Carquest Knock Sensor, SBC4239
In stock
$113.99
Listed as compatible with this vehicle by the retailer feed.
Check price2004 Audi A4 Sensors
45 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Carquest New Mass Air Flow Sensor - Sensor Only, MQ6219
In stock
$122.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest ABS Wheel Speed Sensor, ARA1962
In stock
$123.99
Listed as compatible with this vehicle by the retailer feed.
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Delphi Engine Crankshaft Position Sensor, SS10812
In stock
$132.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest New Mass Air Flow Sensor - Complete Assembly, MQ7372
In stock
$138.99
Listed as compatible with this vehicle by the retailer feed.
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Delphi Mass Air Flow Sensor, AF10157
In stock
$174.99
Listed as compatible with this vehicle by the retailer feed.
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Hitachi Mass Air Flow Sensor, MAF0036
In stock
$183.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest Voltage Regulator, RAA1104
In stock
$196.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest ABS Wheel Speed Sensor, ARC3217
In stock
$199.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest ABS Wheel Speed Sensor, ARA3222
In stock
$209.99
Listed as compatible with this vehicle by the retailer feed.
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Delphi Mass Air Flow Sensor, AF10149
In stock
$223.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest Voltage Regulator, RAA1192
In stock
$258.99
Listed as compatible with this vehicle by the retailer feed.
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Bosch Pressure Sensor, 0261230266
In stock
$32.99
Listed as compatible with this vehicle by the retailer feed.
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Dorman Crankshaft Position Sensor, 962-523
In stock
$44.99
Listed as compatible with this vehicle by the retailer feed.
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Bosch Crankshaft Position Sensor, 0261210177
In stock
$92.99
Listed as compatible with this vehicle by the retailer feed.
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Hella Mass Air Flow Sensor - 5-Pin Connector - Bolted, 009149051
In stock
$141.99
Listed as compatible with this vehicle by the retailer feed.
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Huf North America Tire Pressure Monitoring System (TPMS) Sensor, RDE048V21
In stock
$174.99
Listed as compatible with this vehicle by the retailer feed.
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Cardone Remanufactured Mass Air Flow Sensor, 74-10094
In stock
$119.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest PCV Valve, PCA1183
Out of stock
$29.99
Listed as compatible with this vehicle by the retailer feed.
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Bosch Mass Air Flow (MAF) Sensor, 0280218063
Out of stock
$169.99
Listed as compatible with this vehicle by the retailer feed.
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Carquest Voltage Regulator, RAA3356
Out of stock
$539.99
Listed as compatible with this vehicle by the retailer feed.
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This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.