Product Description
Interstate-McBee M-3949530 – T3 Turbo Inlet Gasket (89–07 5.9L Cummins)
Direct-fit turbo inlet (T3 flange) gasket for Dodge Ram 2500/3500 with the 5.9L Cummins (1989–2007). Seals the joint between the exhaust manifold and turbocharger turbine inlet. Sold individually.
- Purpose-built: Designed for the common T3 turbo flange used on 5.9L Cummins applications.
- OE-style replacement: Matches Cummins reference 3949530 for reliable sealing.
- Easy service: Ideal when swapping turbos, resealing leaks, or replacing manifolds.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3949530 |
| OEM Reference | Cummins 3949530 |
| Gasket Type | T3 turbo inlet (exhaust manifold to turbo) |
| Footprint | T3 |
| Sold As | Each (1 gasket) |
| Qty Required | 1 per turbo/manifold joint |
Vehicle Fitment
Verify turbo/manifold flange style (T3 vs. T4) before ordering.
- Dodge Ram 2500/3500 5.9L Cummins (1989–2007)
- Engines: 12-valve (1989–1998) and 24-valve (1998.5–2007)
- Turbo/Manifold: Applications using a T3 inlet flange (e.g., common HX/HY/HE series)
What’s Included
- (1) T3 turbo inlet gasket, P/N M-3949530
Install Notes
- Clean both mating surfaces; remove old gasket material and carbon.
- Use new hardware as needed; torque to manufacturer specification in a criss-cross pattern.
- Do not apply sealant unless explicitly specified by the turbo/manifold manufacturer.
- After heat cycling, recheck fastener torque if recommended.
Why Buy From CPP Diesel
- Diesel-specialist support and ESN-based fitment guidance
- Fast shipping and easy returns
- Wide selection of complementary turbo & exhaust parts
FAQ
Will this fit my 5.9L Cummins?
If your turbo and manifold use a T3 inlet flange (common on 1989–2007 5.9L Cummins), this gasket is the correct style. Always verify flange type.
Do I need sealant?
No sealant is typically required; install the dry gasket on clean, flat surfaces and torque to spec.
How many do I need?
One gasket per turbo/manifold joint.
