03974153 – Ariens® / Gravely® Wireform Belt Finger (Genuine OEM Part) The 03974153 is a genuine OEM Ariens® / Gravely® wireform belt finger, designed to help maintain proper belt tracking and belt-to-pulley alignment within mower deck belt drive systems. This formed steel guide is positioned near the deck pulleys to keep the belt correctly routed during engagement, heavy load operation, and rapid speed changes—supporting consistent blade drive performance and reducing the chance of belt derailment. Built to Ariens and Gravely factory specifications, the 03974153 belt finger provides precise clearance and durable strength for long service life in residential and commercial mowing environments. As a direct replacement OEM component, it restores original belt control and deck drive reliability. Key Details: Brand: Ariens® / Gravely® Manufacturer Part Number: 03974153 Part Type: Wireform Belt Finger (Belt Guide) Function: Guides and stabilizes mower deck belt to prevent belt jumping or misalignment Material: Formed high-strength steel wireform Application Area: Mower deck belt and idler/pulley system OEM Status: Genuine Ariens / Gravely replacement part Compatibility: The 03974153 wireform belt finger is used in “Mower Deck, Belt, and Idlers” and “Idlers and Sheaves” assemblies across many Ariens® zero-turn platforms, including ZT, ZTX, and ZT XL series models with multiple deck sizes. Ariens ZT Series (Deck Belt / Idlers): 915140 – ZT 34 (Briggs & Stratton, 34" Deck) 915142 – ZT 42 (Briggs & Stratton, 42" Deck) 915144 – ZT 50 (Briggs & Stratton, 50" Deck) 915146 – ZT 34 (multiple serial ranges) 915148 – ZT 42 (multiple serial ranges) 915150 – ZT 50 (multiple serial ranges) 915168 – ZT 34 CARB (multiple serial ranges) 915170 – ZT 42 CARB (multiple serial ranges) 915178 – ZT 42 Kohler (multiple serial ranges) 915180 – ZT 50 Kohler (multiple serial ranges) 915190 – ZT 34 (multiple serial ranges) 915192 – ZT 50 Kohler 915194 – ZT 34 CARB (multiple serial ranges) 915196 – ZT 42 CARB 915208 – ZT 34 CARB (34") 915210 – ZT 34 (34") 915212 – ZT 42 (42" & 50") 915214 – ZT 50 (42" & 50") 915232 – ZT 42 CARB (42" & 50") 915234 – ZT 50 CARB (42" & 50") 915244 – ZT 34 (34") 915246 – ZT 42 (42" & 50") Ariens ZTX Series (Idlers & Sheaves): 915172 – ZTX 42 (multiple serial ranges) 915174 – ZTX 52 (multiple serial ranges) 915176 – ZTX 42 CARB (multiple serial ranges) 915230 – ZTX 52 (multiple serial ranges) 915236 – ZTX 52 CARB (multiple serial ranges) 915248 – ZTX 42 (later serial ranges) 915250 – ZTX 52 (later serial ranges) Ariens ZT XL Series (Idlers & Sheaves): 915200 – ZT XL 52 (multiple serial ranges) 915202 – ZT XL 42 (multiple serial ranges) 915204 – ZT XL 52 (multiple serial ranges) 915206 – ZT XL 42 (multiple serial ranges) 915216 / 915218 – ZT XL 60 (multiple serial ranges) 915238 – ZT XL 42 CARB 915240 – ZT XL 52 CARB 915242 – ZT XL 60 CARB Zoom / CE Variants (Deck Belt / Idlers): 915327 – Zoom 34 CE / ZT 34 CE (multiple serial ranges) 915328 – Zoom 42 CE / ZT 42 CE (multiple serial ranges) The 03974153 Ariens / Gravely wireform belt finger is a key deck-drive guide component that supports correct belt routing, stable pulley engagement, and dependable mower deck performance on compatible Ariens and Gravely zero-turn platforms.
