{"product_id":"gm-14-bolt-40-spline-steel-spool","title":"GM 14-Bolt 40 Spline Steel Spool","description":"\u003cdiv\u003e\n\u003cp\u003eMark Williams steel spools are precision machined from US Made 4140 steel forgings on CNC machinery for ultimate precision and accuracy. The ring gear register and bearing diameters are precision ground with the spool mounted on a special arbor to assure concentricity between the splines and the ground surfaces and final ground to ensures zero runout on the ring mounting surface. Engineered for maximum reliability, MW spools have an increased cross-section under the ring gear register to prevent ring gear deflection. MW spools are heat treated in-house with the same austemper through hardening heat treat process as our strongest in class MW Hi-Torque axles for ultimate strength.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eThe Mark Williams Advantage\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThrough hardened alloy steel, not egg-shell-thin hardened case\u003c\/li\u003e\n\u003cli\u003eRing gear mounting diameter is ground to precise press fit\u003c\/li\u003e\n\u003cli\u003eAll mounting diameters concentric and square within .001\"\u003c\/li\u003e\n\u003cli\u003eIncreased cross section and generous radius under mounting prevents deforming\u003c\/li\u003e\n\u003cli\u003eMade in the USA! Forged, Ground, Machined, and Heat Treated in the USA!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003cem\u003eNote requires MW C-Clip Eliminator kit or weld on housing ends and MW axles.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstructions \u003ca\u003eSB0046\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e \u003cem\u003eTo run 4.56 and numerically higher ratios on this spool you will need thick gears.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003eCut for standard  Dana 40 Spline axles\u003c\/li\u003e\n\u003cli\u003e4140 Through hardened steel\u003c\/li\u003e\n\u003cli\u003eUses 12\" bolts PN \u003ca\u003e14B-RG-KIT1\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeighs 25 pounds\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eService instructions can be found on Service Bulletin \u003ca\u003e#0046\u003c\/a\u003e.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mark Williams","offers":[{"title":"Default Title","offer_id":43900756131918,"sku":null,"price":594.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/8668\/7822\/files\/14B-SPL-30.600_20aab60c-a413-4568-bf78-c6e6f6326225.jpg?v=1782594779","url":"https:\/\/www.precisionautooffroad.com\/products\/gm-14-bolt-40-spline-steel-spool","provider":"Precision Auto \u0026 Offroad","version":"1.0","type":"link"}