Learning your 6BT/6BTA

Lots of questions come up on what oil filter I should be using on the Cummins B or QSB 5.9. Below is what I can share based on using and working with this engine since 1985. Every 4B & 6B … Read More

Mr. “6BTA 5.9” Cummins owner. Welcome to the world of “couch engineering”. The team of engineers who designed the mounting arrangement for this pump on the later Cummins 6BTA engines, cramped behind the engine mounting bracket, IMO, need to be … Read More

The following images depict the possible boost fitting locations & ports to obtain boost pressure readings from the engine’s intake manifold. Many of the ports can be tapped directly or also can be “tee’d” into if necessary. Typically air brake … Read More

330-370 Diamond Trans Cooler upgrade “Plug & Play” replacement for both the early ( 1.5″ water barbs ) or late 330/370 Diamonds ( 1.75″ water barbs)