{"product_id":"suncoast-coa-12803-300m-alloy-input-shaft-12-5-8-turbo-splines","title":"Suncoast 300M Alloy Input Shaft, 12-5\/8\" - Turbo Splines","description":"\u003cp\u003e \u003c\/p\u003e\n\n\u003cp class=\"page-title\"\u003e\u003cstrong\u003e300M ALLOY INPUT SHAFT, TURBO SPLINE, 12-5\/8\" (FITS 1.82, 1.90, 1.94, 1.98, 2.08)\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003eThe Coan Racing COA‑12803 300M Alloy Input Shaft (Turbo Spline, 12-5\/8″) is a high-performance component engineered for GM Powerglide transmissions configured with turbo-style splined torque converters and low-gear ratios of 1.82, 1.90, 1.94, 1.98, and 2.08. Crafted from robust 300M alloy, this shaft offers substantial tensile strength and fatigue resistance, making it ideal for high-torque street and racing applications. It fits directly into cases tuned to the specified gear ratios without requiring machining or modifications, delivering a seamless upgrade path.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003eThe precision-machined turbo spline design ensures consistent engagement with the torque converter, while the durable alloy construction provides long-term reliability under extreme conditions, making the COA‑12803 an excellent choice for builders seeking enhanced drivetrain strength and dependable performance.\u003c\/p\u003e","brand":"Suncoast Performance","offers":[{"title":"Default Title","offer_id":48219452702961,"sku":"COA-12803","price":405.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/1344\/3057\/files\/300M-Alloy-Input-Shaft_-12-5-8_-Turbo-Splines-Suncoast-Performance-151323866.jpg?v=1779831732","url":"https:\/\/tamelessperformance.com\/products\/suncoast-coa-12803-300m-alloy-input-shaft-12-5-8-turbo-splines","provider":"TAMELESS PERFORMANCE","version":"1.0","type":"link"}