A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Oxygen Sensor 4 wire - all the same?

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Old Jul 3, 2011 | 05:18 AM
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Default Oxygen Sensor 4 wire - all the same?

My car has Bosch 02 sensors. One is bad (downstream).
Will any 4 wire 02 work?

I have a Standard SG1273 (no connectors) which is supposedly interchangeable with DENSO 2344209 / BOSCH 15733

Rockauto shows for my car:
Standard SG243
DENSO 2344667
BOSCH 13550

Aside from the connector, are there any differences between those 4 wire O2 sensors?
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Old Jul 3, 2011 | 06:04 AM
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I looked up on Bosch website, but could not find my AFC engine (1996, 2.8 V6). They list a ACK engine for 1996. For that engine, they list part number 0 258 986 507 as generic replacement.

Looking up that part number: UNIVERSAL 12 watt heater and ground isolated case

Most 1.8T list 0 258 986 505: UNIVERSAL 18 watt heater and ground isolated case

So: is the difference in the heater wattage?
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