03972000 – Ariens® / Gravely® Trunnion .50-13 (Genuine OEM Part) The 03972000 is a genuine OEM Ariens® / Gravely® trunnion with .50-13 threading, designed for use in mower deck mounting and leveling assemblies on professional-grade zero-turn and stand-on mowers. This precision-machined component is critical for securing deck mounting arms, maintaining correct deck alignment, and ensuring stable cutting height adjustment during operation. Built to Ariens and Gravely factory specifications, the 03972000 trunnion provides long-lasting strength and reliable performance under continuous commercial mowing conditions. As a direct OEM replacement, it installs correctly without modification and preserves original deck geometry and durability. Key Details: Brand: Ariens® / Gravely® Manufacturer Part Number: 03972000 Part Type: Trunnion Thread Size: .50-13 Application: Deck mounting and leveling assemblies Material: Hardened steel OEM Status: Genuine Ariens / Gravely replacement part Compatibility: The 03972000 trunnion is widely used across Ariens® and Gravely® Pro-Turn® and Pro-Stance® series mowers, including multiple deck widths, engine configurations, and serial number ranges. Primary Applications Include: Gravely Pro-Turn® Series Pro-Turn 148 (48″ Deck) Pro-Turn 152 (52″ Deck) Pro-Turn 160 (60″ Deck) Pro-Turn 252, 260, 266, 272 Pro-Turn 452, 460, 466, 472 (Compatible with Kawasaki, Kohler EFI, CARB, Diesel, LP, RD, SD, and CE configurations depending on model and serial range) Gravely Pro-Stance® Series Pro-Stance 48 Pro-Stance 52 Pro-Stance 60 Pro-Stance 61 (Used in Deck & Mounting Arms, Deck Mount, and Deck Leveling assemblies) Representative Model Numbers Include (but are not limited to):991079, 991080, 991081, 991095, 991096, 991097991102, 991103, 991104, 991115–991127991300–991305992184–992327994111–994130 The 03972000 Ariens / Gravely Trunnion .50-13 is an essential structural component that helps maintain deck stability, proper cutting height, and consistent mowing performance across a wide range of professional Ariens and Gravely mower platforms.
