Genuine DCEC 4B 4BT 4BTA 6B 6BT 6BTA Cummins Thermostat 4930315
New suitable replacement 181° Thermostat Fits Cummins 4B, 4BT, 4BTA, 6B, 6BT, 6BTA 4 & 6 Cyl DIESEL 3917324, 3802968, 3917324, 3902465, 3906700, 3910706, 3912587, 3917324, 3972071, 5292738, 3923331, 3920020, 3903301
We provide a high quality and competitive price Water Pump for a full range of Cummins diesel engines, including cooling system components, aftercoolers, fresh and raw water pumps, and thermostats. Sea Water Pump engine parts are possible for the 4BT3.9/6BT5.9/6CT8.3/6LT8.9/NT855/KT19/KT38 series Cummins engine.
What temp should a 5.9 Cummins run at?
190 Degrees Fahrenheit (1999-2009 2013 Cummins) 200 Degrees Fahrenheit (2010-2012 Cummins)
How hot is too hot for a diesel engine?
You can run up to 220°F all day long without any problems
Choosing the 160F or 180F Thermostat for your Cummins 6BTA
Choosing the correct thermostat for your Cummins Marine 6BTA can sometimes be a tricky process… And although the Cummins factory has been supplying all B5.9 Marine engines with 180F stats since their introduction in 1985, IMO, as the 5.9 increased its POWER DENSITY from a 210 HP (roughly 35 HP per piston) engine to a 355HP engine (i.e. the “370 Diamond” at 60 HP per piston), IMO the engineers went to sleep as to what could and was happening in the field with these engines.
Although these same engineers did upgrade many parts of the cooling system over these 2 decades, I do not think they realized exactly what can happen in real life conditions in a Marine Environment, especially on planing boats.I think they only thought about a Motor Home or Dodge ¾ ton truck with a horse trailer on the back cruising down the freeway at 60-70 MPH with the 5.9 under the hood… all while using under 4-6 GPH for hours on end (maybe 15HP per piston hauling that Horse trailer).
The problem is, in any planing hull I have seen these engines in, it goes like this…….It’s typically 8-13 GPH per engine when on plane in every single engine or twin engine boat that I have ever sea trialed, with 10-ish GPH seen as an average in the usual vessels that these engines are installed in. And In case you don’t already know, the GPH your engine is consuming is a 100% direct relationship to the power you are extracting from the engine.This is a very simple grade school equation—–More HP = More HEAT, and that is truly, “plain and simple”—– Making sense yet as to where this is going?