Sierra 18-7044-1 Service Valve Kit, Replaces 437228, for Johnson/Evinrude Outboards with Primer Valve

The Sierra 18-7044-1 Service Valve Kit is a replacement ball valve kit for Johnson and Evinrude outboards equipped with a primer valve. It is built to restore proper primer function on the fuel system, using a chrome-finished metal ball valve with threaded inlet and outlet connections for a direct, drop-in fit. The kit includes 2 pieces and directly replaces OEM part number 437228.

This kit is designed to fit all Johnson/Evinrude outboards that use a primer valve, with the exception of 1993 9.9 HP and 15 HP models, which use a different configuration. Because the valve is threaded on both the inlet and outlet side, installation follows the same servicing procedure as the original primer valve, making this a straightforward maintenance part for keeping the priming circuit sealed and functional. The compact, low-profile design (3.9 x 5.05 x 0.85 inches) keeps the kit close to the original OEM footprint.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7044-1
• Replaces (OEM): 437228
• Fitment: All Johnson/Evinrude outboards with primer valve (except 1993 9.9 HP and 15 HP)
• Material: Metal
• Finish: Chrome
• Valve Type: Ball Valve
• Number of Ports: 2
• Connection Type: Threaded (inlet and outlet)
• Number of Pieces: 2
• Dimensions: 3.9 x 5.05 x 0.85 inches
• Weight: 0.05 pounds
• UPC: 808282378271

Fitment

All Johnson/Evinrude outboards with a primer valve, except 1993 9.9 HP and 15 HP models.

Replaces (OEM)

437228

Frequently Asked Questions

What does the Sierra 18-7044-1 Service Valve Kit fit? It fits all Johnson/Evinrude outboards equipped with a primer valve, except 1993 9.9 HP and 15 HP models, which use a different valve configuration.

What OEM part number does this kit replace? The 18-7044-1 Service Valve Kit replaces OEM part number 437228.

How many pieces come in the 18-7044-1 kit? The kit includes 2 pieces, forming the complete ball valve assembly for the primer circuit.

What material is the valve made of? The valve body is metal with a chrome finish, matching the original primer valve construction on Johnson/Evinrude outboards.

What size is the Sierra 18-7044-1 valve kit? The kit measures 3.9 x 5.05 x 0.85 inches and weighs 0.05 pounds.

Are the inlet and outlet connections threaded? Yes, both the inlet and outlet on the 18-7044-1 Service Valve Kit use threaded connections for direct installation.

Will this kit work on a 1993 9.9 HP or 15 HP Evinrude? No, Sierra 18-7044-1 is not designed for 1993 9.9 HP or 15 HP models; those engines require a different primer valve setup.

How many ports does the valve have? The 18-7044-1 is a 2-port ball valve, matching the OEM primer valve layout it replaces.

Is this a genuine Sierra part or an aftermarket copy? The 18-7044-1 Service Valve Kit is manufactured and sold under the Sierra brand as a replacement part for the OEM 437228 primer valve.

What is the difference between the 18-7044 and 18-7044-1 kits? The 18-7044 Service Valve Kit replaces OEM numbers 175158 and 437228, while the 18-7044-1 covers only OEM part 437228; both fit the same Johnson/Evinrude primer valve applications, except 1993 9.9 HP and 15 HP models.

What is the primer valve used for on these outboards? The primer valve controls fuel priming flow in the fuel system on Johnson/Evinrude outboards, and the 18-7044-1 kit provides the replacement ball valve for that circuit when the original wears out or leaks.