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Sonnax

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Sonnax

4L60E|4L65E Sonnax Boost Valve Kit "Factory Style" .490'' | 77898E-3K

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Now: $39.95

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4L60E|4L65E|4L70E Sonnax 3-2 Control Valve Spring 77754-23

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Now: $9.95

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4L80E #7 Low/Reverse Checkball Seat (1995-UP) 5-Pack

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Now: $39.95

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4L80E 1-2 & 2-3 Shift Valve Spring Kit - HD

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Now: $11.95

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4L80E 3rd & Reverse Checkball Sleeve Kit (1995-UP)

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Now: $42.95

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4L80E 4L85E TCC PR Valve O-Ringed End Plug Kit

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Now: $29.95

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4L80E 4T60 4T65E Planetary Thrust Bearing (Sonnax)

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Now: $29.95

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4L80E 4th Accumulator Repair Kit - Sonnax
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4L80E AFL Filter End Plug & O-Ring Kit

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Now: $13.95

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4L80E Boost Valve Kit (O-Ring Style Pumps)

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Now: $36.95

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4L80E Boost Valve Kit - Sonnax

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Now: $134.95

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Sonnax

4L80E End Plug (0.500'' Bore) 5-Pack
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Sonnax

4L80E HD Stator Suport Bushing (4-Pack)

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Now: $24.95

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4L80E Line Pressure Booster Kit by Sonnax

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Now: $56.95

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4L80E Manual Shift Shaft Kit (1995-UP)

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Now: $54.95

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4L80E Manual Valve - Sonnax
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4L80E Manual Valve Kit - Sonnax
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4L80E O-Ringed End Plug Kit (0.668'' TCC Valve Bore)
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4L80E O-Ringed End Plug Kit (OE Style) 5-Pack
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4L80E Output & Reaction Planetary Rebuild Kit (1999-UP)

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Now: $69.95

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Sonnax

4L60E|4L65E Sonnax Boost Valve Kit "Factory Style" .490'' | 77898E-3K

Early pump design, .490" Dia., Factory style sleeve, no o-rings Dia.: 0.490" Vehicles with a 4L60-E and 4L65-E transmission frequently have poor line rise, which can result in 3-4 clutch, 2-4...

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4L60E|4L65E|4L70E Sonnax 3-2 Control Valve Spring 77754-23

GM 4L60E/4L65E/4L70E 3-2 Control Valve Spring Sonnax Part No. 77754-23 The 3-2 control valve spring in late-model 4L60-E and 4L65-E valve bodies often breaks, and can cause a 3-2 bind and/or...

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Now: $9.95
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4L80E #7 Low/Reverse Checkball Seat (1995-UP) 5-Pack

Vehicles with GM 4L80-E and 4L85-E transmissions commonly exhibit wear in the #7 low/Reverse checkball seat location. This issue is caused by normal movement of the checkball and slight movement of...

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Now: $39.95
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Sonnax

4L80E 1-2 & 2-3 Shift Valve Spring Kit - HD

In 4th Gear, signal A oil force must overpower the 1-2 shift valve spring and opposing signal B pressure in GM 4L80-E and 4L85-E transmissions. If the 1-2 shift valve does not remain fully stroked,...

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Now: $11.95
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4L80E 3rd & Reverse Checkball Sleeve Kit (1995-UP)

4L80-E, 4L85-E 3rd & Reverse Checkball Sleeve KitPart No. 34200-47K Fits units '95-later. Vehicles with '95-later GM 4L80-E and 4L85-E transmissions commonly exhibit wear in the Reverse...

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Now: $42.95
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4L80E 4L85E TCC PR Valve O-Ringed End Plug Kit

O-Ringed End Plug KitPart No. 34200-05K TCC & PR Valves OE end plugs are designed to prevent critical pressure loss by capping the bore, while also functioning as a valve stop. Repetitive...

