The ACL main bearing set for Mazda 4‑cylinder 1991cc FS engines (1993–2002) is a crankshaft main bearing kit that provides replacement main bearings for the engine. Matched to the FS engine displacement and the listed model years, this full set is intended for rebuilds and repairs on the specified Mazda applications to restore correct bearing fitment and reliable crankshaft support.

ACL Mazda 4 1991cc FS 1993-02 Engine Crankshaft Main Bearing Set