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Third Member Rebuild Kit | 28 / 31 spline | 1966-86 Ford Bronco SKU: 867000
Third Member Rebuild Kit | 28 / 31 spline | 1966-86 Ford Bronco
OEM-Style Overhaul Parts
Product Overview:
Give your classic Ford Bronco drivetrain the overhaul it deserves with this Master Ford 9-inch Third Member Rebuild Kit, built for 1966–86 Ford Broncos using stock or aftermarket differentials. With premium bearings and races, this complete master kit includes everything from differential and pinion bearings to crush sleeves, gaskets, gear marking compound, and ring gear bolts. It’s a full-featured solution for restoring the strength and performance of your factory Ford 9-inch rear axle.
Full description
Give your classic Ford Bronco drivetrain the overhaul it deserves with this Master Ford 9-inch Third Member Rebuild Kit, built for 1966–86 Ford Broncos using stock or aftermarket differentials. With premium bearings and races, this complete master kit includes everything from differential and pinion bearings to crush sleeves, gaskets, gear marking compound, and ring gear bolts. It’s a full-featured solution for restoring the strength and performance of your factory Ford 9-inch rear axle.
Ford 9-inch Third Member Rebuild Kit | 1966-86 Ford Bronco
Restore your original Ford 9-inch rear axle the right way with this master rebuild kit for 1966-86 Ford Broncos. This kit includes the key components needed for a proper third member overhaul, making it a more complete option than lighter install kits that leave out critical parts.
Pro Tip: Make sure to select the correct overhaul kit for your specific third member application before ordering. Bearing size, spline count, and differential type can vary by year and setup.
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Fits 1966–86 Ford Broncos: Designed for use with 28-spline or 31-spline third members.
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Complete Master Kit: Contains pinion and differential bearings, races, crush sleeve, gasket, shims, and more.
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Not Just an Install Kit: Includes vital components such as differential bearings often left out of basic kits.
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Premium Build Quality: High-grade materials ensure durability and reliable long-term performance.
Third Member Overhaul Kit Selection
It is imperative to order the correct rebuild kit for your specific application. Select from the drop-down menu when ordering to choose the right overhaul kit for your build. Below is a detailed chart explaining the differences in the various options.
| Application | Bearing ID | Race OD | Notes |
|---|---|---|---|
| 1966-69 Ford Bronco 28-spline | LM501349 1.625" |
LM501310 2.891" |
Fits for stock differentials only, not aftermarket. |
| 1970-77 Ford Bronco 28-spline | LM102949 1.780" |
LM102910 2.891" |
Fits stock or aftermarket differentials. |
| 1966-77 Ford Bronco 31-spline | LM102949 1.780" |
LM102910 2.891" |
31-spline axles are an aftermarket upgrade in Early Broncos. |
| 1978-86 Ford Bronco 31-spline | LM102949 1.780" |
LM102910 2.891" |
Fits stock or aftermarket differentials. |
Restore the Ford 9-inch third member in your 1966–86 Ford Bronco with this master overhaul kit - includes all the essentials for a proper third member rebuild.
Replaces parts 8670 and 8673
Instruction 1
California residents: Proposition 65 Warning
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