R172D557 | Dana Spicer Eaton Differential S23-172D-R5.57 | New Take-Out | 10049265

R172D557 Eaton Dana Differential | S23-172D | 5.57 Ratio | 10049265 | New Take-Out

Product Summary:
R172D557 is a Dana Spicer S23-172D differential assembly, featuring a 5.57 ratio and designed for use in heavy-duty drive axle applications. This is a new take-out unit, delivered from the OEM to the dealer with delivery miles only. The differential was professionally disassembled, inspected, and reassembled in our rebuild shop for quality assurance. Built with genuine Dana components, it offers reliable performance and durability for commercial applications.

Specs & Features:
• Dana / Eaton Part Number: R172D557
• Model: S23-172D Differential Head Assembly
• Ratio: 5.57
• Ring Gear: 10038236 – 17.476" Diameter
• Pinion Gear: 10038237
• Gear Set Number: 504424
• Tooth Count: 39 Ring / 7 Pinion
• Axle Gears: 10020053 – 46 Spline
• Drive Axle Assembly #: 7169441
• Customer Part Number: 3781106C91 (Navistar International)
• Alternate Part Numbers:
 – R172D557CF (Core Free)
 – R172D557EX (Exchange)
 – DSS172D557EX (Navistar)
• Condition: New Take-Out – inspected & reassembled in-house

What's Included:
• (1) Dana Spicer S23-172D Differential Assembly – R172D557

Fitment Notes:
• Compatible with axle configurations requiring 5.57 ratio
• New take-out unit from dealer inventory – no road use beyond delivery
• Verified, disassembled, and quality checked in our rebuild shop

Image Disclaimer:
Photos show actual product or representative example. May show minor handling marks due to storage or inspection.

Warranty Policy:
This differential is sold as-is with no warranty expressed or implied.

Location:
Ships from our warehouse in Ohio.
Heavy-Duty Solutions — Built to Perform. Trusted to Last.