BLKPRO Access Hole Cover For Cummins 5.9L 6BT, 4B, B3.9, ISB, QSB, QSC – OEM 3903463, Fits Dodge, Freightliner, Ford, And More

Need a solid replacement access hole cover for your Cummins engine?

This BLKPRO unit is brand new, direct-fit, and matches OEM part number 3903463.

Works with a ton of applications: 5.9L 6BT, 4B, B3.9, ISB, QSB, QSC—plus trucks, tractors, gensets, marine engines, and more.

Compatible with Dodge, RAM, Ford, Freightliner, Peterbilt, JCB, and others.

Whether it’s a skid steer, bus, or big rig, this cover gets the job done.

Built tough by BLK Diesel.