Ignition Knock (Detonation) Sensor

Part Number 242-1027 (117547640)

UPC: 724620099397

Package contents: 1 Each per Box

Select vehicle for guaranteed fit

Color

$25.64

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.

BMW

2021-2024 228i Gran Coupe
2020-2024 228i xDrive Gran Coupe
2017-2025 230i
2017-2021, 2023-2025 230i xDrive
2016-2018, 2021-2024 330e
2021-2024 330e xDrive
2017-2024 330i
2017-2019 330i GT xDrive
2017-2024 330i xDrive
2016-2018 340i
2017-2019 340i GT xDrive
2016-2018 340i xDrive
2017-2024 430i
2017-2020, 2022-2024 430i Gran Coupe
2017-2024 430i xDrive
2017-2020, 2023-2024 430i xDrive Gran Coupe
2017-2020 440i
2017-2020 440i Gran Coupe
2017-2020 440i xDrive
2017-2020 440i xDrive Gran Coupe
2018-2023 530e
2018-2023 530e xDrive
2017-2023 530i
2017-2023 530i xDrive
2017-2021, 2023 540i
2017-2023 540i xDrive
2018-2019 640i xDrive Gran Turismo
2017-2019 740e xDrive
2016-2022 740i
2017-2021 740i xDrive
2020-2021 745e xDrive
2020-2025 840i
2020-2025 840i Gran Coupe
2020-2025 840i xDrive
2020-2025 840i xDrive Gran Coupe
2014-2017, 2019-2020 i8
2023-2025 M2
2020-2024 M235i xDrive Gran Coupe
2017-2021, 2023-2025 M240i
2017-2025 M240i xDrive
2021-2025 M3
2020-2024 M340i
2020-2024 M340i xDrive
2021-2025 M4
2021-2024 M440i
2022-2024 M440i Gran Coupe
2021-2024 M440i xDrive
2022-2024 M440i xDrive Gran Coupe
2017-2021 M760i xDrive
2016-2022 X1
2018-2023 X2
2018-2024 X3
2019-2025 X4
2019-2023 X5
2020-2023 X6
2019-2021 X7
2019-2025 Z4

Kia

1996 Sportage

Mini

2014-2024 Cooper
2016-2024 Cooper Clubman
2017-2024 Cooper Countryman

Porsche

1987-1991 944
1992-1995 968

Saab

1985-1989, 1991-1995 900
1986-1990 9000

Volvo

1987-1990 760
1987-1990 780

Features & benefits

Built for Harsh Environments: Engineered to resist heat, vibration, and oil exposure for long-lasting signal reliability.
Detects Engine Knock: Monitors vibration frequencies to detect detonation and prevent pre-ignition engine damage.
OE Replacement Sensitivity: Calibrated to match factory frequency response and output for seamless ECU integration and spark control.
Restores Ignition Timing Accuracy: Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.
Exact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.
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	Rectangle
Country Of Origin	CN
Length	44.1000
Mounting Hardware Included	No
Street Legal	Yes
Terminal Gender	Male
Terminal Quantity	2
Terminal Type	Blade
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)).