what is a knock sensor for

Automotive Wiring Harness Dual Knock Sensor and Connector Harness for Chevrolet GM LS

Knock Sensor ZJ01-18-921 E1T50371 ZJ0118921 for CR19 6 1.3 2.0 2.3 Engine

Knock Sensor 574-8679 5748679 Compatible For Caterpillar G3516C G3606 G3612 G3616 Generator

For Ford Transit V348 V362QS 1S7A 12A699BB-N Knock Sensor 1S7A 12A699BB

30757381 Knock Sensor SGS Womala 2011-2018 Auto Parts S60 S80

ZPY 06A905377C Knock Sensor with Wiring for VW Audi A3

1 Pin 1 Way Toyota 2JZ Knock Sensor Connector Plug 7283-1015-10 90980-11166

LR008877 Auto Engine Parts Engine Knock Sensor Range Rover 2010-2012

Knock Sensor 574-8674 142-0215 For CAT G3508 G3516B G3520B

Knock Sensor FOR ISUZU JAC T6 OEM 1026603GAA

1990-1996 Nissan Car Sensor Parts Knock Sensor 2206030P00

OE LR008877 Knock Sensor Auto Parts Accessories Engine Knock Sensor For Range Rover 2010-2012 Range Rover Sport

Auto Parts Knock Sensor Sensor Assembly-Knock OEM 39250-2G100 For Hyundai

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PCB Material Digital LED Knock Sensor Module Black Color For DIY Project

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Engine Ignition Knock Detonation Knock Sensor for car 8961550010 89615-50010 For Toyota Camry 2.4L Lexus RX330 3.3L..

longyue Knock Sensor Harness Part For Subaru Legacy Impreza Outback Forester 99-02 12"

Car Knock Sensor 30530 Honda Civic Alternator Accord City Fit

2 Connectors Diesel Knock Sensor For BOSCH NISSAN 0986JG0830 22060-30P00 22060-30P00A