Callies Magnum Crankshaft - SB Chevy - 4.000" Stroke - 2.100" Pin - 350 Main 2.448" M59MC Retains factory-style spring cup

Retains factory-style spring cup

The filter media is constructed of 7-layers

Universal application

2015-2019 GMC Sierra 2500 HD 97

Callies Magnum Crankshaft - SB Chevy - 4.000" Stroke - 2.100" Pin - 350 Main 2.448" M59MC Retains factory-style spring cupA combined effort by Callies CNC programming and engineering staffs has resulted in a component that is distinctive and highly functional. Unique counterweight and rod arm contours produce a lightweight, aero efficient crankshaft. Callies Series II Mangnum Mass Correct counterweights have been placed specifically to reduce bearing loads. By concentrating mass at the point of imbalance, the transfer of rotating and reciprocating assembly weight loads