Product Description
6T70 (GEN-1) 6T75 (GEN-1) 4-5-6 Accumulator Piston Kit
Sonnax Part Number: 124740-04K
NO TOOLING REQUIRED
Excess wear at the accumulator bore or on the critical diameter of the accumulator piston is common in first generation GM 6T70 and 6T75 transmissions. The 4-5-6 accumulator piston is utilized during apply of the 4-5-6 clutches to smooth engagement. Wear at this bore allows 4-5-6 clutch apply oil to exhaust, resulting in ratio codes, harsh or delayed application of the clutch pack, burnt clutches and slipping/flares. Installing Sonnax 4-5-6 accumulator piston kit 124740-04K eliminates leaks to restore normal shift operation and feel.
- O-Ring incorporated for positive sealing, even in worn bores
- Annular grooves help center piston in bore to reduce future side-load wear
- Hardcoat anodized aluminum piston combats premature wear
- Drop-in Zip Valve™ parts install quickly and easily
PACKAGE CONTAINS
- Piston
- Spring Small
- Spring Large
- O-Rings (2) 1 Extra
SYMPTOMS
- 3-4 Flare
- Ratio codes
- 4-5-6 Clutch burned
- Slipping gears
- 3-4 Harsh
CAUSE
Wear at the accumulator piston bore or on the critical diameter of the accumulator piston allows clutch apply oil to exhaust.
CORRECTION
Recover hydraulic control and renew shift feel and performance by installing Sonnax drop-in 4-5-6 accumulator piston kit.
Product Videos
Custom Field
Requires Tooling? No
