12-Bolt C-Clip Axle Set 31-5/16 66-70 GM Impala

The 12-Bolt C-Clip Axle Set 31-5/16 66-70 GM Impala from Moser Engineering is designed specifically for classic muscle car restoration and high-performance street applications on second-generation Chevrolet Impalas. This axle set is essential for builders modernizing 1966–1970 model-year vehicles, where factory axles often fall short in strength for contemporary engine builds and aggressive driving demands.

Featuring a 12-bolt differential carrier design and C-clip axle retention, this set offers proven durability and straightforward installation compared to earlier 10-bolt assemblies. The 31-5/16-inch axle length is exact to 1966–1970 Impala specifications, ensuring proper fitment without the need for custom fabrication or shimming complications. Moser Engineering's high manufacturing standards guarantee consistent material hardness and precise bearing preload, which contribute to reduced noise and improved traction distribution.

This axle set is ideal for Impala owners pursuing restomod builds, classic street machines, or original-style restorations. The robust construction ensures extended service life under sustained load, making it a foundational component for reliable power delivery and safety when pairing modern engines with vintage platforms.