• 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
• 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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• 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

When the GM 4L60-E family of transmissions evolved from the 700-R4, the overrun clutch is no longer applied in 1st and 2nd when accelerating from a stop in D3 shif...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Requires ’87-later housing, snap ring and ring gear and ’91-later 3-4 apply ring stamped with number “7”, measuring 3.671–3.682" in height.

A thin, weak backing plate is the leading cause of 3-4 clutch distortion and burnup – a pervasive problem in listed GM transmissions.  Even the thickest OE backing...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Recommended clutch pack for Smart-Tech input housing kits.

Sonnax Smart-Tech clutch kit 77734-01K includes the eight .067" BorgWarner high energy frictions and seven Lindered steels recommended for use with Sonnax Smart-Te...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E

The overrun clutch hub found in GM 4L60 (700R4), 4L60E, 4L65E and 4L70E units is highly susceptible to cracking and breaking in applications such as autocross.  ...Read More

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• 245mm LU Euro (5L40-E)
• 258mm LU (4L60-E, 5L40-E)
• 258mm LU (4T65-E)
• JF011E (RE0F10A)
• ZF5HP19 (Captive Clutch)

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Fits '82-later

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• 4L60-E, 4L65-E, 4L75-E (300mm), Multi-Plate Performance Converter
• Replacement for hubs in performance converter kits GM-RK-495, GM-RK-495WC, GM-RK-498 and GM-RK-498WC.

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

Sonnax 2nd gear super hold servo kit 77911-03K for GM 4L60 (700-R4), 4L60-E, 4L65-E and 4L70-E transmissions delivers 18% more apply area than the “Corvette” servo...Read More

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• 245mm LU Euro (5L40-E)
• 258mm LU (4L60-E, 5L40-E)
• 258mm LU (4T65-E)
• JF011E (RE0F10A)
• ZF4HP22, A999
• ZF5HP19 (Captive Clutch)

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• 245mm LU Euro (5L40-E)
• 258mm LU (4L60-E, 5L40-E)
• 258mm LU (4T65-E)
• 265mm LU (4T60-E, 4T80-E)
• 6R60, 6R75W

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

Limitations of the GM 4L60 series OE input housing are the root cause of 3-4 burnup in performance applications. The weak OE backing plate flexes during clutch app...Read More

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

Limitations of the GM 4L60 series OE input housing are the root cause of 3-4 burnup in performance applications. The weak OE backing plate flexes during clutch app...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Rear Planetary

Sonnax pinion gear 77731-01 is a direct replacement for worn or damaged OE pinion gears in rear planetaries in listed GM transmissions. Helical pinion gear crafted...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Fits 4-pinion rear planetary.

Sonnax pinion needle roller 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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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Fits 4-pinion rear planetary.

Sonnax batwing washer 77731-05 is a direct replacement for worn or damaged OE washers in listed GM transmissions. Made from solid bronze, Sonnax washers eliminate ...Read More

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

Sonnax 2nd Gear "Corvette" ratio servo kit 77701-04K provides increased apply area resulting in improved holding power for firmer 1-2 and 3-4 shifts in 4L60 (700-R...Read More

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• 4L60
• 4L60-E
• 4L65-E
• 4L70-E
• Fits 4-pinion rear planetary.

Sonnax pinion pin 77731-02K is a direct replacement for worn or damaged OE pinion pins in rear planetaries in listed GM transmissions. Hollow design features lube holes to reduce planetary burn-up.

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• 258mm LU (4L60-E, 5L40-E)
• 258mm LU (4T65-E)
• AX4S, AX4N (4F50N)
• CD4E, 9-1/4" (3.0L & 2.3L)
• JF011E (RE0F10A)
• ZF4HP22, A999

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