TH400, 4L80-E, Muncie M20, 21 & 22, BorgWarner T10

Sonnax T3-3-5571HP forged chromoly performance slip yoke is an excellent upgrade over factory style transmission yokes, adding strength and durability at an afford...Read More

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TH400, 4L80-E, Muncie M20, 21 & 22, BorgWarner T10

Sonnax T3R-3-9161HP performance forged slip yoke is an excellent upgrade over factory style transmission yokes, adding strength and durability at an affordable pri...Read More

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• 4L65-E
• 4L70-E
• For 5-pinion rear planetary assemblies.

Sonnax pinion needle roller 77732-03 is a direct replacement for worn or damaged OE needle rollers.  Sonnax pinion needle rollers are specifically toleranced for use with matching pins and gears.

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• 4L80-E
• 4L85-E
• TH400
• In 4L80-E units, part can be used in either early or late-model drums.

Wear at the direct clutch drum bore in GM TH400, 4L80-E and 4L85-E transmissions allows 3rd and Reverse apply oil to exhaust. This oil leakage can result in direct...Read More

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• 200-4R
• 4L80-E
• 4L85-E
• TH200
• 4L80-E/4L85-E: Fits OD planet/fwd drum; 200: Fits front internal gear-to-carrier

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• 4L80-E
• 4L85-E
• TH400
• Updated 3-tang style shim fits all units, including '97-later 4L80-E and 4L85-E units.

It is often difficult to reduce front unit endplay on GM TH400 or 4L80-E and 4L85-E units with excessive spline wear. Normal component wear allows excess forward a...Read More

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For roller bearing tail housing; TH400, 4L80-E; Powerglide with 32-tooth spline; G-Force GSR manual transmission

Slip yokes found in many common applications run on a bushing inside the transmission tail housing. High-horsepower builds often use a roller bearing instead, so u...Read More

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• 4L80-E
• TH400
• For output and reaction planetaries, fits all TH400 and '98-earlier 4L80-E with .750" wide pinion gears.

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• 4L80-E
• 4T65-E
• TH400
• For output and reaction planetaries, fits all TH400, 4T65-E and '98-earlier 4L80-E with .750" wide pinion gears.

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• 4T60
• 4T60-E
• Koyo (OE Manufacturer)

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• 4T60
• 4T60-E

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• 4T60
• 4T60-E

Sonnax has designed a replacement thrust washer 75890-30 for differentials with 2-3/16" O.D. washers when these OE washers get worn or destroyed. Shims not a...Read More

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• 4T60
• 4T60-E
• '96-Earlier with steel valve

In GM 4T60 and 4T60-E units, the TCC apply valve acts as the switch valve for converter apply and release. The TCC regulator valve controls TCC apply pressure. Bot...Read More

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• 4T60
• 4T60-E
• High Ratio, .199" dia. small spool

Vehicles with GM 4T60 or 4T60-E transmissions often exhibit such problems as poor line rise, soft shifts, poor Reverse boost, and/or 2nd and 3rd clutch distress. T...Read More

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• 4T60
• 4T60-E
• High Ratio, .293" dia. small spool

Vehicles with GM 4T60 or 4T60-E transmissions often exhibit such problems as poor line rise, soft shifts, poor Reverse boost, and/or 2nd and 3rd clutch distress. T...Read More

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• 4T60
• 4T60-E
• '96-Earlier with steel valve

In GM 4T60 and 4T60-E units, the TCC apply valve acts as the switch valve for converter apply and release. The TCC regulator valve controls TCC apply pressure. Bot...Read More

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• 4T60
• 4T60-E
• High Ratio

Vehicles with GM 4T60 or 4T60-E transmissions often exhibit such problems as poor line rise, soft shifts, poor Reverse boost, and/or 2nd and 3rd clutch distress. T...Read More

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• 4T60
• 4T60-E
• This kit will replace the 1-2 or reverse servo in 4T60 applications. In the 4T60-E, this will replace the reverse servo only

Normal operation takes it toll on the 1-2 or reverse servo bore in 4T60 & E units as repeated oscillation eventually wears or scores the bore. Sonnax has desig...Read More

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• 4T60
• 4T60-E
• Fits '84-later

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