Yanmar PN 128990-42511 (replaces 128990-42510) Designed for engine cooling in marine environments.

Fits Yanmar 2YM15 (with serial numbers lower than E6835), 3YM20, (with serial numbers lower than E13045) and 3YM30 engines (Specifically the later type engines with a 19mm inlet).

Not for 3YM30AE Engines

This pump features a 17mm inlet port and a 19mm discharge port

Uses Impeller PN 128990-42570