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(888) 312-8812 Login SignupDoes the replacement cushion need original-equipment foam density to resist bottoming out during long stretches behind the wheel? The Mack Seat Cushion Assembly uses that matched foam density inside a cover cut to the factory seat frame, helping the cushion retain its intended support. The Mack 84901002 bolts to the same seat-frame mounting points as the cushion it replaces. Keeping the foam density and mounting pattern aligned with the original setup preserves the seat's familiar fit and support.
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