Gulfmew Coolant System Flush Gun – Lever-Action Heater Core Flush Kit, Garden-Hose Fittings & Air-Assist

Gulfmew Coolant System Flush Gun is a lever-action heater core flush kit that uses controlled water and compressed air to clear rust, scale, and debris from radiators and heater cores. Maintaining a clean cooling system prevents overheating, restores heater performance, and extends component life. The Gulfmew kit combines a simple hand-operated flushing gun with garden-hose fittings, multiple bleed nozzles, and PTFE tape to create a versatile tool for DIY mechanics and shop technicians. It’s built from corrosion-resistant materials for repeated use in automotive and light industrial applications.

How does the flush gun control flow and pressure?

The lever-action trigger regulates water flow and pressure so you can apply gentle rinses or stronger bursts as needed. A locking latch keeps the trigger secured for continuous flushing without holding constant pressure, reducing operator fatigue during longer jobs.

• Trigger lever adjusts water volume and force.
• Locking latch enables hands-free continuous flow.
• Durable construction resists corrosion under repeated use.

What connections and nozzle sizes are included?

The kit ships with two garden hose connectors sized for standard hoses and a 1/4" air inlet that links to common shop air lines. Five coolant/air bleeder nozzles cover a range of hose inner diameters so you can seal different heater-core and radiator ports during backflushing.

• Garden hose fit: inner diameter 16mm, outer diameter 20mm.
• Air inlet: 1/4" compatible with workshop airline fittings.
• Nozzles: 19mm, 29mm, 32mm, 36.5mm, 40mm to fit various hose sizes.

How does the kit improve heater core and radiator cleaning?

By combining pressurized water flow with controlled air pulses, the tool loosens trapped sediment and blows it out of channels where plain flushing may fail. The narrow nozzles and firm seal let the gun direct force into tight passages for more thorough removal of rust and scale.

• Water-plus-air action dislodges embedded debris.
• Multiple nozzle diameters allow targeted backflushing.
• PTFE tape provided to create leak-resistant connections.

How easy is setup and operation for a DIY user?

Setup is straightforward: attach the hose adapters, wrap threads with PTFE tape, connect the air line, and insert the selected nozzle into the heater or radiator hose. Turn on the water, squeeze the lever, and use the latch for continuous streams; no special training is required for basic flushing tasks.

• Includes adapters and PTFE tape for secure fittings.
• Simple lever action requires minimal effort to operate.
• Works with common garden hoses and standard shop air lines.

Who is this for: The Gulfmew Flush Gun is intended for vehicle owners who perform their own cooling-system maintenance, small repair shops, and fleet technicians needing a portable, reliable backflush solution. It’s best suited to gasoline- and diesel-powered cars, light trucks, and small industrial cooling circuits where heater cores or radiators show reduced flow from sediment or corrosion. If you want a practical, low-cost tool to restore coolant circuit flow without removing complex components, this kit offers the fittings and nozzle range to get the job done efficiently.

FAQ

Q: Will this kit fit my standard garden hose?

A: Yes — the included connectors fit hoses with a 16mm inner diameter (20mm outer diameter), the common garden-hose size referenced.

Q: Can I use shop air with the Gulfmew flush gun?

A: Yes — the tool has a 1/4" air inlet that connects to standard workshop air lines for combined water-and-air flushing.