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Pro-Par · Brakes & Wheel End
WC170L
In stock · ships from Knoxville
This is a left-hand (driver's side) S-camshaft for Spicer-type air brake systems on heavy truck and trailer axles.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
For use with Spicer-type trailer brakes having 16-1/2" diameter. Always verify effective length (20-3/8"), spline count (28) and side (LH) before ordering. Part number WC170L corresponds to PROWC170L and various OEM cross references.
Part data verified against 3 catalog sources
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The S-cam converts the rotational motion from the brake chamber into linear force, spreading the brake shoes against the brake drum to slow or stop the vehicle. It is typically replaced when splines are worn, the cam lobe surface is scored or pitted, or when there is uneven brake wear or noise coming from the drum. This particular cam fits 16-1/2 inch brakes and has a 28-spline, 1-1/2 inch diameter shaft with an effective length of 20-3/8 inches.
Part Number: WC170L
S-CAM, SPICER
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
