Only fits the 2013 Altima 2.5L
The first step in upgrading your car's performance is to replace the restrictive
stock air box with a STILLEN Hi-Flow Intake.
Additional air flow
increases the engine's efficiency and power output by increasing the quantity of
the air/fuel ratio. The STILLEN Hi-Flow consists of a K&N cone filter that
incorporates a velocity stack which uses the venturi effect to accelerate air
Power and throttle response will improve throughout the
entire RPM range. Your best dollar-per-horsepower investment by far! Most people
find the authoritative note of the intake pleasing, but note that increased
noise levels will result.
Most STILLEN Hi-Flow Intakes are CARB Approved,
while others are currently CARB Pending, and may not be 50 state legal until
approved. Clean your filter regularly for best results.