Manufactured by BDS Suspension | 123615 | 2017 Ford Superduty transfer case index ring, diesel, BDS Suspension, Indexing rings eliminate front driveline vibrations. Proper clearance prevents cross-member interference. Heavy duty steel construction for maximum strength. Designed with optimal spline engagement to prevent transmission to transfer case damage. Product information updated on 2024-12-16. This product can ship by Small Parcel