Samson PM45/60 Repair Kit - 3:1/6:1 NPT Lower Valve Kit #539301
| Samson Part # | 539301 |
| Product Type | NPT Lower Valve Repair Kit |
| Fits PM45 | PumpMaster 45 - 3:1 Ratio |
| Fits PM60 | PumpMaster 60 - 6:1 Ratio |
| Connection Configuration | NPT |
| Service Area | Lower Fluid-Section Valve |
Samson PM45 3:1 / PM60 6:1 NPT Lower Valve Repair Kit #539301
Genuine Samson lower valve repair kit for specific PumpMaster 45 and PumpMaster 60 oil pump configurations. Part #539301 services the lower fluid-section valve on PM45 3:1 and PM60 6:1 pumps with the applicable NPT configuration.
The lower valve is part of the pump's fluid-handling section and helps control one-way fluid movement during each pumping cycle. This kit is intended for rebuilding that valve when internal components become worn or require service.
Questions before ordering? Call (817) 865-3707 and our team will help confirm your PumpMaster ratio and the correct lower-section repair kit.
Compatibility & Fitment
For Samson PumpMaster 45 pumps with a 3:1 ratio and PumpMaster 60 pumps with a 6:1 ratio using the applicable NPT lower-section configuration. This is not a universal PM45/PM60 kit; verify your pump ratio before ordering.
Frequently Asked Questions
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