K&N parts matching STP SA11011 air filter

The STP SA11011 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many STP air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Richard Hackworth, Lexington, Kentucky
Fits perfectly and has increased my gas mileage.
Mike S, Massachusetts
Fits better than stock filter. Definitely noticed more power and slight increase in throttle response on my turbocharged BMW 335i. Faster spool up and noticeably harder pulls under full throttle. I've been using K&N filters on my turbocharged cars for 15 years, always with the same results. Best performance filters on the market.
Damian, Florida
Installed in 135i with no mods. Haven't noticed increased acceleration, but i think I'm getting slightly better mileage.
33-2458 K&N 33-2458 Replacement Air Filter
List Price: $94.39
Your Price: $60.99