K&N parts matching Luber-Finer AF3940 air filter

The Luber-Finer AF3940 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Luber-Finer air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
George Cambria, Brooklyn, New York
Awesome filter in my S5 with Stage 1+ 2, with supercharger pulley upgrade, made a big difference in air flow to the supercharger in low and high speed acceleration.
Umar Rashid, Bradford England
Brilliant filter, has really improved performance, not massively, but there’s less lag, and slightly more power. More speed out of the revs. Has a healthy grunt too. The only thing I would say is I used to fill up around £50-60 a week, I’m now filling up around £60-70 a week, so the car is now a little thirstier, but that’s expected from a 3 litre V6. Thank you K&N. Love the air filter and the gains.
Jerry Barrett, Bedford, United Kingdom
Excellent device and product. I would recommend them to anyone.
E-1987 K&N E-1987 Replacement Air Filter
List Price: $102.79
Your Price: $65.99