This seal kit will repair leaks from the rod end on a Volvo Penta 3858128 steering actuator (also known as the old style actuator)

The kit includes:
  • Piston Ring Set
  • Rod Cup Seal (23mm x 16mm x 5mm)
  • Wiper (custom machined nylon part)
  • End Cap O-ring
  • Port Adapter O-rings (-4 and -6 O-ring Boss)

We give you a 1 year limited warranty which means we will replace the seal kit if it leaks or otherwise fails within 1 year from the date of purchase. This warranty only covers replacement of the seal kit, it does not cover any labor or liability due to spilled hydraulic fluid, including cleanup expenses.


We are also interested in buying rebuildable cores, please send us a message if you have an extra steering actuator to sell.



Volvo Penta 3858128 SX Steering Actuator, also known as Steering cylinder, steering ram, power steering cylinder.
May also replace these parts: 3860726 3860883 3862210 3862513 3812269