LawnFlite-Pro 51001-279 Spare Part - Case

51001-279 — Left-hand gear case / gearbox housing (direct-replacement housing for the blade/transmission gear assembly). This sturdy gear case is the outer housing that holds the pinion, thrust plate and seals; it’s supplied as the left-side gearbox shell and is sold under part number 51001-279..

Fits a range of lawnmower/transaxle applications from Cobra, Danarm/Kaaz, Lawnflite and related machines — for example Cobra RM48SPK, RM53SPH and RM53SPHPRO; Danarm/Kaaz LM5360HXR, LM5360HXAR (and PRO variants), TN2160SXARH (and PRO); Lawnflite 448HR/448KJR/448KR/448SJR and 553HRS / 553HRS-PRO — it also appears in Shanks / Iseki gearcase assemblies with the same reference.

Why this part helps: replacing a cracked or stripped gearbox housing restores correct gear alignment and allows you to reseal the gearbox and refit the original internal gears and seals, so your machine’s drive and blade rotation return to factory geometry without having to replace the entire gearbox assembly. When verifying fitment, match the 51001-279 number against your machine’s parts diagram or MTD spare parts listings and the model plate to be certain.

What you’ll get: the left gear-case housing (51001-279) ready to accept the original internal gears, seals and fasteners — a direct-fit housing intended to replace a damaged case so you can complete the repair and get the mower back to service.