Product Description
Genuine Cummins
Cummins 3949530 — T3 Turbocharger to Exhaust Manifold Gasket (Turbo Flange)
MPN: 3949530 | Also Known As: turbo flange gasket, turbo-to-manifold gasket, turbo mounting gasket | Flange: T3 (undivided)
Why This Part
- ✓ OE sealing surface between the turbocharger and exhaust manifold to prevent leaks.
- ✓ Direct-fit for Ram 5.9L ISB (2003–2007) T3 turbo mounting.
- ✓ Heat & pressure resistant construction for durability on boosted applications.
- ✓ Budget-friendly refresh any time the turbo is removed.
OE Fit T3 Flange 1 Per Turbo
Quick Specs
| Type | Turbocharger mounting gasket (turbo-to-manifold) |
|---|---|
| OE Part # | 3949530 |
| Flange | T3 undivided (factory 5.9L CR turbo flange) |
| Qty Required | 1 per turbo (sold individually) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2003–2007 | Ram 5.9L ISB (24V Common-Rail) — T3 turbo flange | Ram 2500/3500 |
Industrial/Off-Highway: Also used on select ISB/QSB Tier 3 applications; always confirm by ESN.
Often Paired With
- Turbo mounting hardware: studs 3818823 · nuts 3818824
- Exhaust manifold gaskets/sets (when removing the manifold)
- Anti-seize & fresh hardware if corroded
What’s In The Box
- (1) Genuine Cummins Turbo-to-Manifold Gasket (3949530)
Install Tips
- Clean both mating surfaces; remove old gasket material completely.
- Use new hardware if threads are stretched or corroded; apply anti-seize on studs.
- Torque turbo mounting nuts per spec and recheck after a few heat cycles.
FAQ
WILL THIS FIT MY 2003–2007 5.9L CUMMINS RAM?Yes—3949530 is the OE T3 turbo-to-manifold gasket for most 2003–2007 5.9L ISB common-rail Rams (verify by VIN/ESN).
IS THIS THE T3 FLANGE GASKET?Correct—this is the T3 undivided turbo flange gasket used at the turbo-to-manifold joint.
WILL THIS WORK ON 6.7L TRUCKS?Many 6.7L applications use different gaskets; a common 6.7L turbo-to-manifold gasket is Cummins 5260648. Always confirm by VIN/ESN.
HOW MANY DO I NEED?One per turbocharger. Replace any time the turbo is removed for service.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3949530 for proper fit and reliable sealing.
Product Videos
Custom Field
Vehicle Year 1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007
Vehicle Make DODGE
ENGINE 5.9L
Part Type Turbo to Manifold T3 Undivided Gasket
