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Automann · Suspension & Steering
M4984
In stock · ships from Knoxville
This is a spring pin (also called a shackle pin) for the front leaf spring suspension on many Mack heavy-duty truck models.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
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Fits front-of-front spring positions. Verify pin diameter (1.25") and length (6.25") before installation.
Part data verified against 2 catalog sources
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It secures the leaf spring eye to the frame bracket or shackle, allowing the spring to pivot as the suspension moves. When the pin and its bushing wear, you may hear clunking or feel looseness, leading to uneven tire wear and poor steering control. Replacement is recommended whenever there is noticeable play or during a spring bushing overhaul.
Part Number: M4984
SPRING PIN MACK
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside suspension & steering
