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.47RE, 48RE
Rear Servo Piston
Part No. 22912C
Fits '97-later units.
OE Part No. 52118745
Find a DistributorThe rear servo piston in Chrysler 47RE and 48RE '97-later 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 22912C 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" |
Related Sonnax Parts
Required
Recommended
46RE, 46RH, A727
Rear Servo Piston 22912
-
Helps cure:
- Burnt bands
- No Reverse
- Rear servo piston sticking/breakage
Required
Recommended
47RE, 47RH
Rear Servo Piston 22912B
Fits '94–'96 units.
-
Helps cure:
- Burnt bands
- No Reverse
- Rear servo piston sticking/breakage
