Cummins 4BT 6BT Water Inlet Elbow & Seal – 3934877 Replacement

Working on a Cummins 4BT or 6BT B-Series engine?

Here's a brand new water inlet elbow and sealing ring combo you might need.

This is the connection piece that brings coolant into the engine, and it's a common replacement part for these tough diesels.

The main part number is 3934877, and it also replaces a bunch of other numbers like 3934876, 3906697, and others listed.

It's a direct-fit part, so it should bolt right up with no fuss.

It's unbranded, but it's built to OEM specs and comes with a warranty.

If your old elbow is corroded or leaking, swapping this out is a smart move to keep your engine running cool.

Don't let a small leak turn into a big problem.

Grab this inlet elbow and get your Cummins project buttoned up and back to work.

All the important interchange numbers are covered, so you can order with confidence.