Yukon Gear & Axle · New
Yukon Gear Standard Open Spider Gear Kit For 9in Ford w/ 31 Spline Axles and 4-Pinion Design
MPN YPKF9-S-31-4 · Store SKU yukYPKF9-S-31-4
Supplier stock checked 11/7/2026, 9:59:42 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The Yukon standard open spider gear kit is made for Ford 9", 31 Spline, 4-pinion design. (Part number YPKF9-S-31-4) Yukon Gear & Axle spider gear kits feature higher-quality materials and better manufacturing techniques than OEM to ensure a longer-lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement. Yukon Gear & Axle spider gear kits feature higher quality materials and better manufacturing techniques than OEM to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. Yukon STD open spider gear kit for 9" with 31 spline axles & 4-pinion design Yukon STD open spider gear kit for 9in. with 31 spline axles/4-pinion design
Manufacturer fitment & guides
Check YPKF9-S-31-4 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
