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B&B Performance Head Bolt Step Washers

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B&B Performance's unique step washers for aluminum heads are fully machined from 4130 chromoly steel and heat-treated to the proper hardness. They are permanently pressed into the top of the bolt hole, which completely eliminates the problem of the aluminum collapsing into the bolt hole.

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B&B Performance Head Bolt Step Washers 30440

Head Bolt Step Washers, 4130 Chromly, Natural, 0.685 in. I.D., 0.995 in. O.D., Set of 20

Part Number: STF-30440

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

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