Keep sand, shell grit, and errant fishing line out of your Yamaha’s cooling passages with the Water-Inlet Cover 6J9-45215-00-00. This is the aft “screen two” on F150, F175, and F200 four-stroke lower units—the long, louvered plate that lines up with the water pick-up on the starboard side of the gear-case.

• OEM-molded glass-filled nylon shrugs off impact and salt without cracking or warping.

• Deep 7-mm louvers channel flow straight to the pump while deflecting debris that can shred an impeller.

• Four precisely countersunk holes match the factory #10 screws, so it seats flush—no buzz, no crooked frame.

• Matte-black UV finish blends seamlessly with the skeg and won’t chalk after seasons in the sun.

Swap it in whenever you do an impeller service or notice a broken vane; the job takes five minutes and helps your F-series run cooler at every throttle setting. A tight, debris-free water path means longer pump life, steadier idle temps, and the confidence to idle through weedy flats without riding the gauge. Small cover, big protection for the heart of your Yamaha.