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You are here: Home > SONNAX Valves and Tools > General Motors > 4L80E Transmission
4L80E transmission parts
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34301-078 TH400, 4L80E forward clutch drum Selective washer.078
34301-078 TH400 4L80E Forward clutch drum selective washer.078" (1.981mm).
This washer takes up excessive play caused by worn hard parts.
Restores sealing ring position in the forward drum. 5 per bag.
More Information

Competitors Price $14.26
Your Cost $12.46
You Save $1.80! In Stock!
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34298-078 TH400, 4L80E Forward clutch hub selective washer .078
34298-078 4L80E Forward clutch hub selective washer.078" (1.981mm).
This washer takes up excessive play caused by worn hard parts. Restores sealing ring position in the forward drum. 5 per bag. More Information

Competitors Price $26.78
Your Cost $23.92
You Save $2.86! In Stock!
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34301-094 TH400 4L80E Forward Clutch Drum Selective Washer .094
34301-094 TH400 4L80E forward clutch drum selective washer .094" (2.387mm).
This washer takes up excessive play caused by worn hard parts. Restores sealing ring position in the forward drum. 5 per bag.

Competitors Price $14.26
Your Cost $12.38
You Save $1.88! In Stock!
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34200-03K 4L80E OEM style boost valve
34200-03K 4L80E OEM style boost valve
Restores line pressure boost and prevents the buzzing noise.

Competitors Price $19.75
Your Cost $16.69
You Save $3.06! In Stock!
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34200-01K 4L80E boost valve and sleeve kit with o-rings
34200-01K 4L80E boost valve and sleeve kit with o-rings
This kit includes 1 boost valve, 1 boost sleeve, 2 O-rings and 1 balance plug with o-ring. Restores line pressure boost.


Competitors Price $18.57
Your Cost $16.59
You Save $1.98! In Stock!
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SC-4L80E Sure Cure transmission reconditioning kit.
SC-4L80E 4L80E Sure Cure transmission reconditioning kit.

Competitors Price $107.10
Your Cost $85.68
You Save $21.42! In Stock!
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34805-01K 4L80E 4th Accumulator Bore Repair Sleeve Kit.
34805-01K 4L80E 4th Accumulator Bore Repair Sleeve Kit.
Repair the damaged accumulator bore.

Competitors Price $33.10
Your Cost $28.99
You Save $4.11! In Stock!
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OR-014-25 AOD, 4L80E O-Ring service pack for SX34200-03K and SX76989K.
OR-014-25, AOD, 4L80E O-Ring service pack for SX34200-03K and SX76989K.
SONNAX® OR-014-25, AOD, 4L80E O-Ring service pack for SX34200-03K and SX76989K (25 Per bag).

Competitors Price $6.10
Your Cost $4.79
You Save $1.31! In Stock!
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34994-16K 4L80E Manual valve kit
34994-16K 4L80E Manual valve kit
More Information

Competitors Price $43.45
Your Cost $38.75
You Save $4.70! In Stock!
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34994-17K 4L80E Manual valve end plug.
34994-17K 4L80E Manual valve end plug.
This kit does not contain the manual valve.
More Information

Competitors Price $6.05
Your Cost $4.75
You Save $1.30! In Stock!
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34200-14K 4L80E line to lube pressure regulator valve kit
34200-14K 4L80E line to lube pressure regulator valve kit
This valve allows regulated flow to the torque converter charge
& lube circuit at idle, while preventing TC drain back and loss if pump prime.

Competitors Price $57.33
Your Cost $52.36
You Save $4.97! In Stock!
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34821-01 4L80E Overdrive planetary bearing.
34821-01 4L80E Overdrive planetary bearing
1.802" outside diameter X 1.134" inside diameter X .165" thick.
This bearing fits inside of the planatery, pinion removal required for replacement
More Information

Competitors Price $7.77
Your Cost $6.58
You Save $1.19! In Stock!
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34006-05 TH400, 4L80E rear unit endplay shim 1964-on
34006-05 TH400, 4L80E rear unit endplay shim 1964-on
Shims are used for setting output shaft and planetary endplay.

Competitors Price $5.68
Your Cost $5.02
You Save $0.66! In Stock!
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34200-05K 4L80E TCC & pressure regulator valve end plugs, 5 Per bag
34200-05K 4L80E TCC & pressure regulator valve end plugs, 5 Per bag.
Usually Ships in 24 Hours

Competitors Price $9.46
Your Cost $7.94
You Save $1.52! In Stock!
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34200-09K 4L80E boost valve outer sleeve, (Does not include the inner valve)
34200-09K 4L80E boost valve outer sleeve, (Does not include the inner valve)
This is a direct replacement part. Usually Ships in 24 Hours

Competitors Price $6.59
Your Cost $5.53
You Save $1.06! In Stock!
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34200-10K 4L80E self regulating boost valve kit
34200-10K 4L80E self regulating boost valve kit
Prevents damage caused by excessive line pressure.
This is a direct replacement part, no machining required.
More Information

Competitors Price $50.92
Your Cost $45.45
You Save $5.47! In Stock!
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34200-16K 4L80E actuator feed limit valve kit
34200-16K 4L80E actuator feed limit valve kit
Prevents wrong gear starts, solenoid codes, clutch and band failure.
Tool 77754-TL is also required. Machining required.

Competitors Price $36.58
Your Cost $31.49
You Save $5.09! In Stock!
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34203-01K 4L80E Inner Stator Support Sleeve.
34203-01K 4L80E Inner Stator Support Sleeve.
No Machining Required.

Competitors Price $21.67
Your Cost $18.06
You Save $3.61! In Stock!
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34910-S-25 4L80E Seal Kit for 34994-03K.
34910-S-25 4L80E seal kit for 34994-03K.
25 Per bag.

Competitors Price $10.48
Your Cost $8.73
You Save $1.75! In Stock!
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34994-01K 4L80E Torque converter clutch regulator valve kit.
34994-01K 4L80E Torque converter clutch regulator valve kit.
Prevents torque converter clutch shudder & CODE 68.
Restores torque converter apply pressure.
This is a direct replacement part, no machining required.

Competitors Price $20.09
Your Cost $17.74
You Save $2.35! In Stock!
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34994-14K 4L80E .684
34994-14K 4L80E .684" TCC valve plug with o-rings.
Provides better sealing than OEM end plugs. 5 Per bag.

Competitors Price $9.42
Your Cost $8.19
You Save $1.23! In Stock!
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34994-S-25 4L80E Seal Kit for 34994-01K. 25 Per bag.
34994-S-25 4L80E Seal Kit for 34994-01K. 25 Per bag.

Competitors Price $13.86
Your Cost $11.55
You Save $2.31! In Stock!
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34998-01K 4L80E wiring harness connector bracket.
34998-01K 4L80E Wiring harness connector bracket.
This bracket prevents the harness connector from being
pushed inside the pan when the external plug is installed.
More Information

List Price: $4.15
Competitors Price $4.05
Your Cost $2.93
You Save $1.22! In Stock!
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38511-01K 4L80E short manual lever shaft.
38511-01K 4L80E short manual lever shaft.

Competitors Price $22.97
Your Cost $19.98
You Save $2.99!
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TH400, 4L80E 34 element intermediate sprag with end caps.
34418X TH400, 4L80E 34 element intermediate sprag with end caps.

Competitors Price $71.73
Your Cost $53.63
You Save $18.10! (Out of Stock)
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