The K&N 63-9031-1 is an AirCharger cold air intake for the 5.7L V8 in the Toyota Tundra. A high-density polyethylene (HDPE) rotationally-molded tube helps increase the volume of airflow to your engine, and the kit includes a red, oiled cotton-gauze conical filter. The manufacturer states the kit provides a guaranteed increase in horsepower and torque, but no specific gain figure was confirmed in the sources reviewed.
Buyers looking for a long-interval, reusable filter upgrade will find the value in the element itself. The manufacturer rates the oversized filter to go up to 100,000 miles between filter services under normal highway driving conditions, and it can be washed and reused. Keep in mind the kit is not legal for sale or use in California on any pollution controlled motor vehicle. Fitment is listed for the Tundra 5.7L V8, but year coverage varies across listings, so confirm your VIN-specific application before ordering a 2007-2011 Tundra cold air intake.
The manufacturer states that the kit is not legal for sale or use in California on any pollution-controlled motor vehicle.
The manufacturer rates the oversized filter for up to 100,000 miles under normal highway driving conditions. Because it is washable and reusable, it is cleaned and re-oiled rather than replaced at each service.
The manufacturer lists a typical installation time of around an hour, and mounting hardware is included in the kit. Plan on basic hand tools for the bolt-on work. Because year coverage differs between listings, check the fitment against your truck before starting, and confirm the install details with the manufacturer's install sheet.
