Yukon Gear & Axle

Quantity Decrease quantity for Yukon ZK F9-B Ford 9in LM501310 Big Bearing Kit for Nodular 3.250in Diffs Increase quantity for Yukon ZK F9-B Ford 9in LM501310 Big Bearing Kit for Nodular 3.250in Diffs

Add to cart

 

 

Product Specification:

SKU:YUKZK F9-B

MPN: ZK F9-B

UPC: 883584370352

Weight: 6.1 lb

Inventory: 2

Type: Differential Overhaul Kits

Description

Vehicle Fitment

• Ford 9" third member differentials using LM501310 carrier bearing races (3.250" O.D. "big bearing")
• Factory nodular ("N"-marked) Ford 9" center sections, generally associated with higher-performance and heavy-duty original-equipment applications from the late 1960s through the 1970s
• Widely used in aftermarket nodular 3.250" third members from builders such as Currie, Dana Spicer, and Strange, popular in Bronco, F-100/F-150, and classic Ford muscle car builds

Fitment Notes

• Fitment is determined entirely by carrier bearing race size (LM501310, 3.250" O.D.), not by vehicle year or model - measure or identify your carrier bearing before ordering, since factory Ford 9" units and many aftermarket third members mix both the 3.250" and the smaller 3.062" carrier bearing sizes
• I was not able to confirm a specific, reliable factory vehicle-by-year application list for this bearing size from independent sources, so none is presented here - if you need confirmation for a specific factory vehicle, verify directly with Yukon/USA Standard Gear or by measuring your differential's carrier bearing
• A separate kit is required for Ford 9" units with a Daytona pinion support housing versus a stock pinion support housing - confirm which your third member uses

Features

• Complete master overhaul kit for the Ford 9" differential with LM501310 (3.250" O.D.) carrier bearing races
• Includes a pilot bearing in addition to standard carrier and pinion bearings
• Includes a complete pinion shim kit for accurate gear setup
• Includes thread locking compound and marking compound for a verifiable, correctly-set install
• Bundles all major rebuild consumables into one kit
• Manufactured by USA Standard Gear
• Suited for both factory N-case rebuilds and aftermarket 3.250" nodular third member builds
• Supports gear ratio changes and locker/posi installations in addition to standard rebuilds

Specifications

• Differential: Ford 9" third member
• Carrier bearing race: LM501310 (3.250" O.D., "big bearing")
• Case type: Factory nodular ("N") or compatible aftermarket 3.250" nodular case

Included Components

• 1x Carrier bearing & race set
• 1x Pinion bearing & race set
• 1x Pilot bearing
• 1x Pinion seal
• 1x Complete pinion shim kit
• 1x Ring gear bolt set
• 1x Pinion nut
• 1x Crush sleeve
• 1x Thread locking compound
• 1x Marking compound with brush
• 1x Gasket

Product Description

The Yukon ZK F9-B is a complete master overhaul kit for the Ford 9" differential built around the larger LM501310 carrier bearing race - a 3.250" O.D. "big bearing" found in factory nodular ("N"-marked) Ford 9" center sections and widely replicated in aftermarket nodular 3.250" third members from builders like Currie and Dana Spicer. This bearing size is generally associated with the stronger, more failure-resistant nodular iron cases favored for higher-torque and higher-performance 9" builds.

Because the Ford 9" comes in multiple carrier bearing sizes across both factory and aftermarket cases, correctly identifying your bearing size - 3.250" for this kit, versus the smaller 3.062" used in other 9" applications - is essential before ordering. This kit bundles everything needed for a full rebuild into one part number: carrier and pinion bearings and races, a pilot bearing, pinion seal, complete shim kit, crush sleeve, ring gear bolts, and the thread locker, marking compound, and gasket needed for a proper reassembly.

This is a rebuild-support kit rather than a ring-and-pinion set, so it pairs with either your existing gears or a new gear set when changing ratio. It's a common choice for Bronco, F-100/F-150, and classic Ford muscle car builds using a nodular 3.250" third member. Installation involves full disassembly of the differential and proper backlash/preload setup, so it's best suited for an experienced DIY installer or a differential shop.