View 4 Photos View 0 Videos 2000 Mack RB688S Left Spring Hanger Recently Updated Contact for price 2000 Mack RB688S Spring Hanger / Horn For Sale. P/N 53QK5121BP, Driver side available, Used. May have some cosmetic blemishes (see photos). Give us a shout by phone, email, or text. We ship... ConditionUsedFits To Make(s)MackFits To Model(s)RB688SWill Fit Year(s)2000SideLEFTPart Number53QK5121BPStock NumberMK-0612-41 MLS Number13016152CategorySpring Hangers Last Updated4/15/2026 LocationYork, ON, Canada Sold ByLomoca Inc. (833) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info