Samson PM4 3:1 Main Piston / Fluid Plunger Kit #734964
| Samson Part # | 734964 |
| Product Type | Main Piston / Fluid Plunger Repair Kit |
| Pump Series | PumpMaster 4 |
| Fits | PM4 3:1 |
| Service Area | Fluid Plunger / Central Rod Assembly |
Samson PM4 3:1 Main Piston / Fluid Plunger Repair Kit #734964
Genuine Samson repair kit for the PumpMaster 4 3:1 oil pump. Samson currently lists #734964 as the PM4 3:1 Main Piston Kit, while technical service documentation identifies the serviced assembly as the fluid plunger or central bar section.
The kit is used when servicing the main reciprocating rod/plunger components that transfer air-motor motion into the pump's fluid section. It is a component-specific repair kit rather than a complete PM4 rebuild package.
Questions before ordering? Call (817) 865-3707 and our team will help confirm the correct PM4 3:1 service kit.
Compatibility & Fitment
Designed for compatible Samson PumpMaster 4 3:1 oil pumps. Because PM4 repair kits are specific to different portions of the pump, verify part #734964 against your service documentation before ordering.
Frequently Asked Questions
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