SLPRKA4G40GR-402 Pump Assembly – RKA4G40 Gear Pump w/ Plumbing

Part Number: SLPRKA4G40GR-402
Category: Pressure Washer Pumps & Pump Assemblies
Type: Pump Assembly w/ Plumbing – RKA4G40 Gear-Drive, 4.0 GPM @ 4000 PSI

The Pressure-Pro SLPRKA4G40GR-402 Pump Assembly is a factory-built, fully plumbed gear-drive replacement centered around the AR RKA4G40NL pump paired with an AR1690 gear reducer for 1″ shaft engines. Delivering 4.0 GPM at 4000 PSI and engineered for 1750 RPM operation, this complete pump package includes a VRT3-310EZ unloader and injector, providing a true drop-in solution that converts engine speed efficiently while delivering smooth, high-pressure performance and extended pump life in demanding commercial environments.

Product Specifications

• Pump Model: AR RKA4G40NL

• Assembly Type: Complete pump package with plumbing

• Pump Type: Triplex Plunger, Gear Drive

• Flow Rate: 4.0 GPM

• Max Pressure: 4000 PSI

• Rated Speed: 1750 RPM

• Shaft Size: 24 mm

• Engine Compatibility: Gear-reduced for 1″ shaft engines

• Gear Reducer: AR1690

• Unloader: VRT3-310EZ (included)

• Weight: 31.8 lb

• Manufacturer: Pressure-Pro

• MPN: SLPRKA4G40GR-402

• Condition: New

Features & Benefits

• Genuine Pressure-Pro OEM gear-drive pump assembly

• Complete package with unloader and injector pre-installed

• Gear-reduced design for direct engine mounting (1″ shafts)

• High-output 4.0 GPM / 4000 PSI performance

• Smooth, low-vibration operation for commercial use

• Heavy-duty 24 mm shaft and triplex plunger construction

• Factory-plumbed for fast, drop-in replacement

Applications

• Engine-driven commercial pressure washers

• Gear-drive pressure washer systems

• Industrial and fleet-wash equipment

• Replacement assembly for compatible Pressure-Pro units

• Equipment repair, refurbishment, and upgrades

Important Notes

• Verify engine shaft size (1″), pump shaft size (24 mm), and RPM compatibility (1750) before ordering

• Designed for systems using RKA4G40 gear-drive pumps

• Final operating PSI and GPM depend on engine speed and overall system configuration