Callies APU-31V-AS Apex Series LS Forged Crankshaft, 4.125-Inch Stroke

The Callies Apex Series APU-31V-AS crankshaft is designed for GM LS-Series applications requiring a 4.125-inch stroke. It features a forged steel construction and internal balance for a performance-focused rotating assembly.

This crankshaft uses a 58X reluctor and a 1-piece seal configuration. The Apex Series design combines these application-specific features in a crankshaft supplied individually for compatible GM LS-Series engine builds.

Verify engine requirements and application details before installation to confirm the crankshaft’s stroke, balance configuration, reluctor pattern, seal arrangement and GM LS-Series compatibility meet your build specifications.

Features:

• Brand: Callies
• Part Number: APU-31V-AS
• Series: Apex Series
• Application: GM LS-Series
• Stroke: 4.125 inches
• Construction: Forged steel
• Balance: Internal balance
• Reluctor: 58X
• Seal Configuration: 1-piece seal
• Quantity: Each