Performance Air Filter for Volkswagen Beetle/Golf IV/Jetta III/Passat

Precision Induction Optimization for the VW 2.5L 07K Engine

Who It’s For: Engineered for Volkswagen Beetle, Jetta, and Golf owners running the 2.5L CBTA, CBUA, or CCCA five-cylinder powerplants who are tired of the stock engine’s sluggish off-the-line response.

The Symptom: The Volkswagen 2.5L is a unique engine with a distinct tonal profile, but from the factory, it often feels like it’s breathing through a straw. The OEM paper filter is designed with high-density fibers to meet long service intervals, which creates a massive pressure drop across the intake tract. For the driver, this translates to a delayed throttle "snap" and a muted engine note that hides the soul of that five-cylinder rhythm. When you’re trying to merge into fast-moving traffic or climbing a grade, that restrictive factory airbox becomes a bottleneck for torque production.

The Engineering Fix: This BMC performance filter replaces the restrictive paper media with a multi-layered cotton gauze soaked in low-viscosity oil. By utilizing a "Full Moulding" system, the entire filter is produced from a single mould with no welded joints, ensuring the structural integrity of the seal within your airbox. This design allows for a significantly higher air velocity and increased oxygen density, capturing impurities as small as 7 microns while outperforming the OEM 10-micron filtration standard. The result is a more efficient combustion cycle and a noticeable improvement in fluid dynamics throughout the intake plenum.

Why Mechanics Choose This Kit

• Enhanced Flow Dynamics: Reduces air resistance compared to traditional paper filters, allowing the 07K engine to reach its peak volumetric efficiency faster.
• Induction Resonance: By smoothing out the airflow, you’ll notice a deeper, more refined induction roar under heavy load, finally letting that 2.5L engine be heard.
• Superior Filtration: The epoxy-coated alloy mesh protects against petrol fumes and oxidation, while the cotton layers trap finer particulates than the stock equipment.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• Volkswagen BEETLE / BEETLE CABRIO (5C) 2.5 V5 (2011 > 2019)
• Volkswagen GOLF VI / CABRIO VI / GOLF PLUS (5K1/5, AJ5, 5M1, 517, 521) 2.5 V5 (2009 > 2011)
• Volkswagen JETTA III (1K2) 2.5 V5 150HP (2005 > 2010)
• Volkswagen JETTA III (1K2) 2.5 V5 170HP (2007 > 2010)
• Volkswagen JETTA IV (162) 2.5 V5 (2011 >)
• Volkswagen PASSAT (362, 365) / PASSAT CC (357) 2.5 V5 (2012 >)
• Volkswagen RABBIT V (A5) 2.5 V5 (2007 > 2009)

Interchange Part Numbers:

FB725/20, B: 430mm, A: 128mm, CBTA, CBUA, CCCA, 1K2, 162, 1K1, 5C, 5K1, 5K5, AJ5, 5M1, 517, 521, 362, 365, 357

The Performance Promise

Buy with confidence. This is a lifetime component. Unlike paper filters that end up in a landfill, this BMC unit is fully washable and regenerable. Backed by real automotive experts and fast shipping to get your VW back on the road with the breath of fresh air it deserves.