Shurflo Blaster II Washdown Pump 4238-121-E07, 12V 3.5 GPM Self-Priming Marine Deck Wash Pump

The Shurflo Blaster II Washdown Pump (4238-121-E07) is a high-flow, 12 VDC fresh water pump built for tough washdown applications such as fish box cleaning, scaling, and anchor chain cleaning. It delivers 3.5 GPM (13.2 LPM) of flow with a 45 PSI (3.1 BAR) shut-off pressure, giving boaters strong, consistent spray pressure for deck and equipment cleanup.

This self-priming pump lifts water up to 6 feet and can run dry without damage, so it won't be harmed if the water source runs out mid-task. Quiet operation and smooth performance are backed by a unique over-molded, single-piece diaphragm and a corrosion-resistant, electro-coated motor designed to withstand harsh marine environments. The switch and motor are fully sealed against water intrusion, and the pump is both thermally protected and ignition protected, making it suitable for use aboard boats with 12V DC electrical systems.

The Blaster II ships ready to install, including (2) 3/4 inch hose barb fittings, (1) 3/4 inch GHT (M) fitting, and a plastic spray nozzle, so it can be connected directly to a washdown hose without sourcing separate parts. An adjustable pressure switch lets owners fine-tune performance for their specific washdown setup.

Specifications

• Brand: Shurflo
• Manufacturer Part Number: 4238-121-E07
• Voltage: 12 VDC
• Flow Rate: 3.5 GPM (13.2 LPM)
• Maximum Amperage: 7.5 amps
• Shut-Off Pressure: 45 PSI (3.1 BAR)
• Ports: 1/2 inch-14 NPSM Male
• Dimensions: 9 inches x 4.9 inches x 4.1 inches
• Weight: 6.10625 pounds
• Material: Plastic
• Color: Beige
• Self-Priming Lift: Up to 6 feet
• Included Fittings: (2) 3/4 inch hose barb fittings, (1) 3/4 inch GHT (M) fitting, plastic spray nozzle
• Protection: Thermally protected, ignition protected, sealed switch

Frequently Asked Questions

What is the flow rate of the Shurflo Blaster II Washdown Pump 4238-121-E07? The Shurflo Blaster II Washdown Pump 4238-121-E07 delivers 3.5 GPM (13.2 LPM) of flow, suited for high-demand washdown tasks like fish box and anchor chain cleaning.

How much pressure does this washdown pump produce? It has a 45 PSI (3.1 BAR) shut-off pressure, giving the Blaster II Washdown Pump strong spray force for cleaning decks and equipment.

Can the Blaster II Washdown Pump run dry without being damaged? Yes, the Shurflo Blaster II Washdown Pump 4238-121-E07 has dry run capability and will not be damaged if it runs without water.

What voltage system does this pump require? This pump operates on a 12 VDC system, matching standard marine 12V electrical setups.

What fittings come included with the Blaster II Washdown Pump? The pump includes (2) 3/4 inch hose barb fittings, (1) 3/4 inch GHT (M) fitting, and a plastic spray nozzle, so no additional fittings are needed for basic installation.

How high can this pump self-prime? The Shurflo Blaster II self-primes up to 6 feet, allowing it to draw water from a source below the pump's mounting location.

What size are the pump ports on the 4238-121-E07? The Blaster II Washdown Pump has 1/2 inch-14 NPSM Male ports.

What is the pump housing made from? The Blaster II Washdown Pump uses a plastic housing paired with a corrosion-resistant, electro-coated motor built to withstand harsh marine environments.

How much does the Shurflo Blaster II Washdown Pump weigh? This pump weighs 6.10625 pounds.

What are the dimensions of the 4238-121-E07 pump? The Blaster II Washdown Pump measures 9 inches x 4.9 inches x 4.1 inches.

Is the Blaster II Washdown Pump ignition protected? Yes, the Shurflo Blaster II Washdown Pump 4238-121-E07 is ignition protected and thermally protected for safe use on boats.

What is this pump typically used for? It is built for tough washdown applications such as fish box cleaning, scaling, and anchor chain cleaning aboard boats.