The K&N RB-0700 is a round, straight universal clamp-on air filter built on K&N's reusable cotton gauze media. It measures 3.5 inches in outside diameter and 4 inches tall, with a 2.5-inch (64 mm) inside-diameter intake flange set at a 5-degree angle. Because it ships pre-oiled, a buyer can fit it straight from the box without a separate oiling step. For a carbureted race engine or a small-engine intake, that means a 2.5-inch universal air filter with a 5 degree angled flange and no disposable paper element to replace.
Compared with a disposable paper element, this filter's advantage is durability and lower long-term cost. The manufacturer describes several layers of cotton gauze treated with a tacking agent to trap contaminants, and it says the filter is built to be cleaned and reused rather than thrown away. The manufacturer also says the media is designed to improve horsepower and acceleration. No specific airflow or horsepower figure was confirmed for this part, so none is listed here. Buyers looking for a reusable cotton gauze air filter for a carburetor or velocity stack will find the reuse value is the main reason to pay more than a basic paper filter.
It is a universal filter, not a vehicle-specific part. The manufacturer says its universal line covers a wide range of applications, so fitment depends on whether your intake's inside diameter and flange angle match the filter's 2.5-inch, 5-degree flange.
No. The manufacturer says the filter is pre-oiled and ready for use.
The manufacturer states that the element only needs cleaning about every 75,000 miles under normal highway driving. Published cleaning intervals vary, so confirm with the manufacturer for your specific use.
The manufacturer describes installation as easy, and this is a bolt-on style swap rather than a machining job. Because the filter is universal, measure your carburetor throat or intake collar before you order and confirm it matches the 2.5-inch inside diameter and the 5-degree angled flange. Some setups may need a modification to seat the filter properly. Install instructions specific to this part were not found during research, so follow your engine builder's guidance for clamping and sealing.
