WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.The APR High-Flow Intake Filter (RF100024) is a premium "drop-in" performance upgrade for the legendary PQ34 (MK4) platform. Designed to replace the restrictive, mass-produced paper filter found in your factory airbox, this filter utilizes APR’s proprietary washable cotton-gauze media. By reducing intake pressure drop, your engine can breathe more efficiently, resulting in sharper throttle response and improved turbocharger spool on forced-induction models.
Every APR filter is flow-bench optimized to ensure it provides maximum airflow without compromising engine protection. Because the cotton-gauze material is washable and reusable, this represents a one-time investment that will likely outlive the vehicle itself. It is the perfect "stealth" upgrade for MK4 enthusiasts looking to improve performance and slightly enhance the engine's natural induction sound while maintaining a 100% factory engine bay appearance.
Key Features:
- Direct Drop-In Fitment: Precision-sized at 353mm x 181mm to fit perfectly in the factory MK4 airbox.
- High-Flow Media: Proprietary multi-layer cotton gauze flows significantly more air than standard paper filters.
- Washable and Reusable: Environmentally friendly and cost-effective; designed to be serviced and reinstalled for the life of the engine.
- Sharper Response: Reduces turbo lag on 1.8T/1.9TDI models and improves throttle response on naturally aspirated engines.
- Flow-Bench Optimized: Engineered to maximize the efficiency of the factory intake tract across all flow rates.
- Multi-Fuel Compatible: Suitable for gas, diesel (TDI), and ethanol-equipped vehicles.
- Emissions Safe: A direct replacement part that will not trigger a check engine light or impact emissions compliance.
Technical Specifications:
| Specification | Details |
|---|---|
| Dimensions | 353 mm x 181 mm |
| Filter Material | Proprietary Cotton-Gauze (Oiled) |
| Pressure Drop | Significantly lower than OEM paper |
| Maintenance | Washable / Reusable for life |
Service Note: To maintain peak airflow, APR recommends cleaning and re-oiling the filter every 15,000–20,000 miles (more frequently in dusty environments) using a dedicated APR Filter Cleaning Kit.
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