Yamaha - Cylinder block assy - 66M-W009B-04-1S MerCruiser Oil Pump Pick-Up Tubes A: It’s usually a calibration

A: It’s usually a calibration or harness issue

It gives the trim switch a proper path into the DTS system without needing to splice wires or build a workaround

Why Buy OEMOEM modules keep the digital communication steady so each engine responds the way it should

It installs cleanly with common shop tools

Yamaha - Cylinder block assy - 66M-W009B-04-1S MerCruiser Oil Pump Pick-Up Tubes A: It’s usually a calibration66M W009B 04 1S CYLINDER BLOCK ASSY WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.