The oil filter number most commonly used for a 2004 VW Passat 1.8T is VW part number 06A 115 561 A. This is the standard OEM filter for many 1.8T engines of that era, though suffixes can vary by production date and engine code.
Overview of the oil filter for the 2004 Passat 1.8T
In this generation, the Passat uses a cartridge-style oil filter housed in a dedicated filter assembly. The cartridge itself is replaced during maintenance, while the housing remains. Because VW used a few closely related part numbers over several model years, the exact suffix of the base number can differ depending on the vehicle’s production date and engine code.
OEM part numbers and suffix variations
The following list shows the base number used for the OEM oil filter, along with common suffix variations you might encounter. Use the suffix that matches your car’s production data to ensure a perfect fit.
- 06A 115 561 A
- 06A 115 561 B
- 06A 115 561 C
Suffixes are tied to specific production batches and engine codes. When in doubt, verify against your vehicle’s VIN or consult a parts retailer to confirm the exact suffix for your car.
Engine codes and suffix considerations
Various 1.8T engine codes used in Passats around 2004 (such as AW? or AWP-type variants) can influence which suffix is correct. If your engine code differs, the base number (06A 115 561) is still the starting point, but the trailing letter may vary to reflect a revision or a dealer-specific spec. Always cross-check with the VIN or a trusted parts catalog to lock in the exact suffix.
How to verify the right filter for your car
To ensure you buy the correct oil filter, follow these steps to confirm the exact part number for your specific vehicle configuration.
- Use your vehicle identification number (VIN) to pull the exact parts listing from VW’s official catalog or a reputable parts retailer.
- Check your engine code and production date to determine which suffix should apply (A, B, C, etc.).
- Compare the packaging and the listed part number with the OEM reference (06A 115 561 with the correct suffix) before purchasing.
Confirming with these steps helps prevent ordering the wrong variant, especially if a dealer or aftermarket supplier uses a slightly different suffix in their listing.
Tips and buying guidance
Consider these practical tips to make a reliable purchase and proper installation.
- OEM vs aftermarket: An OEM-numbered filter (06A 115 561 A, B, or C) is typically the safest choice, but reputable aftermarket brands often offer interchangeable options with the same base number and compatibility.
- Filter type: The 1.8T Passat uses a cartridge-style filter inside a housing. Ensure you get the cartridge element and the appropriate gasket for your housing.
- Where to buy: Check VW parts counters, authorized dealers, or established parts retailers. Always verify the exact suffix using your VIN to avoid cross-compatibility issues.
With the correct part number confirmed, installation follows standard maintenance steps: drain the oil, replace the cartridge and gasket, refill with fresh oil to the specified capacity, and check for leaks after starting the engine.
Summary
For a 2004 VW Passat 1.8T, the most common oil filter part number is 06A 115 561 A, with potential suffix variations (A, B, C) depending on production. Always verify the exact suffix against your VIN or a trusted parts catalog to ensure a precise match. This confirmation helps ensure proper fitment and reliable oil filtration for your engine.