Ramair Panel Air Filter for VW Transporter T4

Ramair Panel Air Filter for VW Transporter T4 – RPF-1558

This Ramair panel filter is a direct replacement for the standard paper air filter in your VW Transporter T4 (and T4-based variants including the California and Caravelle). It fits straight into your existing airbox – no modifications needed – and offers improved airflow and filtration compared to the original paper element.

Ramair are a UK-based filter manufacturer with a strong reputation in both road and motorsport applications. This filter uses the same twin-layer foam construction found in their higher-end motorsport products, giving you a genuinely performance-focused upgrade at a sensible price point.

What Makes It Different to a Standard Paper Filter?

A standard paper filter does a reasonable job, but it restricts airflow as it loads up with dust and debris. Ramair’s dual-layer reticulated foam (an open-cell foam structure that traps particles while allowing air to pass through freely) flows more air to the engine while still filtering effectively. The result is a more responsive throttle feel and, in many cases, a modest improvement in engine efficiency – particularly noticeable on the turbodiesel engines these vans commonly run.

The filter is also MAF safe, meaning it will not interfere with your Mass Air Flow sensor – the sensor that measures incoming air and helps the engine management system calculate fuelling. Some cheaper aftermarket filters can contaminate or upset MAF sensors, so this is worth noting.

Construction and Quality

Ramair have built this filter with longevity in mind. Rather than a basic foam cut to shape, it features a stainless steel internal cage for structural support, and a rubber polymer surround that seals cleanly against your airbox – preventing unfiltered air from bypassing the filter element. The dimensions are fixed to guarantee consistent surface area across every unit produced.

• Twin-layer Ramair Aeriform foam – the same specification used in motorsport applications
• Stainless steel cage support for long-term durability
• Rubber polymer surround for a clean, secure fit in the OEM airbox
• MAF safe – will not contaminate or damage air flow sensors
• Washable and reusable – clean using Ramair’s maintenance kit CK-003
• Dimensions: 280mm (L) x 216mm (W), rectangular shape

Easy to Fit, Easy to Maintain

Fitting is as straightforward as changing a standard air filter. Open the airbox, remove the old paper element, and drop the Ramair filter in its place. No cutting, drilling, or remapping required. Because the filter is reusable, you simply wash it periodically rather than replacing it – making it a cost-effective upgrade over time. Ramair’s cleaning and re-oiling kit (CK-003) is available separately and is recommended to keep the filter performing properly.

Vehicle Fitment

This filter is designed to fit the VW Transporter T4, including the California