This is a budget-friendly BSG (15-135-002) brand engine air filter designed for the gasoline M43 (1.9L) and M52/M54 (2.0L - 2.8L) engines of the BMW 3 Series E46 Sedan, Coupe, Cabrio, and Touring (1998-2005) vehicles. It reliably protects your engine from dust, sand, and particles during daily city use. When changed regularly, it allows the engine to breathe easily, keeps fuel consumption at an ideal level, and prevents damage to the sensitive Mass Air Flow Sensor (MAF Sensor).
- Economic Maintenance Solution: It is more affordable compared to premium (OEM) brands, allowing you to complete your periodic maintenance without straining your budget.
- Standard Filtration: Thanks to the cellulose-based filter paper, it filters harmful particles from the air, allowing only clean air to enter the engine cylinders.
- Optimum Combustion: A clean filter helps maintain the proper adjustment of the air-fuel mixture (stoichiometric ratio), preventing raw fuel dumping and performance losses.
- Perfectly Fitting Seal: The flexible polyurethane gasket around the filter fits snugly to the air intake, preventing unfiltered (leak) air from seeping in from the edges.
Technical Details
| Brand |
BSG Auto Parts (Equivalent / Imported) |
| Product Code |
15-135-002 |
| Possible OEM References |
13 72 1 730 449 / 13 72 1 744 869 |
| Compatible Engines (Gasoline) |
M43 (3.16i, 3.18i) / M52 & M54 (3.20i, 3.23i, 3.25i, 3.28i) |
| Shape Type |
Rectangular (Panel Type) |
Frequently Asked Questions (FAQ)
Can I install this filter on my BMW 3.20d diesel vehicle? **NO.** The air filter in the E46 chassis 3.20d (M47 engine) and 3.30d (M57 engine) diesel versions is cylindrical (round/tube) shaped. This panel (rectangular) filter only fits the air intakes of gasoline engines. You need to order a different reference code for diesel vehicles.
Is the BSG brand air filter sufficient? What is the difference compared to Mann or Mahle? BSG is an affordable equivalent brand. The paper quality, microfiber layer density, and dust retention capacity of premium brands like Mann or Mahle, which are original equipment (OEM) manufacturers, are much higher. However, under standard city conditions, on asphalt roads where dust is not very dense, as long as you change the filter **on time (every 10,000 km)**, the BSG brand will also protect your engine reliably.
What symptoms will occur if the air filter is clogged? A clogged air filter causes the engine to suffocate. The most obvious symptoms include increased fuel consumption, delayed response when pressing the gas (sluggishness), idle fluctuations, and a raw fuel smell (rich mixture) from the exhaust.
