← Back to ProductsProduct Data Sheet · Rev. 07/2026
Factory Repair Kit
PK300S 3″ Stainless Steel Repair Kit
Factory MatchedComplete RebuildField InstallableMade in USA
PA300S
Fits Pump
2–5hrs
Rebuild Time
30–50%less
Cost vs. New Pump
34lbs
Kit Weight
Overview
The PK300S rebuilds the PA300S to original factory specification. It carries both gear assemblies, every bearing and seal, and the full centercase gasket set — the complete wearing path of the pump in one part number.
A rebuild takes 2–5 hours with standard hand tools and runs 30–50% less than a replacement pump. See the rebuild vs. replacement cost analysis for the full comparison.
Fits These Pumps
When to Rebuild
- Reduced flow output — the PA300S delivers up to 158 GPM at 280 RPM; a significant drop points to worn internals.
- Increased vibration or unusual noise during operation, particularly at higher pressures.
- Visible fluid leakage past the seals at the shaft or case joints.
- Rising drive power for the same duty, indicating increased internal friction.
- Scheduled interval reached — rebuilding on a maintenance schedule costs far less than an unplanned failure.
PK300S
3″ Stainless Steel Repair Kit
Kit Specifications
Kit weight34 lbs
Shipping (boxed)12″ × 18″ × 6″
Fits pumpPA300S
Gear shaftsInduction-hardened stainless steel
Rebuild time2–5 hours
Tools requiredStandard hand tools
Kits do not include the pump housing or end covers. O-rings, wear plates and assembly lubricant are not part of the kit.
Kit Contents
PA350SDrive gear assembly — 1 req.
PA351SIdler gear assembly — 1 req.
PM038Roller bearing — 4 req.
PM036High pressure seal — 4 req.
PM037Low pressure seal — 4 req.
PM007G01Centercase gasket, 0.008″ — 3 req.
PM007G02Centercase gasket, 0.016″ — 2 req.