Yamaha - Lower Unit Assembly - F200 - F225 - 6FJ-45300-03-8D - SEE DESCRIPTION FOR APPLICABLE MODELS Sierra Gear Lube Fits select Mercury and Mercury

Fits select Mercury and Mercury Marine outboards requiring NGK IZFR5G spark plugs

I’ve seen engines that run fine at idle but struggle once things heat up under load

Marine gauge radio plus two 6

and seal damage under heat and moisture

It is commonly used across Yamaha marine and recreational engines where proper oil system protection and sealing are critical for performance and longevity

Yamaha - Lower Unit Assembly - F200 - F225 - 6FJ-45300-03-8D - SEE DESCRIPTION FOR APPLICABLE MODELS Sierra Gear Lube Fits select Mercury and MercuryYamaha Lower Unit Assembly Gearcase Component 6FJ 45300 03 8D Overview The Yamaha Lower Unit Assembly 6FJ 45300 03 8D is what keeps your power actually making it to the water. When a lower unit starts going bad, youll feel itnoise, vibration, or just not getting the push youre used to. This assembly handles everything from gear transfer to prop rotation, so it has to be solid. If youre replacing a damaged unit or dealing with gear issues, this is one