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Chrome large tractor/trailer air brake valve screw-on knob

SKU 13631
These replacement tractor/trailer brake knobs are fully customizable to fit your taste. Sold SINGLE. Install knobs before placing sticker or plate! Test knobs to ensure they can be released properly and make all adjustments before placing sticker or plate.

Measures 1-3/4" tall (including approximately 1-1/4" from beginning of shaft curve to bottom) by 1-15/16" diameter. Shaft inner diameter approximately 11/16".

Fits most trucks - Peterbilt, Freightliner, Kenworth, International, Western Star, and Volvo. Will not fit trucks with pin-type brake knobs.