Outerwears Water Repellent Tapered Oval Pre-Filter Cover For K&N RF-1040 Universal Clamp-On Filter

Note: We stock black. All other colors are special order and take a couple weeks to get. Any special order color is NOT REFUNDABLE. Special order colors will be shipped separately from the rest of your order.

Check out Outerwear's Hydrophobic material in action

How To Read Outerwears Prefilter Part Numbers:

Prefix 10-1685-01 = Standard Material
Prefix 20-1685-01 = Water Repellent Material

Outerwear's Pre-filters are designed to enhance the efficiency of any performance or exposed air filter. The Pre-filter is constructed with a proprietary polyester mesh with uniform micron openings, treated with an optional hydrophobic water-repellent process. The mesh is UV resistant, filters debris down to .005", is shatter proof in freezing temperatures, and resistant to heat up to 450 degrees. The material is puncture resistant and has elasticity characteristics allowing the threads to return to the original position in the event the threads have been impacted or shifted. The manufacturing process incorporates a welded seam for strength, or reinforced industrial grade thread to fill needle holes and to reduce potential failure points in the material. The top seam utilizes specialized thread and cording (on larger covers with tops) to reinforce durability of the top. Six stock colors are available in either regular or the water-repellent variety. Pre-filters are designed to deflect the damaging debris, such as sand, which clogs air filters, compromising peak air-flow and horsepower. The Pre-filter also extends the time between servicing intervals reducing costs and increasing convenience for the consumer. conical r2c knn k&n