Ignition Knock (Detonation) Sensor

Part Number 242-1049 (117547792)

UPC: 724620074714

Package contents: 1 Each per Box

Select vehicle for guaranteed fit

Color

$10.23

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

2008-2009 LaCrosse
2007-2011 Lucerne
2005-2007 Rainier
2006-2007 Rendezvous
2005-2007 Terraza

Cadillac

2006-2007, 2009-2015 CTS
2007-2011 DTS
2007-2014 Escalade
2007-2014 Escalade ESV
2007-2013 Escalade EXT
2007-2009 SRX
2006-2010 STS
2006-2009 XLR

Chevrolet

2007-2013 Avalanche
2010-2015 Camaro
2011-2017 Caprice
2007-2012 Colorado
2005-2013 Corvette
2005-2009 Equinox
2008-2014 Express 1500
2008-2020 Express 2500
2008-2020 Express 3500
2006-2011 Impala
2016-2020 LCF 3500
2004-2010 Malibu
2006-2007 Monte Carlo
2007-2013 Silverado 1500
2007-2019 Silverado 2500 HD
2007-2019 Silverado 3500 HD
2014-2017 SS
2005-2006 SSR
2007-2014 Suburban 1500
2007-2013 Suburban 2500
2016-2019 Suburban 3500 HD
2007-2014 Tahoe
2006-2009 Trailblazer
2005-2006 Trailblazer EXT
2005-2008 Uplander

GMC

2007-2012 Canyon
2005-2009 Envoy
2005-2006 Envoy XL
2005 Envoy XUV
2008-2014 Savana 1500
2008-2020 Savana 2500
2008-2020 Savana 3500
2007-2013 Sierra 1500
2007-2019 Sierra 2500 HD
2007-2019 Sierra 3500 HD
2007-2014 Yukon
2007-2014 Yukon XL 1500
2007-2013 Yukon XL 2500

Hummer

2008-2009 H2
2007-2010 H3
2009-2010 H3T

Isuzu

2005-2008 Ascender
2007-2008 i-290
2007-2008 i-370

Pontiac

2005-2010 G6
2008-2009 G8
2005-2008 Grand Prix
2005-2006 GTO
2005-2006 Montana
2006-2009 Torrent

Saab

2005-2009 9-7x

Saturn

2007-2008 Aura
2005-2007 Relay
2008-2010 Vue

Features & benefits

Restores Ignition Timing Accuracy: Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.
Detects Engine Knock: Monitors vibration frequencies to detect detonation and prevent pre-ignition engine damage.
Exact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.
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.
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	Oblong
Country Of Origin	TW
Mounting Hardware Included	Yes
Street Legal	Yes
Terminal Gender	Male
Terminal Quantity	2
Terminal Type	Blade
Wiring Harness Included	No

Warranty

1 Year