HQPASFY Pressure Washer Pump Head AR42940 for Troy‑Bilt 2.2 GPM — Aluminum, Upgraded Sealing

HQPASFY AR42940 is a high‑quality aluminum replacement pump head engineered to restore reliable 2.2 GPM performance on compatible Troy‑Bilt SRMW/RMW pressure washer pumps.

If your pressure washer is losing pressure, leaking at the head, or showing signs of premature wear, the AR42940 pump head offers a durable, corrosion‑resistant replacement built with upgraded welding and sealing to meet strict quality standards. This unit replaces part numbers AR42940, AR42518, and AR3061, and is designed specifically for 2.2 GPM Troy‑Bilt RMW/SRMW pump models. Read on to confirm fit, learn installation tips, and understand what to expect from this aluminum pump head.

Which Troy‑Bilt models will this pump head work with?

The AR42940 is made for the 2.2 GPM RMW/SRMW family of pumps. It fits multiple model variants that share the same flow specification and mounting interface.

• Compatible models: RMW2.2G24, RMW2G24, RMW2G20, RMW2.2G20D, RMW2G23B, RMW2G25, SRMW2.2G26.
• Replaces: AR42940, AR42518, AR3061—use these part numbers to cross‑check.
• Confirm your pump’s flow rate is 2.2 GPM before ordering to ensure compatibility.

What should I avoid to prevent damage or leaks?

Do not use this head on pumps rated above 2.2 GPM: excessive water volume or misfit applications can crack components or cause leakage. Also check and adjust internal screws as instructed to set the correct operating pressure before full installation.

• NOT compatible with SRMW 2.3G28, SRMW2.4G28, SRMW2.5G28 or other 2.3–2.5 GPM units.
• Avoid running at higher-than‑specified pressure; it may break seals or fittings.
• Adjust pressure by tightening/loosening screws before installation to match your system needs.

How does the design improve durability and sealing?

The pump head uses upgraded welding techniques and high‑grade aluminum to enhance sealing and resist corrosion. Those construction choices reduce leak points and extend service life compared with many stock cast‑iron or lower‑quality replacements.

• Advanced welding improves joint integrity and reduces potential leak paths.
• Aluminum construction offers good corrosion resistance and lighter weight.
• Designed to meet stringent quality checks for long‑term, trouble‑free use.

What do I get in terms of support and warranty?

HQPASFY backs the AR42940 with a 24‑month warranty and customer support for fitment or performance questions. If you encounter issues, contact the seller for troubleshooting or replacement options under warranty.

• 24‑month warranty covers manufacturing defects and workmanship concerns.
• Customer support available for installation and compatibility help.
• Replacement guidance provided if the part does not match your pump.

Who is this for: The HQPASFY AR42940 pump head is aimed at homeowners and light‑duty pros who need a reliable, corrosion‑resistant replacement for Troy‑Bilt 2.2 GPM RMW/SRMW pressure washer pumps. Choose this part if your current pump head leaks, pressure has dropped, or you want a longer‑lasting aluminum alternative to restore factory performance—just verify your pump’s 2.2 GPM rating before ordering.