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Automann · Suspension & Steering
M876
In stock · ships from Knoxville
A side bar (also called a spring pin or equalizer pin) is a hardened steel component used in the front suspension of heavy-duty trucks.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 5 applications
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All confirmed applications for this part number.
Peterbilt
Other applications
Peterbilt
Other applications
Verify axle width, spring pin center-to-center spacing (4"), and hole diameter before ordering. The aluminum version M876A is also available for weight-sensitive applications.
Part data verified against 5 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It secures the leaf spring to the spring hanger or frame, preventing lateral movement and keeping the axle properly aligned. Over time, the side bar can wear, leading to clunking noises, loose steering, or wandering—making it a common replacement part during suspension repairs. The M876 fits a wide range of Mack, Kenworth, and Peterbilt front axles; a lightweight aluminum version is available under part number M876A.
Part Number: M876
SIDE BAR MACK
Vendor: K&L Parts and Service
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside suspension & steering
