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Product details
Part NameIgnition Knock Detonation Sensor
BrandWalker Products
Part Number242-1131
UPC00724620164835
Estimate Delivery Date
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If your vehicle is listed on the fitment table below, the product will fit your car - we guarantee it. All you need to do is to ensure that the vehicle's Year, Make, Model, Trim, and any other notes specified inside the fitment table are respected.
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.
Characteristics include:
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.
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.
Watch genuine customer videos showing their upgrades and honest results of similar products
Fitment Table
This product is compatible with these vehicles:
Year
Make
Model
Notes
Position
2006
Audi
A4
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2006
Audi
A4 Quattro
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2005
Audi
A4
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2005
Audi
A4
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2005
Audi
A4 Quattro
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2005
Audi
A4 Quattro
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2005
Audi
Allroad Quattro
2.7L
V engine
6 cylinders
3.19" bore
3.39" stroke
2005
Volkswagen
Passat
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2004
Audi
A4
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2004
Audi
A4
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2004
Audi
A4 Quattro
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2004
Audi
A4 Quattro
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2004
Audi
A6
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2004
Audi
A6 Quattro
2.7L
V engine
6 cylinders
3.19" bore
3.39" stroke
2004
Audi
A6 Quattro
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2004
Audi
Allroad Quattro
2.7L
V engine
6 cylinders
3.19" bore
3.39" stroke
2004
Volkswagen
Passat
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2003
Audi
A4
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2003
Audi
A4
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2003
Audi
A4 Quattro
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2003
Audi
A4 Quattro
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2003
Audi
A6
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2003
Audi
A6 Quattro
2.7L
V engine
6 cylinders
3.19" bore
3.39" stroke
2003
Audi
A6 Quattro
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2003
Audi
Allroad Quattro
2.7L
V engine
6 cylinders
3.19" bore
3.39" stroke
2003
Volkswagen
Passat
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2002
Audi
A4
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2002
Audi
A4
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2002
Audi
A4 Quattro
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2002
Audi
A4 Quattro
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2002
Audi
A6
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2002
Audi
A6 Quattro
3.0L
V engine
6 cylinders
3.25" bore
3.65" stroke
Color-Blue
Harness Length 540mm
2002
Volkswagen
Passat
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2001
Audi
A4
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2001
Audi
A4 Quattro
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2001
Volkswagen
Passat
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Color-Blue
Harness Length 540mm
2000
Volkswagen
Passat
1.8L
Inline engine
4 cylinders
3.19" bore
3.40" stroke
Engine code AUG
Color-Blue
Harness Length 540mm
See what other customers say:
Customer Reviews
Overall rating: 4.9 / 5 from 594 reviews.
I love PartsPioneer. The rear-wheel Positive Plus pads and Genius rotors fit perfectly on my 2019 Subaru Forester. Excellent quality at a fair price. Highly recommended.
Thanks for catching an error in my order and righting it for me, complete with email to say so! This … is what customer service head and shoulders above, looks like !! Well done all !!
Service was great, appreciated the phone call to confirm the vehicle. Parts arrived quick. OEM fit. Will be ordering brakes as you can see by the picture. Very impressed.
I have bought this rotor on part pioneer for my Q3 and installed and used for over a week, they are amazing no squeaks no noises brakes have improved 110%. This rotors are the best so far I’ve always bought rotors and used in all three of my cars and so far these ones are the best that I have ever bought.
Thanks
Renato
Awesome parts, for a great deal, and the customer service is second to none, always willing to help, and they double check fitment to ensure you always get the right parts! Will definitely be ordering again.