8 0 Paccar MX-13 Idler Gear for a 2013 Peterbilt 386 $75 USD Good, Used Idler Timing Gear off a Paccar MX13 engine. in great working condition after being carefully looked over it has all its teeth. Casting number is 1837778, Serial number is A113830,... ConditionUsedFits To Make(s)PeterbiltFits To Model(s)386Will Fit Year(s)2013Part Number200163-87Stock Number200163-87 MLS Number10806079CategoryIdler Gears Last Updated12/18/2023 LocationKankakee, IL, US Sold ByRiver Valley Truck Parts (844) 604-___ SHOWNUMBERCall Seller Email Seller Save More Info