MBRP S6148AL 4 Inch Turbo Back Exhaust

MBRP S6148AL 4 Inch Turbo Back Exhaust for 1989–1993 Cummins

The MBRP S6148AL 4-inch turbo back exhaust is built for 1989–1993 Cummins 5.9L trucks looking for improved exhaust flow, better sound, and reliable performance. This system replaces the restrictive factory exhaust and allows the engine to breathe more efficiently.

If you want better throttle response and a deeper exhaust tone, this upgrade delivers both.

Turbo Back Performance

A turbo back system replaces everything from the turbo outlet to the tailpipe. Because of that, it removes factory restrictions and improves overall exhaust flow.

As a result, the engine runs more efficiently and responds better under load.

Armor Lite Construction

MBRP builds this system using heavy-gauge aluminized steel. This material provides durability while keeping cost down.

In addition, the Armor Lite series is designed for moderate climates. It offers a solid balance between performance and affordability.

Durable and Complete System

This exhaust system includes welded hangers and a 5-inch outlet tip. The components fit together properly and install securely.

Because of that, you get a clean installation and long-term reliability.

Improved Sound and Efficiency

Upgrading the exhaust changes how the truck sounds and performs. The larger diameter tubing allows exhaust gases to exit faster.

That results in:

• Improved throttle response
• Lower exhaust restriction
• A deeper, more aggressive exhaust tone

Easy Installation

This system installs using factory mounting points. You do not need to fabricate or modify parts.

However, this system fits 2WD trucks only and excludes extended cab long bed configurations.

Warranty Coverage

MBRP backs the Armor Lite series with a 3-year warranty on aluminized steel systems. This coverage protects against defects in material and workmanship.

Fitment

• 1989–1993 Dodge Ram Cummins 5.9L
• 2WD trucks only
• Excludes EC/LB configurations

Related Parts (Same Platform)

Find more Cummins upgrades here:
https://reviewdiesel.com/product-category/5-9l-cummins/

Built for Better Flow and Sound

Factory exhaust systems limit performance. The MBRP S6148AL removes those restrictions and helps your Cummins run stronger while sounding the way it should.