ARP Main Stud Kit - Hex Nuts - 4-Bolt Mains - Chromoly - Black Oxide - Dart Big M - Splayed Cap Bolts - Big Block Chevy 20-PRY-NB-6XS Axles have 31 / 24

Axles have 31 / 24 splines

straightened and feature large fillit radii on all journals for increased lubrication

These caps are injection molded from DuPont Rynite material and feature spark plug-style terminals

Aluminum anodized nuts have 3/8"-16 threads and captured washers

500 CFM reversible Tornado electric fan

ARP Main Stud Kit - Hex Nuts - 4-Bolt Mains - Chromoly - Black Oxide - Dart Big M - Splayed Cap Bolts - Big Block Chevy 20-PRY-NB-6XS Axles have 31 / 24Product Description: Main Stud Kit Hex Nuts 4 Bolt Mains Chromoly Black Oxide Dart Big M Splayed Cap Bolts Big Block Chevy Since 1968, ARP is the fastener of champions and the world leader in fastener technology.