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Post Onsite · Brakes & Wheel End
BRK4591SF
In stock · ships from Knoxville
This is a brake shoe kit for heavy-duty trailer air brake systems.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
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Other applications
Designed for 23K GAWR axles. Verify your brake dimensions (12.25 in. drum, 7.5 in. wide shoe) and closed/closed S-cam style before ordering. The shoes may fit multiple OEM axles that share the FMSI 4591SF profile.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 6 of 6.
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It replaces the shoes on one wheel of a Dexter-style 12.25-inch diameter by 7.5-inch wide S-cam drum brake, commonly used on 23,000-lb trailer axles. The kit includes two new shoes pre-lined with friction material and the mounting hardware needed for installation. You would replace it when shoes are worn down, contaminated, or cracked to restore safe stopping power.
Part Number: BRK4591SF
BRAKE SHOE KIT
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
