1Application: Outboard engine rev limiter is suitable for Outboard Motor 30HP 50HP 60HP 75 90 HP, the rev limiter can be easily installed, requiring minimal time and effort.2OE Numbers: 821889A19, 821889A22, 821889A28, 821889A29, 821889A34, 821889A38, 821889A40, 821889A41, 821889A42, 821889A45, 821889A46, 821889A47, 821889A49, 821889A50, 821889A51, 821889A53.3Engine Protection: The outboard motor rev limiter is designed to protect the engine from excessive RPMs, preventing potential damage and extending the engine's lifespan.4Enhanced Performance: The rev limiter ensures optimal performance by limiting the engine's revolutions, allowing for smoother operation, improved fuel efficiency.5Direct Replacement: Original standard, the manufacturing in accordance with strict OE specifications, direct replacement, perfectly fit your car.