46RE 47RE 48RE A727 Dodge Oversize Servo Sonnax & Accumulator Piston Kit Sonnax

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  • Regular price $160.62


Country/Region of Manufacture: United States

Interchange Part Number: S22927, S22905H

Surface Finish: Aluminium

Fits Tranmissions: 46RE, 46RH, 47RE, 47RH, 48RE, A727

Placement on Vehicle: Front

Other Part Number: S22927, S22905H

Manufacturer Part Number: 22301B-01K, 22841-04K

Brand: Sonnax

Manufacturer Warranty: Yes

Hello, If you need assistance finding a part please supply the VIN number of your NORTH AMERICAN vehicle AND the part number you are looking for. 


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Accumulator Piston Kit

Part No. 22841-04K


  • Piston 
  • PTFE Scarf-Cut Seal large 
  • PTFE Scarf-Cut Seal small 
  • D-Ring large 
  • D-Ring small 






OE plastic accumulators are prone to breaking and have poor sealing qualities, and metal rings currently offered with aftermarket accumulators also have issues with sealing. Sonnax accumulator piston kit 22841-04K for Chrysler 727, 904, 42-46-47-48RH/RE transmissions features a stronger piston made from anodized billet aluminum and a dual seal design. The piston’s PTFEs seals prevent piston-to-bore contact and the D-rings vastly improve sealing compared to aftermarket steel rings. 

  • Anodized billet aluminum for extra strength
  • Dual seal design for superior sealing


2nd Gear Super Hold Servo Kit

Part No. 22301B-01K


  • Cover 
  • Piston 
  • Sleeve 
  • Pin 
  • Retaining Ring 
  • Seals/Seal Rings (5) 
  • O-Rings (3) 






This Sonnax 2nd gear super hold servo kit 22301B-01K offers 16% more apply area than the OE servo and is the largest and most leak-free servo available for listed Chrysler applications. The small and large diameters of both the piston and cover have improved sealing which eliminates cross leaks and results in 15% less leakage than other designs. Less leakage means there is more pump volume available for the converter and to maintain line pressure.

The rubber and PTFE seals enhance positive sealing and prevent piston contact and bore scuffing. The smaller diameter apply pin gives more area to the release side of the servo where direct clutch oil pushes the servo off during the 2-3 shift.

This increased area balances against the greater 2nd apply area to maintain a favorable apply-to-release area ratio and minimize shift overlap on the 2-3 shift. The overall result is more holding force in 2nd, firmer 1-2 and 2-3 shifts that become firmer under load.

For higher horsepower applications, this servo reduces the need for aggressive lever ratios, excessively high line pressure and other more radical modifications in order to get firmer shifts.

  • 16% more apply area provides more band holding power in 2nd gear
  • One easy-to-install part improves 1-2 and 2-3 shifts
  • Improved seal design conserves pump volume
  • Anodized aluminum for increased durability





._Thank you for looking!