Product Description
Sonnax part number: 22912B
Fits: 47RH, 47RE
OE part no.: 4531229
Fits: 47RH, 47RE
OE part no.: 4531229
Fits '94–'96 units.
The rear servo piston in Chrysler 47RH/RE '94–'96 units can get wedged in the bore, causing bind in Reverse. Intermittent binding leads to bore wear and band damage. The improved design and material of Sonnax rear servo piston 22912B eliminates these concerns for consistent rear band apply.
- Verify OE piston by referring to image shown here.
- Modified seal ridges prevent piston from sticking in case bore
- Billet aluminum won’t crack like OE cast piston
- 2.460" O.D. piston
| Part No. | Application | OE Part No. | O.D. |
|---|---|---|---|
| 22912C | 47RE, 48RE '97-Later | 52118745 | 2.46" |
| 22912B | 47RE/RH '94–'96* | 4531229 | 2.46" |
| 22912 | 46RE/RH, A727 | 2801281 | 2.80" |
Symptoms
- Burnt bands
- No Reverse
- Rear servo piston sticking/breakage
Cause
Piston cocking in bore and pin bore wear inhibits band apply.
Correction
Restore normal servo operation by installing Sonnax rear servo piston.
Product Videos
Custom Field
Requires Tooling No
Transmission Model(s) 47RE, 47RH
Year Range 1994-1996
OEM # 4531229, O.D
