• 4L60-E
• 4L65-E
• 4L70-E
• Fits '07-later units.

Sonnax front planet to reaction shaft thrust bearing 74238-01 is an OE replacement for GM 4L60-E, 4L65-E and 4L70-E units.

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• 4L60-E
• 4L65-E
• 4L70-E
• Fits 5-pinion front planetary.

Sonnax PTFE-coated batwing washer 74582-01K is a direct replacement for worn or damaged OE washers in GM 4L60-E, 4L65-E and 4L70-E transmissions.

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• 4L60-E
• 4L65-E
• 4L70-E
• Fits '94-later units.

The Sonnax Performance Pack for GM 4L60-E, 4L65-E and 4L70-E transmissions is a must-have for any heavy-duty vehicle and the very best foundation for high-performa...Read More

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• 4L60-E
• 4L65-E
• 4L70-E
• Fits 4WD/AWD applications only.

Output shaft failure is common as power levels are increased in GM 4L60-E, 4L65-E and 4L70-E units. Sonnax heavy duty output shaft 74678S-HD for 4WD/AWD units is  ...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• .63 Ratio

With its .63 ratio, Sonnax 2nd Gear servo kit 77701-02K is an ideal option when upgrading GM 4L60, 4L60-E and 4L65-E applications to improve shift feel without ris...Read More

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• 4L60-E
• 4L65-E
• 4L70-E
• Fits '99-later

Sonnax captured front planetary bearing 77747-01 is a high-quality, direct replacement for the .199" thick, silver- and black-colored bearing found in '99-later GM...Read More

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• 245mm LU (3T40, 3L30, TH200C, 4T60-E, 4L60 & E:S-10 only)
• 258mm LU (4T65-E)
• 6R60, 6R75W
• F10 FWD
• F3A
• RN3F01A (DA-10;DA10)
• TH125 NLU

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E

The GM 4L60, 4L60-E, 4L65-E and 4L70-E input drum assembly is known to crack and strip out splines where the input shaft is pressed into it (where the overrun pist...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E

In GM 4L60, 4L60-E, 4L65-E and 4L70-E units, bulky aftermarket shells always fall short when splines continue to strip and the shells break under stress. A chronic...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E

Sonnax oversized servo pin kit 77787-03K is for use in reconditioned GM 4L60, 4L60-E, 4L65-E and 4L70-E case bores. Matching the longest OE pin length, this chromo...Read More

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• 4L60-E
• 4L65-E
• 4L70-E
• Fits in either of two locations.

Continuous oscillation of the Forward and Reverse abuse valves in GM 4L60-E, 4L65-E and 4L70-E units creates bore wear, allowing clutch feed pressure to exhaust. T...Read More

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• 4L60-E
• 4L65-E
• 4L70-E

A worn valve or valve body bore can result in incorrect pressures in the transmission, which may lead to poor performance or failure of the transmission. With the ...Read More

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• 4L60-E
• 4L65-E
• 4L70-E
• Fits 2WD and Corvette applications only.

Output shaft failure is common as power levels are increased in GM 4L60-E, 4L65-E and 4L70-E units. Sonnax heavy duty output shaft 74678L-HD for 2WD and Corvette u...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E

The GM 4L60, 4L60-E, 4L65-E and 4L70-E input drum assembly is known to crack where the input shaft is pressed into it (where the overrun clutch rides). Sonnax offe...Read More

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• 4L60-E
• 4L65-E
• 4L70-E
• Replaces OE sleeves with "AX" code only.

Various shift concerns are common in vehicles equipped with GM 4L60-E, 4L65-E or 4L70-E transmissions.  This can often be caused by wear at the accumulator valve s...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Fits '88-later units.

Sonnax 77763-01 boost springs offer a low cost, direct replacement alternative to the OE springs in GM 4L60, 4L60-E, 4L65-E and 4L70-E units. Engineered for the ap...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E

The original GM 4L60, 4L60-E, 4L65-E, 4L70-E rear stator bushing comes in narrow and wide versions in both common bronze and harder aluminum type materials. All ve...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Red Material

Ideal for 4x4, heavy duty and commercial use in GM 4L60, 4L60-E, 4L65-E and 4L70-E units, Sonnax extra wide intermediate band 77700-01 is 15% wider (.34") than the...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E

Sonnax 4th Gear super hold dual servo kit 77767K features 40% more apply surface area for greater holding power in GM 4L60 (700-R4), 4L60-E, 4L65-E and 4L70-E unit...Read More

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• 4L60-E
• 4L65-E
• 4L70-E

The low overrun valve directs line pressure to the reverse input and low and reverse clutches. As the bore deteriorates, line pressure at the inboard location cros...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Kevlar^® Material

Ideal for 4x4, heavy duty and commercial use in GM 4L60, 4L60-E, 4L65-E and 4L70-E units, Sonnax extra wide intermediate band 77700-01K is 15% wider (.34") than th...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Universal kit, fits all years and all input carrier styles.

GM 4L60E series reaction shafts used in high-torque applications — and especially in heavy vehicles — suffer from two common issues that require replacement: The s...Read More

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• 4L60-E
• 4L65-E
• 4L70-E
• For units with 300mm converter, non-reluctor style shaft.

Input shaft failure is a common problem in GM 4L60-E, 4L65-E and 4L70-E transmissions as power levels are increased. Sonnax heavy duty input shaft 77773-11SB for 3...Read More

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• 4L60-E
• 4L65-E
• 4L70-E

In GM 4L60-E, 4L65-E and 4L70-E units, it is common for the plastic Forward accumulator piston to wear or crack and older aluminum piston bores to wear from repeat...Read More

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• 4L60-E
• 4L65-E
• 4L70-E
• For units with 300mm converter, reluctor-style shaft.

Input shaft failure is a common problem in GM 4L60-E, 4L65-E, 4L70-E units as power levels are increased. Sonnax heavy duty input shaft 77733-12SB for 300mm torque...Read More

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