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Vehicle Info NeededWALKER PRODUCTSPART NUMBER: 948-242-1139
IGNITION KNOCK SENSOR
$8041
Ships on 11/03/2026
Lowest Price GuaranteeKnock Sensor1999-2005 Audi A4, A4 Quattro, A6, A6 Quattro, S4, Allroad Quattro, Volkswagen Passat Female Rectangle Connector Wiring Harness Included Sold Individually
The replacement knock sensor is made for select 1999-2005 Audi and Volkswagen applications. It detects the vibration frequencies of engine detonation so the engine computer can retard ignition timing.
Walker Products 242-1139 Knock Sensor Features:
- Fits 1999-2001 Audi A4, A4 Quattro; 2000-2001 Audi A6; 2000-2002 Audi A6 Quattro, S4; 2001-2002 Audi Allroad Quattro; 2000-2005 Volkswagen Passat
- Engine coverage includes 2.7L V6, 2.8L V6 applications
- Female rectangle electrical connector with 3 blade terminals
- 568 mm (22.4 in.) overall length
- 480 mm (18.9 in.) wiring harness
- Includes wiring harness
- Mounting hardware not included
Part TypeKnock Sensor
BrandWALKER PRODUCTS
Package Height2.62
Package Width2.81
Package Length22.36 in. (568mm)
Weight0.21 PG
Part CategoryReplacement Parts
Wiring Harness IncludedYes
Terminal GenderMale
Wiring Harness Length18.9 in. (480mm)
Terminal TypeBlade
Connector GenderFemale
Mounting Hardware IncludedNo
Terminal Quantity3
Part FitmentDirect Fit
Connector ShapeRectangle
Connector Quantity1
Vendor Part Number242-1139
Package Qty1
Package TypeEA
Some parts are not legal for use in California or other states with similar laws / regulations
