An automotive breather accessory designed to stop oil-saturated crankcase vapour from re-entering the engine, Alpha Rider Valve Cover Breather Filter. Keeps engine bays cleaner and reduces the risk of intake contamination for K-series swap enthusiasts. Is compatibility with a specific K20 or K24 setup straightforward for your build?
⚡ At a Glance
- • Filtration Efficiency: Stainless steel and filter paper capture oil-laden vapour before it returns to the intake
- • Best for: Owners performing K-swap installs on Honda Civic, Integra and RSX platforms
- • Not ideal for: Engines requiring a sealed PCV system or specific OEM breather routing
Stainless steel construction combined with filter paper offers a washable, durable breather solution. Designed for 18mm mushroom-type valve cover outlets common on K20, K20A, K20Z and K24 installations.
Cleaner intake and combustion - with stainless steel and filter paper media
Filter paper traps oil droplets while the stainless steel housing holds the element and resists corrosion. The washable construction allows the element to be cleaned rather than replaced frequently.
Reduced oil contamination of the intake improves combustion consistency and keeps intake plumbing and MAF sensors cleaner for longer.
Durable, low-maintenance build - thanks to stainless steel body
Stainless steel resists rust and physical wear, while the lightweight design keeps added strain on valve cover outlets to a minimum. No specialised cleaning agents are required for routine maintenance.
Long service life and simple upkeep suit track-focused cars or daily drivers where frequent access to the engine bay is needed.
Quick fit for K-swap installs - with 18mm mushroom fitment and included clip
18mm sizing matches mushroom-style valve cover outlets and a supplied fixing clip secures the breather to standard hose or port diameters. Installation uses a screwdriver to adjust the clip tension, avoiding complex tools.
Fast, repeatable installations streamline engine swaps and allow easy removal for cleaning or inspection during maintenance.
✨ The 4 Key Reasons for Alpha Rider Valve Cover Breather Filter
- Stainless steel body, - Resists corrosion, remains lightweight for reliable long-term fit
- Filter paper element, - Captures oil vapour, reducing intake recontamination and fouling
- 18mm fitment, - Fits 18mm mushroom ports common to K20/K24 swaps without adapters
- Included fixing clip, - Allows quick, secure clamp attachment using a screwdriver for installation
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Brand: Alpha Rider
- Model: Valve Cover Breather Filter
- Fitment size: 18mm intake mushroom type
- Materials: Stainless steel and filter paper
❓ Frequently Asked Questions
Q: Will this fit my K20 or K24 valve cover mushroom outlet?
A: Compatibility covers K20, K20A, K20Z and K24 installations with an 18mm mushroom-type valve cover breather port, including many Civic, Integra and RSX K-swap setups.
Q: Does the breather stop oil vapour from returning to the intake?
A: Filter paper is designed to capture oil-saturated crankcase vapour and keep it from re-entering the intake, helping to reduce oil contamination.
Q: Is installation complicated or tool-heavy?
A: A fixed clip is supplied and the breather can be tightened or adjusted with a screwdriver, so no specialised tools or complex steps are required.
🏆 Our Verdict
Suitable for enthusiasts carrying out K-series swaps or those wanting a washable breather for routine maintenance, the product matches common 18mm valve cover outlets. Stainless steel construction combined with a filter paper element offers a practical balance of durability and filtration. Long-term value comes from reusable filtration and simple installation, making it a sensible choice for frequent maintenance or track use.
