Sierra 18-7799 Fuel Pump Diaphragm Kit for Yamaha Outboard Motors

The Sierra 18-7799 Fuel Pump Diaphragm Kit is a replacement diaphragm set for Yamaha outboard motor fuel pumps. The kit contains two diaphragms, one 18-7842 Fuel Pump Diaphragm and one 18-7843 Fuel Pump Diaphragm, giving you both components needed to rebuild the fuel pump in a single package rather than sourcing each diaphragm separately.

Sierra builds this kit to meet or exceed the quality of the original equipment diaphragms it replaces, using precision-built components engineered to hold up in the marine environment. Sierra supplies parts to OEM engine manufacturers and boat builders, and this diaphragm kit is manufactured to the same fit and function standard as the factory originals it is designed to replace.

This is a compact, lightweight kit intended for outboard owners and marine technicians performing a fuel pump rebuild on applicable Yamaha outboard motors. Because it supplies both diaphragms in one kit, it simplifies ordering and ensures both wear components are replaced together during service.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7799
• Product Name: Fuel Pump Diaphragm Kit
• Included Components: (1) 18-7842 Fuel Pump Diaphragm and (1) 18-7843 Fuel Pump Diaphragm
• Unit Count: 1
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.01 pounds
• UPC: 808282244842

Fitment

Designed for Yamaha outboard motor fuel pumps.

Frequently Asked Questions

What does the Sierra 18-7799 Fuel Pump Diaphragm Kit include? The kit includes two diaphragms: one 18-7842 Fuel Pump Diaphragm and one 18-7843 Fuel Pump Diaphragm, giving you both components needed for a fuel pump rebuild in one package.

What engines does the 18-7799 kit fit? The Sierra 18-7799 Fuel Pump Diaphragm Kit is designed for Yamaha outboard motor fuel pumps.

How many diaphragms come in this kit? Two diaphragms are included, part numbers 18-7842 and 18-7843, both packaged together under Sierra part number 18-7799.

Is the Sierra 18-7799 kit genuine OEM or aftermarket? It is a Sierra aftermarket replacement kit engineered to meet or exceed the quality of the original equipment diaphragms it replaces.

How much does the 18-7799 fuel pump diaphragm kit weigh? The Sierra 18-7799 Fuel Pump Diaphragm Kit weighs 0.01 pounds.

What are the dimensions of the diaphragm kit? The Sierra 18-7799 kit measures 0.39 x 0.39 x 0.39 inches.

Can I order the individual diaphragms separately instead of the full kit? The Sierra 18-7799 kit packages both the 18-7842 and 18-7843 diaphragms together as a single fuel pump diaphragm kit.

What is the UPC for the Sierra 18-7799 kit? The UPC for the Sierra 18-7799 Fuel Pump Diaphragm Kit is 808282244842.

Does this kit come with gaskets or other fuel pump hardware? No, the Sierra 18-7799 kit contains only the two diaphragms, 18-7842 and 18-7843; no additional gaskets or hardware are included.

Why replace fuel pump diaphragms as a kit rather than one at a time? Since both diaphragms in a Yamaha outboard fuel pump wear together, the Sierra 18-7799 kit supplies both the 18-7842 and 18-7843 diaphragms at once so the entire wear set is replaced during a single rebuild.