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Replacement Spar Hanger Bottom for Thule Expansion Accessory Backbone  

Updated 06/30/2026 | Published 06/24/2026

Question:

Can you share the link for the four bolts needed to screw into the nuts on this part?

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Expert Reply:

Hey Lucas welcome back! The Replacement Spar Hanger Bottom for Thule Expansion Accessory Backbone item # 753-3584 requires four of the Replacement Washer item # 951081654. Along with four M8 x 1.25 x 25 mm bolts, which we do not carry. They should be easy to source online. The Thule pn for them is 853-5976.

If you have any additional questions, go ahead and click on the box that says Add Comment and I'll be happy to answer them.

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Jerred H
753-3584
753-3584
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Hokie profile picture

Hokie

6/30/2026

I was able to easily find the bolt hardware at Ace Hardware. Same black coating and hex bolt style

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