Himore 3100 PSI Pressure Washer Pump for Homelite UT80432/UT80432A — 2.5 GPM, Chemical Injector & Thermal Relief

This is a replacement 3100 PSI vertical power pressure-washer water pump compatible with Homelite UT80432 and UT80432A units, supplied with a chemical injector, unloader and thermal relief valve.

If you need a robust pump to restore or upgrade a gas pressure washer, this Himore unit offers a 3100 PSI maximum pressure rating and a 2.5 GPM flow to tackle medium-duty cleaning tasks. Designed to mount vertically with rear-facing inlet/outlet plumbing, the pump includes the key service features — chemical injector, unloader valve, thermal release and outlet tube — so it arrives ready for installation on many Homelite-style frames. Carefully review the dimensions, mounting pattern and shaft details below to confirm fit before ordering; mismatched hardware or shaft lengths can require longer bolts or spacers (not included).

How does this pump perform for routine cleaning jobs?

The Himore pump delivers up to 3100 PSI and 2.5 gallons per minute, making it well suited for driveways, decks, siding and outdoor equipment. Its 3400 RPM maximum pump speed gives consistent pressure output across common engine setups when paired with an appropriate gasoline engine of at least 6 HP.

• Maximum pressure: 3100 PSI for medium-duty cleaning
• Maximum flow: 2.5 GPM for efficient rinsing
• Max pump speed: 3400 RPM to match common engine speeds
• Minimum recommended engine: 6 horsepower

What are the key dimensions and connections I must check?

Confirm these specifications against your machine before purchase: shaft diameter, bolt hole pattern and inlet/outlet fittings. The shaft is 7/8" diameter and the three-bolt mounting pattern measures 7 11/16" x 6 3/16" x 6 7/16", with 4" center-to-outer-hole spacing.

• Shaft diameter: 7/8" — verify with calipers or manual spec sheet
• Bolt pattern: 7 11/16" x 6 3/16" x 6 7/16" with 4" center spacing
• Inlet: standard garden-hose type connection for common hoses
• Outlet tube: 22mm male fitting, check hose/adaptor compatibility

What comes in the box and what might I need to add?

The pump ships with the chemical injector, unloader valve, thermal release valve, outlet tube, hose and a keyed shaft. However, depending on your engine layout you may need longer bolts and spacers to avoid stress on the pump legs and ensure proper alignment.

• Included: vertical pressure-washer pump, chemical injector, unloader, thermal relief, outlet tube and hose
• Not included: longer mounting bolts or spacers; common bolt sizes noted in listing
• Tip: use spacers if engine shaft or frame interferes with pump legs to prevent breakage
• Note: pump head is reversible to suit certain installations

Are there safety or maintenance points I should know?

Never operate the pump above its rated 3100 PSI and always follow safe-pressure-washer practices. Regularly inspect fittings, seals and the unloader valve and ensure cooling water flows below the 140°F maximum to prevent damage and reduce risk.

• Do not exceed 3100 PSI — overpressure can damage the pump and be dangerous
• Maximum water temperature: 140°F — avoid hot-water sources above this limit
• Periodic checks: seals, hose connections, unloader and thermal valve operation
• Engine fitment: verify engine horsepower (min 6 HP) and shaft alignment

Who this pump is for: This Himore 3100 PSI replacement is intended for owners of Homelite UT80432 / UT80432A-style pressure washers and similar machines seeking a direct-replacement vertical pump with rear-facing plumbing. It's a practical option for DIY mechanics, rental operators and hobbyists who understand how to confirm shaft, mounting and plumbing compatibility. If you are unsure whether this pump will fit your unit, provide model, serial or engine details to a parts specialist before purchasing — correct fitment prevents returns and keeps your washer running safely.