Knock Sensor for MerCruiser V8, 500-575 Hp GM & MIE engines.

OEM: Mercury Replaces: Mercury 805544T

For 1991-2005 V8, 500-575 Hp GM & MIE engines.

also crosses with: Sierra: 18-7703 Mallory: 9-33500

OEM: Volvo Replaces: Volvo 3854512