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Vehicle Info NeededSONNAXPART NUMBER: 852-34914-01
Low/Reverse Servo Piston GM TH400 and 4L80-E (1995 and Earlier) Transmissions
$6647
Ships on Sep 07, 2026
Lowest Price GuaranteeGM TH400/4L80-E
- Low/Reverse Servo Piston
- GM TH400 Transmissions
- 4L80-E (1995 and Earlier) Transmissions
- OEM Replacement Upgrade
- High-Strength Billet Aluminum
- Sold Individually
Sonnax Low/Reverse Servo Piston 34914-01 is a high-strength billet aluminum, direct-replacement upgrade servo piston to prevent failure in the GM TH400 and 1995 and earlier 4L80-E transmissions
Note: Replaces GM OEM part number 24232745
High-Performance Servos, Servo Kits, and Components to Meet the Toughest Transmission Challenges
Sonnax servos progressively increase band force as line pressure increases and are the perfect upgrade for more holding power without excessively harsh shifts.
Part TypeAutomatic Transmission Servo Piston
Product LineSonnax Servo Kit and Components
BrandSONNAX
Package Height2.9
Package Width4.8
Package Length4.9
Weight0.75 PG
Part CategoryReplacement Parts
Trans ModelTH400/4L80-E
Servo TypeLow/Reverse
QuantitySold individually
Part FitmentSemi Universal
Servo MaterialBillet aluminum
Vendor Part Number34914-01
Package Qty1
Package TypeEA
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