15 0 Allison HT740 Transmission for a 2001 Mack MR688S Contact for price Good core Allison HT740 Transmission from a 2001 Mack MR688S truck. The Transmission has been visually inspected and is in good condition. Transmission has attachments, please refer to... ConditionUsedEngine ModelMack E7Fits To Make(s)MackFits To Model(s)MR688SWill Fit Year(s)2001Part Number240623-2Stock Number240623-2 MLS Number13313970CategoryTransmissions Last Updated11/15/2025 LocationKankakee, IL, US Sold ByRiver Valley Truck Parts (844) 604-___ SHOWNUMBERCall Seller Email Seller Save More Info