U-Weld Cummins B Series Lower Water Inlet Without Return Fitting – Flange only


Our U-Weld Cummins B Series Lower Water Inlet flange is now available for your DIY needs.  Included with this purchase is one inlet flange, according to your specification in the notes of either a 1.75″ or 2″ hole.

Looking for something else?  You might try:

Are you purchasing our high mount kit?   A water inlet is automatically included with the kit and does not need to be purchased separately.

In stock (can be backordered)


This product is part of our U-Weld line of our Cummins B Series lower water inlet.  When you purchase this U-Weld product, you will receive the flange only.

Flanges are available with two sizes of holes.  Be sure to specify in the notes section of your purchase which size you need:

  • 1.75″ or
  • 2″

Made from laser cut 3/8″ Steel, our custom-fabricated inlet flange  can be directly mounted to your 6BT or 4BT block with the OEM sealing O-Ring or installed with our die-cut gasket.

In addition, this Cummins B-Series lower water inlet flange can be used along with the OEM Cummins Mid/High mount accessory mount (part numbers 3930822 or 3930888).  

Our inlet flange is compatible with any of the B-Series Cummins engines, including the 6BT and 4BT.

Looking for something else?  You might try:





Additional information

Weight 1 lbs
Dimensions 5 × 5 × 5 in
Hose Size

2.25 inch, 2 inch, 1.75 inch, 1.5 inch