HO72 / H072 Reconditioned GM Eaton Differential Carrier – 4.10 Ratio | 1949-72 Vintage

Reconditioned GM Eaton HO72 / H072 Differential Carrier – Coveted 4.10 Ratio

Product Summary

Reconditioned GM Eaton HO72 / H072 full-floating rear differential carrier with the highly sought-after 4.10 ratio (41/10 teeth). Ideal for vintage restoration projects on 1946–1972 GM 1-ton trucks (C30/K30 series). Completely disassembled, cleaned, inspected — internals in functional condition. New National 411330 input seal installed.

Key Details

• Casting Numbers: Main housing 3934635
• Input bearing/seal retainer: 3843067
• Gearset: Ring gear 3934647 (41 teeth) • Pinion 3934641 (10 teeth)
• Ratio: 4.10:1 – coveted vintage gearing for highway performance
• Axle Splines: 17-spline side gears
• Snubber Bolt: Installed
• New Seal: National 411330 input seal
• Condition: Reconditioned — inspected and functional (minor cosmetic marks, no performance impact)

What’s Included

• Reconditioned HO72 / H072 carrier with matched 4.10 gearset
• Spider gears & cross shaft (17-spline axle nest set)
• Input yoke and snubber bolt
• New National 411330 input seal

Fitment Notes

• Direct replacement for GM 1-ton trucks 1946–1972 with Eaton HO72 / H072 rear axle
• Verify casting numbers and spline count before ordering

Warranty

Sold as-is; no warranty expressed or implied.

Shipping / Location

• Ships from our Mansfield, Ohio warehouse (419-522-3320)
• Parcel or LTL options available based on packaging and weight

Ohio’s Premier Heavy-Duty Drivetrain Rebuilder — Built to Perform. Trusted to Last.