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Now: $29.95
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4L80E 4T60 4T65E Planetary Thrust Bearing (Sonnax)

34821-01 is a direct replacement for the planetary thrust bearing in listed units. This bearing is known to fail and destory the planet gears. REplace the bearing during a rebuild to...

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Now: $29.95
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4L80E 4th Accumulator Repair Kit - Sonnax

4L80-E, 4L85-E 4th Accumulator Repair KitPart No. 34805-01K Repeated reciprocation of the 4th accumulator pistons in GM 4L80-E and 4L85-E units causes wear at the piston/pin interface...

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Sonnax

4L80E AFL Filter End Plug & O-Ring Kit

4L80-E, 4L85-E AFL Filter End Plug & O-Ring KitPart No. 34994-17K GM 4L80-E and 4L85-E transmissions may have 2nd gear starts and no upshifts, which can be accompanied by trouble codes...

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Now: $13.95
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4L80E Boost Valve Kit (O-Ring Style Pumps)

Boost Valve KitPart No. 34200-01K O-Ring style. Kit can be retrofit to back to '89 units. See instructions for details. Common problems in vehicles with GM 4L80-E and 4L85-E transmissions are...

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Now: $36.95
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Sonnax

4L80E Boost Valve Kit - Sonnax

Common problems in vehicles with GM 4L80-E and 4L85-E transmissions include uncontrollable line rise (upward of 500 psi), high line pressure in Reverse, broken direct clutch drums and/or broken cases...

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Now: $134.95
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Sonnax

4L80E End Plug (0.500'' Bore) 5-Pack

Specs Dia.: 0.500" Sonnax Part Number: 34994-11 Symptoms: No converter apply 1-2, 2-3, 4-5 Flares

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4L80E HD Stator Suport Bushing (4-Pack)

GM 4L80-E and 4L85-E units may display no converter lockup or codes 68, 39, 1870 or P0741. Imbalance of torque converter clutch apply oil through the front stator support bushing contributes to this...

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Now: $24.95
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4L80E Line Pressure Booster Kit by Sonnax

4L80E 4L85E Transmission Line Pressure Booster Kit Sonnax Part Number: 4L80E-LB1 Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves...

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Now: $56.95
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4L80E Manual Shift Shaft Kit (1995-UP)

4L80-E, 4L85-E Manual Shift Shaft KitPart No. 38511-04K 1995 & later with external neutral safety swich Long style Zinc Plated Contents Shaft Flange Nuts (2)

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Now: $54.95
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4L80E Manual Valve - Sonnax

4L80-E, 4L85-E Manual ValvePart No. 34994-16 The OE manual valve in GM 4L80-E and 4L85-E transmissions is prone to bending due to its length and relatively narrow spools. Once bent, the...

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4L80E Manual Valve Kit - Sonnax

4L80-E, 4L85-E Manual Valve KitPart No. 34994-16K The OE manual valve in GM 4L80-E and 4L85-E transmissions is prone to bending due to its length and relatively narrow spools...

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Sonnax

4L80E O-Ringed End Plug Kit (0.668'' TCC Valve Bore)

4L80-E, 4L85-E O-Ringed End Plug KitPart No. 34994-14K Fits .668" dia. bores Symptoms: No converter apply 1-2, 2-3, 4-5 Flares Contents: End Plugs (5) O-Rings (5)

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Sonnax

4L80E O-Ringed End Plug Kit (OE Style) 5-Pack

4L80-E, 4L85-E O-Ringed End Plug Kit - PACK OF 5Part No. 34200-05K TCC & PR Valves OE end plugs are designed to prevent critical pressure loss by capping the bore, while also...

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Sonnax

4L80E Output & Reaction Planetary Rebuild Kit (1999-UP)

The output and reaction planetary pinion assemblies in '99-later 4L80-E transmissions frequently wear out and must be rebuilt or replaced. New replacement assemblies can be costly and the...

MSRP:

Now: $69.95
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