03971900 – Ariens® / Gravely® Mower Blade 17.35″ (Genuine OEM Part) The 03971900 is a genuine OEM Ariens® / Gravely® mower blade with an overall length of 17.35 inches, engineered to deliver clean, consistent cutting performance on select zero-turn mower decks. Designed to meet Ariens and Gravely factory specifications, this blade ensures proper airflow, balanced rotation, and efficient grass lift for a professional-quality cut. Manufactured from high-strength, heat-treated steel, the 03971900 mower blade offers excellent durability, edge retention, and resistance to impact under demanding mowing conditions. As a direct-fit OEM replacement, it installs without modification and maintains original deck performance and safety standards. Key Details: Brand: Ariens® / Gravely® Manufacturer Part Number: 03971900 Part Type: Mower Blade Blade Length: 17.35 inches Material: Hardened, heat-treated steel Function: Grass cutting and lift within mower deck OEM Status: Genuine Ariens / Gravely replacement part Compatibility: The 03971900 mower blade is used on multiple Ariens® zero-turn mower (ZT Series) models equipped with 34″, 42″, and 50″ cutting decks, including configurations with Briggs & Stratton, Kohler, and carbureted engines. Common Applications Include: ZT 34 models (standard and CARB versions) ZT 42 models (standard, CARB, and Kohler versions) ZT 50 models (standard, CARB, and Kohler versions) Representative Model Numbers:915140, 915142, 915144, 915146, 915148, 915150915168, 915170, 915178, 915180915190, 915192, 915194, 915196915208, 915210, 915212, 915214915232, 915234, 915244, 915246915288, 915290, 915344 This blade is referenced in deck assemblies listed under “Belt Covers and Blades” and “Deck, Belt, Blades, and Spindles” for the applicable Ariens ZT mower models and serial number ranges. The 03971900 Ariens / Gravely 17.35″ mower blade ensures optimal cutting performance while preserving the original engineering and reliability of your mower deck.
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