Product Description
Upgrade your 1st-Gen Cummins the right way. The MBRP S6150409 is a 4" turbo-back, single side-exit system built from T409 stainless for long-term durability and a clean, classic sound profile. Includes a 3.5" turbo downpipe and a polished 5" outlet tip.
Fitment
- 1988–1993 Dodge Ram D250/D350, 5.9L Cummins, 4WD only
- Turbo-back, 4.0" tubing, single side exit
- MBRP Series: Armor Plus (T409 stainless), Street Profile tip
- MBRP Part #: S6150409
Why Buy from CPP Diesel
- Real 1st-Gen expertise — we stock and support 1989–1993 Cummins parts daily
- Fast shipping and responsive support from diesel techs
- Matched accessories and alternatives below to get it right the first time
Cross-Reference & MBRP Alternatives
Prefer a different material or sound? Compare the MBRP family for the same truck:
- Aluminized Steel (4WD): MBRP S6150AL
- Installer Series (budget 4WD): MBRP S6150P
- No-Muffler (4WD): MBRP S6150PLM
- 2WD Option (’89–’93): MBRP S6148AL
What’s Included
- 3.5" turbo downpipe
- 4" T409 stainless intermediate/tail pipes
- Clamps, hangers, and hardware for bolt-on install
- Single-wall, rolled-edge tip (T304, 5" outlet)
Install Notes
- Direct bolt-on to OEM-style hangers; typical install 1.5–2.0 hours
- Check wheelbase/bed configuration for tip alignment
- Designed for 4WD models; see alternatives above for other configs
FAQ
Is this system street-drivable without drone?Yes. The Street Profile tuning provides a confident exhaust note under throttle without being obnoxious on long drives.
Does it include the turbo downpipe?
Yes — a 3.5" downpipe is included for a true turbo-back system.
What material is the system made from?
T409 stainless steel tubing (Armor Plus) with a polished T304 stainless tip.
Will it fit 2WD trucks?
No. This S6150409 kit is for 4WD. For 2WD, use the S6148AL (’89–’93).
Warranty coverage?
Armor Plus T409 stainless carries a lifetime warranty from MBRP.
