SLPTSS1511UR-402 Pump & Gearbox Assembly – TSS1511 Pump w/ Plumbing, VRT Unloader

Part Number: SLPTSS1511UR-402
Category: Pressure Washer Pumps & Pump Assemblies
Type: Pump & Gearbox Assembly w/ Plumbing – TSS1511 Gear-Drive, 4.0 GPM @ 3500 PSI

The Pressure-Pro SLPTSS1511UR-402 Pump & Gearbox Assembly is a factory-built, fully plumbed replacement centered around the TSS1511 pump paired with an integrated gear-drive system. Delivering 4.0 GPM at 3500 PSI and engineered for 1450 RPM operation, this assembly is designed for engine-driven pressure washer systems requiring a 1″ engine shaft. Featuring a 24 mm pump shaft and supplied complete with plumbing and a VRT3-310EZ unloader, it provides a true drop-in solution that converts engine RPM efficiently while delivering smooth, high-pressure performance and extended pump life in demanding commercial environments.

Product Specifications

• Pump Model: TSS1511

• Assembly Type: Complete pump & gearbox assembly with plumbing

• Pump Type: Triplex Plunger, Gear Drive

• Flow Rate: 4.0 GPM

• Max Pressure: 3500 PSI

• Rated Speed: 1450 RPM

• Required Engine Shaft Size: 1″

• Pump Shaft Size: 24 mm

• Unloader: VRT3-310EZ (included)

• Manufacturer: Pressure-Pro

• MPN: SLPTSS1511UR-402

• Condition: New

Features & Benefits

• Genuine Pressure-Pro OEM pump and gearbox assembly

• Gear-drive system for efficient power transfer and reduced wear

• Factory-plumbed for fast, drop-in replacement

• High-output 4.0 GPM / 3500 PSI performance

• Designed for engines with 1″ shafts

• Includes VRT3-310EZ unloader for precise pressure control

• Smooth, low-RPM operation for extended pump life

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 (1450) before ordering

• Designed for systems using TSS1511 gear-drive pumps

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