Alpina B4s Replacement Air Filters

Buy now from K&N's Online Store and get a 100% money back guarantee on any Alpina B4s air filter!

  • Designed to Increase Horsepower and Acceleration
  • High Air Flow with Excellent Filtration
  • Top Performance Accessory for Alpina B4s Models
  • K&N Million Mile Limited Warranty®

Order your K&N replacement air filter Factory Direct today! Help your Alpina B4s run better. Fast and FREE SHIPPING with any Alpina B4s air filter

  1. 2023 Alpina B4s 3.0L L6 Gas air filter
    Special Price 377,39 zł Regular Price 503,19 zł
    33-3136
    K&N
  2. 2022 Alpina B4s 3.0L L6 Gas air filter
    Special Price 377,39 zł Regular Price 503,19 zł
    33-3136
    K&N
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