General Site Questions   General Audi Questions   Engine Features   Performance   Engine Maintenance   Safety Features   Accessories   What is...   Audi 80/90 Specific   Audi 100/A6 Specific   Audi Coupe Specific What oil filter do I need? If your VIN ends in 8B_S_000544 or earlier, you need the smaller oil filter, which is Audi part number 034 115 561 A. If your VIN ends in 8B_S_000545 or later, you need the larger oil filter, which is Audi part number 078 115 561 D. This is important! The later oil filter has several new features: Dirty side anti-drainback valve with an opening pressure of 1.7 PSI Bottom bypass valve with an opening pressure of 36 to 50 PSI at 0.26 GPM Bypass filter screen to filter contamination once the filter goes into bypass Audi Cabriolet Specific   Audi A4 Specific

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