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The K&N adapter 57-2535 (number 350) expands air filter compatibility by providing a simple, reliable mating piece for nonstandard intake openings. It enables K&N filters to be fitted where factory interfaces differ, making retrofits and special applications easier. Backed by K&N warranty, this adapter helps broaden filter options without altering core intake components.
K&N Adaptor 57-2535 Num 350
