A40306-1-683 Gearset | Meritor Rockwell AxleTech SSHD 41-6 | Genuine OEM

A40306-1-683 Gearset | Rockwell SSHD-R 6.83 | 41/6 Ratio | New Genuine

A40306-1-683 is a New Genuine OEM Meritor / Rockwell ring & pinion gearset engineered for SSHD-F forward rear axle models. Delivering a 6.83 ratio (41/6 tooth count), this set is built for severe-duty drivetrain performance and reliable OEM fit.

Specs & Features

• Part Number: A40306-1-683 (Alt: A40306)
• Brand: Rockwell (OEM)
• Condition: New Genuine
• Application: SSHD-R forward rear axle
• Gear Ratio: 6.83
• Tooth Count: 41 ring / 6 pinion
• Spline Size: 2.620" — 26 spline
• Type: Ring & Pinion Set

What’s Included

• 1 × Ring Gear — 40306
• 1 × Pinion — 41059
• Note: Hardware and pinion nut not included

Fitment Notes

• Designed for SSHD-F forward rear (6.83) applications.
• Verify axle model, ratio, and spline spec (2.620"–26) against your axle tag/BOM before purchase.

Image Disclaimer

Photos may show the actual item or a representative equivalent. Minor cosmetic marks from storage/handling may be present.

Warranty Policy

Sold as a new genuine OEM part; no additional warranty offered. Professional installation recommended.

Location

Mansfield, Ohio — 419-522-3320

Heavy-Duty Solutions | Built to Perform. Trusted to Last.