This umbrella check valve is necessary for preventing back flow and maintaining pressure during recharge on Mikuni accelerator pumps with the round style diaphragm (see product photo).
Application: Seadoo 951 engines (GTXL, XPL, GSXL, LRV, some boat models).
Installation Directions: Lubricate tip and apply gradual pressure with finger un...
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Only place i could find this little guy, works great
M
Matt · July 4, 2026
Thanks so much for your ability to source this part .