Gulfmew Coolant System Flush Gun Kit — Blue pistol-grip radiator flush, 3/4" hose & 1/4" air

The Gulfmew Coolant System Flush Gun Kit is a compact, all-in-one tool that uses garden-hose water plus compressed air to backflush radiator hoses and heater cores for removing rust, scale, and debris.

This kit is built for DIY mechanics and professional technicians who need a fast, effective way to clear coolant passages before repair or seasonal maintenance. It combines a pistol-style flush gun, a garden-hose connector, an air fitting, and PTFE tape so you can link a 3/4-inch outdoor hose and a 1/4-inch air line to pulse water through stepped nozzles. The blue finish and ergonomic trigger are designed for workshop durability and comfortable handling during repeated backflushing cycles.

How does the Gulfmew flush gun remove blockages from a heater core or radiator hose?

The tool mixes bursts of compressed air with steady water flow to dislodge buildup inside coolant passages. Alternating air and water pulses help break loose rust flakes, sediment and scale so they can be flushed out the opposite end.

• Connects to standard 3/4" garden hoses for continuous water supply.
• Uses a 1/4" air line fitting to introduce compressed-air pulses.
• Stepped nozzles let you direct flow into various hose diameters.
• Trigger-operated bursts plus locking latch for continuous operation.

Which hose sizes and fittings are compatible with this radiator flush kit?

The stepped nozzle design accepts a wide range of common hose openings so you can fit most radiator and heater-core hoses without adapters. The included garden hose connector fits standard 3/4-inch spigots used on outdoor hoses.

• Nozzle diameters sized for 19, 29, 32, 36.5 and 40 mm openings.
• Compatible with 3/4" garden hoses for water supply.
• Accepts 1/4" compressed-air lines via the supplied air fitting.
• PTFE tape included to ensure leak-free threaded connections.

What features make this tool practical for garage or roadside maintenance?

The pistol grip and locking latch let you control bursts of flow without hand fatigue, while the compact kit contains only the parts needed for most flushing jobs. It’s sized for portability and quick setup so a single technician can perform a backflush in minutes.

• Ergonomic trigger for controlled short bursts or continuous flow using the latch.
• Lightweight construction for easy handling during repeated cycles.
• Complete kit includes flush gun, hose connector, air fitting and PTFE tape.
• Blue finish for visible placement in a tool chest or workbench area.

How should I use the Gulfmew kit safely and effectively?

Always follow your vehicle manufacturer’s cooling-system guidance and ensure the engine is cool before disconnecting any hoses. Match nozzle size to the hose opening, use the lock for steady flushing, and discard contaminated coolant according to local regulations.

• Cool the engine fully; relieve pressure before opening the system.
• Select the proper stepped nozzle for a snug fit to avoid splatter.
• Alternate air pulses and water flow; inspect expelled fluid for debris.
• Dispose of used coolant responsibly and consult service manuals if unsure.

Who is this for? This Gulfmew flush gun kit is suited to home mechanics, small repair shops and fleet technicians who perform regular cooling-system upkeep or diagnose heating problems. If you need a portable, low-cost method to clear heater cores, radiator hoses or coolant passages before repairs or seasonal checks, this kit provides the essential fittings and a user-friendly tool to get the job done. Check vehicle service recommendations and hose dimensions before starting any flush to ensure compatibility and safe operation.