Ramair Replacement Filter for JSK-101-DD

Ramair Replacement Filter for JSK-101-DD (JS-090-BK)

The Ramair JS-090-BK is a direct replacement air filter for the Ramair JSK-101-DD induction kit. It is designed to fit into a flexible intake hose, such as a rubber or silicone intake pipe, and restore performance when your original filter is worn or dirty.

What this filter does

This cone-shaped filter uses twin layer foam to clean the air before it enters your engine. Cleaner air helps your engine run more smoothly and more efficiently. The foam element has a large surface area, which allows strong airflow while still trapping dust and dirt.

The filter has an aluminium ram-pipe neck and a built-in internal cone. This cone helps guide air smoothly towards the inlet manifold, cutting down on air turbulence. Less turbulence can mean more stable airflow to the engine, which is useful for both standard and tuned cars.

Key features and benefits

• Direct replacement for Ramair JSK-101-DD induction kits – no major changes needed if you already use this kit.
• Cone shape makes it easier to fit into tight engine bays where space is limited.
• Twin layer foam construction helps balance strong airflow with effective filtration.
• Aluminium ram-pipe neck with “bell mouth” style base to smooth incoming air.
• Stainless steel internal mesh supports the foam to stop collapse at higher flow rates.
• Suitable for both standard and tuned engines that need higher airflow than a stock panel filter.

Why it matters for performance

As an air filter gets dirty, it can restrict airflow and make the engine feel dull or less willing to pull at higher revs. Replacing a tired filter with a fresh Ramair foam filter can help restore lost response and keep intake sound and performance consistent.

The internal cone and bell mouth design are borrowed from motorsport-style setups, aiming to keep air moving smoothly into the engine. This is especially helpful on turbo engines that draw in a lot of air under boost.

Fitment and sizing

This filter is intended as a replacement for the Ramair JSK-101-DD kit, not as a universal cone filter. Check the neck size and overall dimensions against your existing filter if you are unsure.

Approximate dimensions:

• External neck diameter: 100 mm
• Filter height: 160 mm
• Neck length: 60 mm
• Filter base width: 200 mm
• Top width: 150 mm

For vehicle compatibility, please use the site’s vehicle lookup tool or check the “Vehicle Fitment” tab on this page.

Maintenance

This foam filter is reusable. With correct cleaning and oiling, it can last for many service intervals. Ramair recommend using their filter maintenance kit (CK-003) to clean and treat the foam. Regular maintenance helps keep airflow strong and filtration effective.

Note: Always allow the filter to dry fully after cleaning and re-oiling before refitting it to the car.