Product Description
MBRP S6104P is a 4-inch turbo-back, single-side exit exhaust built for 2003–2004 Dodge Ram 2500/3500 trucks with the 5.9L Cummins. It delivers lower EGTs, quicker spool, and a deep, clean exhaust note in MBRP’s Performance Series aluminized steel.
- 4" turbo-back system, single-side exit
- Aluminized steel tubing with direct-fit hangers
- Low-restriction muffler for balanced tone and flow
- Complete hardware + clamps for a straightforward install
Fitment
- 2003–2004 Dodge Ram 2500/3500, 5.9L Cummins (24-valve, 305 HP)
- Designed for the 03–04 platform; see cross-references below for stainless or 5" options in the same years.
What’s Included
- 4" turbo downpipe, intermediate pipe(s), muffler, tailpipe
- Clamps and installation hardware
- Tip where applicable for series; Performance Series typically includes a polished tip
Installation Notes
- Direct bolt-on to OEM-style hangers
- Typical garage install time: ~1.5–2 hours
Emissions & Compatibility
Intended for 2003–2004 5.9L Cummins applications. Not for use on vehicles originally equipped with a catalytic converter (e.g., certain California/emissions-equipped models). Verify local regulations before purchase/installation.
Cross-Reference / Alternatives (MBRP only)
- Stainless 4" Turbo-Back (same years): MBRP S6104409
- Aluminized 4" Turbo-Back (Installer Series): MBRP S6104AL
- Aluminized 5" Turbo-Back (same years): MBRP S61140P
- Aluminized 5" Turbo-Back (Installer Series): MBRP S61140AL
- Stainless 5" Turbo-Back (same years): MBRP S61140409
FAQs
Will this fit all 2003–2004 5.9L Cummins trucks?
It’s designed for the 2003–2004 Ram 2500/3500 5.9L platform. If your truck was emissions-equipped with a catalytic converter, choose a compliant system or see the stainless/aluminized 5" alternatives above.
What’s the difference between S6104P and S6104AL?
Both are aluminized 4" turbo-back systems for 03–04. S6104P is Performance Series; S6104AL is Installer Series. For stainless, see S6104409.
Do I need tuning after installing this exhaust?
No tune is required for fitment. Many owners pair an exhaust with monitoring/tuning for EGT control and performance, but it’s optional.
Is a tip included?
Performance Series kits typically include a polished tip. Check your kit contents before install; tips can also be added separately if desired.
What if I want stainless instead of aluminized?
Choose the 4" XP stainless S6104409 or move up to 5" stainless S61140409.
