Motive Gear F9.75-355 Differential Ring & Pinion For Ford 9.75" Ratio 3.55, 12-Bolt 31 Spline 11 Pinion & 39 Ring Tooth Fits Ford F-150 Expedition Lincoln Navigator Replaces 3L1Z4209CB, YG F9.75-355

Short Summary: The Motive Gear 161 F9.75-355 is a precision-engineered differential ring & pinion set designed for Ford 9.75" rear axles with a 3.55 gear ratio. This premium gear set offers reliable performance and durability for everyday driving, towing, and utility use.Key FeaturesGear Ratio: 3.55Ring Gear Tooth Count: 39Pinion Gear Tooth Count: 11Pinion Spline Count: 31Ring Gear Diameter: 9.75"Material: 8620 SteelBolt Count: 12-BoltVehicle CompatibilityFord1997–2014 F-1501997 F-250 / F-250 HD1999 F-250 Super Duty2004 F-150 Heritage1997–2011 Lobo2002–2014 E-150 / Econoline1998–2002 E-250 Econoline2010–2013 Econoline Van & Wagon2015–2018 Transit-150 / Transit-250 / Transit-3501997–2003, 2005–2011 ExpeditionLincoln1998–1999, 2002–2004, 2006–2007, 2010, 2012–2014 Navigator2002 Lincoln Blackwood2007–2008 Lincoln Mark LTReplaces OEM & Aftermarket Part NumbersFord: 3L1Z-4209-CB, 4L3Z4209BA, 5L3Z-4209-E, 8L3Z4209K, 8L3Z4209KA, 8L3Z4209QYukon Gear: YG F9.75-355, 24434EXCEL from Richmond: F975355Nitro Gear: F9.75-355-NGDorman: 697-331Pro-King: 763B730SVL: 2020861, DS2020861Warranty & Quality Assurance This Motive Gear product is backed by a 1-Year or 50,000-Mile Warranty. Manufactured to strict standards with 8620 steel for superior wear resistance and performance in demanding conditions. A trusted solution for restoring or upgrading your Ford's drivetrain.

• Premium 3.55 ratio differential ring & pinion set for Ford 9.75" 12-bolt axles; ideal for daily driving or light towing needs.
• 11-tooth pinion and 39-tooth ring gear with 31-spline pinion and 8620 steel construction for added strength and quiet operation.
• Designed for OE replacement on rear differentials in Ford F-150, Expedition, Transit, and Lincoln Navigator models.
• Built to OEM specs with a 1-Year or 50,000-Mile Warranty from Motive Gear, a trusted name in drivetrain performance.
• Interchangeable with OE and aftermarket part numbers from Ford, Yukon, EXCEL, Dorman, Nitro Gear, and more.