2 0 Mack 675 Flywheel Housing $650 USD 675, Used, P/N 634GC5226, Core Charge: 0.00 ConditionUsedPart Number634GC5226Stock Number165497 MLS Number11661016CategoryFlywheel Housings Last Updated10/1/2025 LocationLouisville, KY, US Sold ByRiver City Truck Parts (855) 465-___ SHOWNUMBERCall Seller Email Seller Save More Info