Jeep 5.9L (360 cu in) CRD firing order — diagram & guide

Back in the day, Jeep had a long list of different V6 and V8 gasoline engines, so the introduction of a 5.9-liter straight-six diesel was pretty big news. Now known as a Cummins CRD engine, this highly reliable motor was used in a lot of different Jeep models.

So, to keep it that reliable, you’ll need to know the exact Jeep 5.9L (360 cu in) firing order, and our team will gladly guide you through it.

Jeep 5.9L CRD firing order

Let’s start with the key point of this guide – the Jeep 5.9 CRD firing order is 1-5-3-6-2-4 and it’s a completely unique firing order only for this engine. The Cummins diesel is a rare straight-six diesel engine, which means the cylinders are ordered in a straight line, unlike the modern-day V6 engines.

The engine is special for a lot of things, but it’s getting a bit older by the day so you have to know the firing order to check the engine’s cylinders in the right firing pattern.

To help you out, we’ll give you a few pointers on the engine’s cylinder positioning since it’s a pretty rare layout for a diesel engine.

Jeep 5.9L CRD cylinder diagram

When it comes to the cylinder arrangement of this engine in Jeep models, things are pretty simple. A straight-six always goes from 1 to 6 in terms of the cylinder order, and the first cylinder can be found on the front end of the engine, often close to the radiator.

It’s the same with this engine, so if you want to apply the firing order properly, you can go from the first cylinder at the front, and move on through cylinders 2, 3, 4, 5, and 6 in a straight line.

Jeep 5.9L CRD vehicle applications

As an engine that most drivers refer to as the “Trackhawk before the Trackhaws”, the 5.9-liter Cummins diesel was available in a few. Jeep models. However, a lot of other vehicle models shared this engine, so let’s see the total list:

• Jeep Grand Cherokee
• Dodge RAM
• Jeep Wrangler Rubicon Cummins
• Jeep Comanche

As you can see, quite a few vehicles shared this engine and it was deemed reliable and also had quite some tunning potential.

Our take

Overall, the Cummins straight-six engine is nowadays considered one of the best diesel engines ever made, especially in the US market.

So, we are happy that our team was able to help you as the proud owner keep the machine rolling a few miles longer with this guide on the Jeep 5.9L CRD firing order.