258mm LU (4T65-E), 265mm LU (4T60-E, 4T80-E)
Piston/Damper Assembly
Part No. GM-DA-8
OE Salvaged Assembly, Sold "As-Is", Does not fit the 4T60-E 265mm LU
Sonnax salvaged OE piston/damper assembly GM-DA-8 can be used to replace damaged assemblies in GM 258mm LU (4T65-E) converters.
This hard-to-find salvaged piston/damper assembly can also be used with Sonnax piston plate GM-DA-7P and rivets GM-RV-9 to convert the viscous damper assembly in GM 265mm LU (4T80-E) units, which have a high failure rate due to leaks and cannot be repaired, to a mechanical spring-type damper.
GM-DA-8 can also be used for optional builds in Sonnax racekits GM-RK-16, GM-RK-17 and GM-RK-18.
Where to Buy
- Existing Customers: Contact your sales representative.
- New Customers: Fill out the form and a sales representative will contact you.
Related Sonnax Parts
Required
Recommended
298mm LU (250C, 350C, 200-4R, 4L60 & E), 4L60-E (298mm), Single-Plate Performance Converter
298mm Performance Converter Kit GM-RK-18
- Unit Size: 10"
- Core: GM 245mm
- Dampered: Yes
- Lockup: Single-Plate
- Transmission Unit: 4L60-E
- Turbine Hub Input Spline Count: 30
Required
Recommended
6L80 (300mm), Single-Plate Performance Converter, 6L80, 6L90 (300mm)
300mm Performance Converter Kit GM-RK-16
- Unit Size: 10"
- Core: GM 245mm
- Dampered: Yes
- Lockup: Single-Plate
- Transmission Unit: 6L80, 6L90
- Turbine Hub Input Spline Count: 36
Required
Recommended
280mm LU (4L60-E) “VJCX”, 300mm (4L60-E), 4L60-E (300mm), Single-Plate Performance Converter
300mm Performance Converter Kit GM-RK-17
- Unit Size: 10"
- Core: GM 245mm
- Dampered: Yes
- Lockup: Single-Plate
- Transmission Unit: 4L60-E
- Turbine Hub Input Spline Count: 30
Required
Recommended
265mm LU (4T60-E, 4T80-E)
Friction Ring B45270HTE
- Material: HTE
- Thickness: 0.045"
- Inner Dia.: 9.375"
- Outer Dia.: 10.375"
Required
Recommended
265mm LU (4T60-E, 4T80-E)
Friction Ring B66270HTL
- Material: HTL
- Thickness: 0.066"
- Inner Dia.: 9.375"
- Outer Dia.: 10.375"
Required
Recommended
265mm LU (4T60-E, 4T80-E)
Friction Ring B66270HTE
- Material: HTE
- Thickness: 0.066"
- Inner Dia.: 9.375"
- Outer Dia.: 10.375"
Required
Recommended
245mm LU (3T40, 3L30, 200C, 4T60-E, 4L60 & E:S-10 only), 245mm LU Euro (5L40-E), 258mm LU (4L60-E, 5L40-E), 258mm LU (4T65-E), 265mm LU (4T60-E, 4T80-E), 280mm LU (4L60-E) “VJCX”, 300mm (4L60-E), 4L60-E (298mm), Single-Plate Performance Converter, 4L60-E (300mm), Single-Plate Performance Converter, 4L80-E (Dual Stator), 4L80-E (Early Single Stator), 4L80-E (Late Single Stator), 6L80 (300mm), Single-Plate Performance Converter, CD4E, 9-1/4" (3.0L & 2.3L)
Rivet GM-RV-9
- Rivet Type: Solid
- Rivet Head: Flat
- Head Dia.: 0.300"
- Shank Dia.: 0.198"
- Length: 0.515"