Sierra 18-7339 Yamaha Outboard Electric Fuel Pump
- Brand:
- Sierra
- Part no:
- 18-7339
Where to buy
View on Amazonpaid link
The Sierra 18-7339 is an electric fuel pump made for Yamaha outboards, built around a positive displacement gerotor pump. Sierra gives it a carbon commutator, which it says brings down amp draw and RFI. The maker also states that the pump meets or exceeds OEM specifications for durability and long life, though no flow, pressure or voltage figures are listed.
Our take
The carbon commutator is the feature to note on the Sierra 18-7339: the maker credits it with lower amp draw and less RFI. That is a claim about electrical load and interference only, and no flow or pressure figures are stated.