Knock Sensor Replacement for MERCURY MARINE #805544T, OMC/VOLVO #3854512 - WK-242-1017- Walker:
> Detects engine block vibrations caused from engine knock
> Sends a signal to the computer to retard ignition timing
> Symptoms of failure include engine knock, and or loss of power
> Recommended service is to check the connection and signal from the sensor or when engine knock or pinging develops
> Manufactured to meet or exceed OEM standards and specifications
> Replaces:
> Mercury: 805544T
> Volvo Penta: 3854512
> OMC: 3854512
> Sierra: 18-7703