The K&N High-Flow Original Universal Air Filter (RU-4550) is a premium, high-performance, washable, and reusable air filter that boosts horsepower, improves acceleration, and enhances overall engine performance. With up to 99% filtration efficiency, this filter features a multi-layer cotton gauze design that provides superior protection against harmful contaminants while ensuring optimal airflow. Its durable construction ensures a long service life, and it only requires cleaning every 75,000 miles under normal highway driving conditions. Easy to install and pre-oiled for immediate use, this universal fit air filter is perfect for a variety of vehicles and applications. Additionally, its eco-friendly design reduces waste by being reusable, and it’s backed by a 1-Year Limited Warranty for peace of mind.
Key Features:
- Engineered Power: Increases horsepower and acceleration for superior engine performance.
- 4 Layers of Protection: High-quality cotton gauze layers deliver maximum filtration efficiency and trap contaminants.
- Rugged Construction: Made from durable materials for long-lasting performance.
- Long Service Life: Requires cleaning every 75,000 miles under normal highway driving conditions.
- Easy Installation: Pre-oiled and ready for quick installation.
- Universal Fitment: Compatible with a wide range of vehicles and applications.
- Eco-Friendly: Washable and reusable, helping reduce waste from disposable filters.
- Warranty: 1-Year Limited Warranty for added confidence.
Specifications:
- Material: Cotton Gauze
- Air Filter Shape: Round Tapered
- Flange Inside Diameter: 4 in (102 mm)
- Base Outside Diameter: 5.375 in (137 mm)
- Top Outside Diameter: 4.5 in (114 mm)
- Height: 6 in (152 mm)
- Flange Length: 0.625 in (16 mm)
- Filter Re-Oiling Amount: 1.06 oz (31 ml)
- Weight: 1.3 lb (0.6 kg)
- Efficiency: Up to 99% filtration efficiency
- Warranty: 1-Year Limited
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