NEWSTAR part description

Features & Benefits

  • Made of premium-quality steel that's been heat treated for additional strength
  • All components meet or exceed original equipment specifications for a seamless fit and compatibility
  • Gear teeth are precision machined and tested to ensure they meet strict quality standards
  • Assembled in ISO-certified facilities and in compliance with international safety and environmental standards

Newstar Differential Side Gear

The Newstar main drive gear offers performance and durability that matches the standards of original equipment manufacturers. It is suitable for a wide range of heavy duty vehicle applications.

Product Attributes

Pinion Shaft Diameter 2.35" IN
Pinion Spline Count 46
Based in Schaumburg, IL, NEWSTAR® is an aftermarket parts manufacturer specializing in trailer suspension, engine, and drivetrain parts and components for medium and heavy duty trucks. The company supplies OEM manufacturers, truck dealerships, and warehouse distributors across the U.S. and Canada. NEWSTAR products are made of high-grade stamped steel, natural rubber, and other materials and hand-welded, resulting in an unprecedented level of quality down to the smallest detail. All products are also built and assembled using cutting-edge tools and undergo intense performance testing in an in-house quality control laboratory to ensure compliance with industry standards. 

NEWSTAR S-4256 Cross Reference

We have 2 alternatives for the S-4256 by NEWSTAR:

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