Take YOUR diesel engine to the next level with this high performance air filter SILENCER. Designed as a direct replacement for the Yanmar stock air filter, the robust construction make it the ideal upgrade for your 4BY marine diesel engine. Incorporates a metal housing to fit in same space as stock filter.
The filter assembly helps reduce high frequency turbo noise by 2-5 dBa. Designed for reliability…and durability, the Walker air filter element is corrosion resistant, to withstand the toughest marine environmental conditions.
This kit includes specially designed turbo interface hose, clamps, and washable Walker Everquiet air filter silencer.
Still not convinced?… New 4BY engines for new boats after 2014 now offer the Walker Everquiet Air Filter Silencer as a Yanmar factory installed option.
Walker Part# KWYAN4BY-1