Buy Cummins 4BT Engine Online

The 3.9L 4BT Inline 4-cylinder Cummins engine is one of the most often used diesel engines on diesel conversions. Like its 6BT sibling, it is extremely durable, although it is much smaller. We see a lot of Jeeps, SUVs, and even automobiles with 4BT engines installed. The 3.9L 4BT Cummins diesel engine has benefits beyond just being small, such great performance specs and a long lifespan of hundreds of thousands of miles. They are also quite simple to find!

The 4BT Cummins engine can be the best option for you if you’re seeking for the ideal Diesel engine to install in your project car. We wrote this post, the complete 3.9L 4BT Cummins Guide, to aid our users in making decisions. It covers the technical specifications, performance characteristics, and retail locations for 4BT Cummins engines. Let’s get started!

The renowned 12V Cummins engine’s pistons, connecting rods, injectors, injection pump, and valvetrain are all utilized by the 4BT engine. Cast iron is used to construct both the engine block and the cylinder head. As a result, a sturdy foundation that can tolerate significant abuse is created. The 4BT Cummins had 8 valves overall when it was first introduced in 1983, with 2 valves per cylinder. These engines had 16 valves overall and four valves per cylinder starting in 1998. One of the improvements that made it possible for the second generation 4BTA Cummins engines to produce higher performance specs is this one.

4BT Engine Reliability

The 4BT is quite reliable, much like the 6BT 12-Valve 5.9L Cummins Engine. For its size, notably, it is overbuilt. They also have a very lengthy lifespan. Because it is gear-driven, it is also essentially maintenance-free. There is no timing belt or chain because the drive systems for the camshaft, oil pump, injection pump, and accessories are all gear-driven. Electronics are also absent from early 4BT engines (pre-1998), which increases their dependability and simplicity.

4BT Engine Cummins Performance

The 4BT Engine Cummins Engine was initially intended for use in industrial, commercial, and agricultural settings. 3.9L 4BT Engine Cummins Diesel engines of the first generation generate 265 lb-ft of torque and 105 horsepower. 4BTA engines of the second generation use four valves per cylinder and deliver greater performance figures. The 4BTA Cummins Diesel engine’s most popular versions have 170 hp and 420 lb-ft of torque.

When it was introduced in the 1980s, the 4BT Engine Cummins Engine was well ahead of its time. It offers remarkable performance specifications and fuel efficiency in a small size by utilizing direct fuel injection, turbocharging, and an inline-4 architecture. The only drawback of the 4BT Engine is that, in comparison to 6BT engines, it runs somewhat rough. This is due to the 4BT’s unbalanced design, which makes it very vibration-prone.