5 0 Cummins 6CT 8.3 Valve Cover $350 USD Good used valve cover from a Cummins 8.3l engine. Casting number is 3907734, 3903791, 3927907, 3930903. Please see photos . Call or Email for any Question., Serial#: 3907734, 3903791,... ConditionUsedPart NumberP-3449Stock NumberP-3449 MLS Number9633724CategoryValve Covers Last Updated3/13/2025 LocationKankakee, IL, US Sold ByRiver Valley Truck Parts (844) 604-___ SHOWNUMBERCall Seller Email Seller Save More Info