What is the purpose of a crank hub and inner shell?

The crank hub and inner shell are part of the harmonic damper assembly. They work together to help absorb and manage torsional vibrations coming from the crankshaft, which is important for engine longevity and smooth running.

What does '.005 Undersize' mean for this part?

This means the inner diameter of the crank hub is .005 inches smaller than the standard size. It is designed to fit onto a crankshaft that has been machined down to this specific undersize dimension for a precise fit.

What material is this crank hub and inner shell made from?

This crank hub and inner shell assembly is constructed from steel, chosen for its strength and durability in performance engine applications.

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Est. 1957

Specifications

Brand: ATI
Part #: ATI916890U
UPC: 800157023668

ATI Crank Hub & Inner Shell - Steel - Chevy BB .005 Undersize

Name: ATI Crank Hub & Inner Shell - Steel - Chevy BB .005 Undersize
Brand: ATI
SKU: ati-ati-crank-hub-inner-shell-steel-chevy-bb-005-undersize-t14-361076
Price: 148.36 USD
Availability: BackOrder

$148.36

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ATI steel crank hub and inner shell, .005 undersize.

Key Features

Fits Chevy Big Block engines.
Made from steel for durability.
Features a .005 inch undersize specification.
Component of the harmonic damper system.

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About this part

Product Details

ATI is known for making well-built performance engine components. This crank hub and inner shell assembly is made from steel and is .005 inch undersize, designed for Chevy big block engines. It's a key part of the harmonic damper system, helping to manage torsional vibrations from the crankshaft.

This steel assembly is built to handle the stresses of a performance engine. The .005 inch undersize specification means it's intended for crankshafts that have been machined down to match this size, ensuring a precise fit and proper function within the harmonic balancer assembly. Proper installation of this component is crucial for engine longevity and smooth operation.