Ignition Knock (Detonation) Sensor

Part Number 242-91018 (117547707)

UPC: 724620126925

Package contents: 1 Each per Box

Select vehicle for guaranteed fit

Color

$38.33

In stockShips by 6th Nov

Description

Walker Products Ignition Knock (Detonation) Sensors are OE Replacement components that monitor engine vibrations to detect knocking or detonation events. These sensors are a critical part of the engine control system, allowing the ECU to adjust ignition timing in real time to prevent spark knock—a condition that can cause internal engine damage, reduced fuel economy, and drivability issues. Walker Knock Sensors are engineered to match OE specifications for frequency range, sensitivity, and electrical output. Each unit is tuned to detect the specific resonant frequency of knock in a given engine platform, enabling precise spark retard when knock is detected. Built from high-quality, heat- and oil-resistant materials, these sensors are designed to endure the harsh conditions of the engine block and cylinder head. With exact OE fitment, Walker Knock Sensors install directly into the original threaded locations and connect using factory-style electrical terminals. Whether addressing a fault code (e.g., P0325, P0330), correcting timing issues, or replacing a failed sensor, Walker Knock Sensors restore proper knock detection, improve engine safety, and support optimal ignition performance across a wide range of gasoline applications.

Fitment

This part fits the following vehicles.

Buick

1983-1988 Century
1996 Commercial Chassis
1983-1987 Electra
1983-1988 LeSabre
1983-1987 Regal
1983-1987 Riviera
1991, 1996 Roadmaster
1983-1987 Skyhawk
1983-1988, 1993-1995 Skylark
1986-1987 Somerset

Cadillac

1991-1992 Brougham
1996 Commercial Chassis
1996 Fleetwood

Chevrolet

1993-1994 Beretta
1987 Blazer
1983-1984, 1986 C10
1988-1993, 1995-1999 C1500
1983-1986 C20
1988-1993, 1995-1998 C2500
1983-1984 C30
1983-1992, 1995-1997 Camaro
1984-1993, 1996 Caprice
1995 Cavalier
1984-1986, 1991-1994, 1996 Corvette
1983-1987 El Camino
1996-2002 Express 1500
1996-2002 Express 2500
1983-1992 G10
1983-1992 G20
1983-1986 G30
1985, 1996 Impala
1983-1986 K10
1988-1993, 1995-1999 K1500
1983-1985 K20
1988-1993, 1995, 1998 K2500
1983-1984 K30
1990-1995 Lumina APV
1983 Malibu
1983-1988 Monte Carlo
1983-1984 P20
1983-1984 P30
1987 R10
1987 R20
1983-1984, 1986-1993 S10
1983-1984, 1986-1989 S10 Blazer
1987 V10

GMC

1981, 1983-1986, 1988-1993, 1995-1999 C1500
1983-1986 C1500 Suburban
1983-1986, 1988-1998 C2500
1983-1986 C2500 Suburban
1983-1984, 1986 C3500
1983-1987 Caballero
1983-1992 G1500
1983-1992 G2500
1983-1985 G3500
1983-1987 Jimmy
1983-1986, 1988-1993, 1995-1999 K1500
1983-1984 K1500 Suburban
1983-1984, 1988-1995, 1998 K2500
1984 K2500 Suburban
1983-1984 K3500
1983-1984 P2500
1983-1984 P3500
1987 R1500
1987 R1500 Suburban
1987 R2500
1983-1984, 1986-1990 S15
1983-1984, 1986-1989 S15 Jimmy
1985-1991 Safari
1996-2002 Savana 1500
1996-2002 Savana 2500
1991-1993 Sonoma
1987 V1500

Isuzu

1991-1992 Pickup
1991-1993 Rodeo
1989-1991 Trooper

Oldsmobile

1994-1995 Achieva
1985-1987 Calais
1983-1987, 1992 Custom Cruiser
1983-1988 Cutlass Ciera
1983 Cutlass Cruiser
1983-1987 Cutlass Supreme
1983-1988 Delta 88
1983-1987 Firenza
1983-1984 Omega
1990-1994 Silhouette
1983-1987 Toronado

Pontiac

1983-1986 6000
1983-1988 Bonneville
1984-1987 Fiero
1983-1992, 1995-1997 Firebird
1985-1987, 1993-1995 Grand Am
1983-1987, 1994 Grand Prix
1983 J2000
1983-1986 Parisienne
1983-1984 Phoenix
1987 Safari
1995 Sunfire
1990-1995 Trans Sport

Features & benefits

Built for Harsh Environments: Engineered to resist heat, vibration, and oil exposure for long-lasting signal reliability.
OE Replacement Sensitivity: Calibrated to match factory frequency response and output for seamless ECU integration and spark control.
Exact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.
Detects Engine Knock: Monitors vibration frequencies to detect detonation and prevent pre-ignition engine damage.
Restores Ignition Timing Accuracy: Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.
Direct replacement - this ignition knock sensor is made to match the fit, function and performance of the original equipment on specified vehicles
Ideal solution - engineered to detect vibrations from knock and other combustion problems and replace a knock sensor that has failed
Durable construction - designed and manufactured to strict specifications for reliable performance
Trustworthy quality - backed by a team of product experts in the United States and more than a century of automotive experience

Specifications

Connector Gender	Female
Connector Quantity	1
Connector Shape	Circle
Country Of Origin	MX
Length	54.2000
Mounting Hardware Included	No
Street Legal	Yes
Terminal Gender	Male
Terminal Quantity	1
Terminal Type	Bullet
Wiring Harness Included	No

Warranty

1 Year

Magnuson-Moss Warranty Act

Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).