenoid codes. Sonnax rear stator support bushings have an upgraded material composition to restore worry-free operation, superior wear characteristics, and eliminate premature deterioration.
( 2 )
$7.16
Properly reducing your transmission endplay to avoid flare, slip, or both requires the use of shims. Sonnax rear reaction carrier support shims are available in a variety of sizes for multiple interior locations to provide you with the ability to reduce rear unit endplay. Tighten things up to proper specifications with the set of Sonnax rear reaction carrier support shims recommended for your transmission application.
Not Yet Reviewed
$7.61
OE front stator support bushings in automatic transmissions tend to wear-out prematurely due to their sub-optimal material composition. Replacement front stator support bushings from Sonnax are made with upgraded materials designed to outperform OE bushings—and provide superior wear characteristics to eliminate early deterioration. Restore critical clearances and resist untimely wear with these quality replacement front stator support bushings from Sonnax. Important note: In some cases it may be necessary to hone the bushing I.D. slightly for proper fit due to stator shaft variations.
( 1 )
$6.37
Sonnax front endplay shims help solve the issue of too much front endplay. Whether it's due to various components wearing over time or the direct result of modifications—front endplay that has strayed from precise specifications can lead to costly repairs and/or replacements. Tighten things up to proper specifications with the set of Sonnax front endplay shims recommended for your transmission application.
Not Yet Reviewed
$6.12
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$7.39
If your GM transmission is showing wear of the bore plug in the forward and reverse abuse valve bores that can allow valuable oil pressure to exhaust, Sonnax forward and reverse abuse bore plugs are the solution. They feature a drop-in design with an increased diameter that restores proper clearance in the valve body and no tools are required for installation. These plugs are used in two locations in the valve body: separating the forward abuse and low overrun valves and separating the reverse abuse and 3-2 downshift valves. Put an end to unnecessary oil loss with Sonnax forward & reverse abuse bore plugs. These products are designed to help resolve: * Delayed reverse * Burned 3-4 clutch and bind-up * Burnt low/reverse clutch * Burned 2-4 band
( 1 )
$8.34
Sonnax 3-4 clutch boost springs offer a low-cost, direct replacement alternative to the OE springs in GM 4L60, 4L60-E, 4L65-E and 4L70-E automatic transmissions. Engineered for the application, the 77763-01 boost springs are precision manufactured from high-quality spring materials.
( 1 )
$9.19
Sonnax thrust bearings are replacements for your worn automatic transmission bearings to aid in smooth operation and noise reduction. The bearings act as a guide to help limit any axial movement which can hinder performance. Manufactured to exceed OE specifications for superior quality even under extreme conditions, order the Sonnax thrust bearings best suited for your application.
( 4 )
$5.99
Sonnax servo piston seals are offered to meet your specific needs and budget. Maybe you don't need a complete seal kit. For those times, Sonnax provides individual items—so you get exactly what you need to service your Powerglide transmission. Sonnax seals deliver a superior, positive seal for renewed no-leak performance.
( 1 )
$1.99
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$10.92
Sonnax thrust washers are designed to handle extreme loads, while maintaining durability for consistent performance in your application. They are available in bronze, PTFE-coated, tri-metal, and more upgraded materials to offer better-than-stock results. Service your automatic transmission carrier with Sonnax replacement hardware.
( 5 )
$5.52
Sonnax pump slide pivot pins are designed as direct replacements for your worn-out components. They're made from through-hardened steel to prevent excessive wear. A worn-out pump slide pivot pin can allow oil to leak past it, resulting in low or high line pressure. These pins help you to overcome that problem, and are available in solid-, grooved-, or punch-styles. Restore the hydraulic integrity of your transmission with the Sonnax pump slide pivot pin designed for your application.
Not Yet Reviewed
$8.11
Noticing some forward slip and/or delayed engagement with your GM automatic transmission? Sonnax accumulator pistons are direct replacements for OE plastic pistons and restore sealing integrity at the pin bore. The aforementioned issues, as well as burnt clutches and bands can be caused by loss of fluid. Deterioration at older aluminum piston pin bores due to repeated reciprocation and/or cracks in plastic accumulator pistons may be the cause. Avoid a costly valve body replacement by ordering a Sonnax accumulator piston.
( 2 )
$7.91
Sonnax automatic transmission case bushings are made to locate the carrier output shaft assembly. These bushings are a direct OE replacement. Sonnax automatic transmission case bushings are made from high-quality materials and is a required part in any high-quality rebuild.
( 14 )
$4.44
The small OE spring steel retainers used to hold the heavy solenoids in the valve body are prone to collapse, allowing the solenoids to wobble in the bore and preventing them from properly controlling the shift processes. Collapsed spring retainers also allow the solenoid to damage the casting at opening of the clutch valve bores. Securely hold the solenoid in place with Sonnax solenoid stabilization retainers. An improved Sonnax design adds 32 percent more surface area to contact the casting/solenoid interface for better support and leverage. Also, the tops of the retainers are rolled over creating a positive stop for the flexible side to land against, furthering the prevention of retainer collapse.
Not Yet Reviewed
$6.99
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