Regitar USA Knock Sensor f/Mercruiser Inboard Engines: MCM V-6 V-8 (305, 350 496 CID) MPI Engines w/ECM 555 [RMH001] Brand_SEEKR by Caframo Anti-fouling properties: Tritonium-coated lens

Anti-fouling properties: Tritonium-coated lens

Ronstan Series 100 Orbit Blocks

Mounting screws included

Length: 1 9/32 in

The Rail Mount allows the grill to hang outside or inside the boat's rail

Regitar USA Knock Sensor f/Mercruiser Inboard Engines: MCM V-6 V-8 (305, 350 496 CID) MPI Engines w/ECM 555 [RMH001] Brand_SEEKR by Caframo Anti-fouling properties: Tritonium-coated lensKnock Sensor for Mercruiser Inboard Engines: MCM V 6 & V 8 (305, 350 & 496 CID) MPI Engines with ECM 555 Knock Sensor for Mercruiser Inboard Engines: MCM V 6 & V 8 (305, 350 & 496 CID) MPI Engines with ECM 555. Engine Brand: Mercury Mercruiser Fitment: Mercruiser 5. 7L 8. 2L Mariner 135HP 300HP Brochure (pdf)