Product Description
Interstate-McBee M-3818824 Exhaust Manifold / Turbo Mounting Nut – 89–18 5.9L & 6.7L Cummins
Premium aftermarket M10 × 1.5 exhaust manifold/turbo mounting nut engineered to OEM dimensions for 1989–2018 Cummins 5.9L & 6.7L B-Series/ISB applications. Designed for reliable clamping force, heat resistance, and long service life on stock or performance turbo/manifold setups.
- OEM-equivalent fit: Direct replacement for Cummins 3818824.
- Correct thread: M10 × 1.5 for turbo-to-exhaust manifold studs.
- Durable hardware: Heat-resistant construction for turbo/manifold duty cycles.
- Sold individually: Four (4) nuts required for a standard turbo-to-manifold connection.
- Aftermarket value: Interstate-McBee quality at a better price than OEM boxed hardware.
Specifications
| Interstate-McBee P/N | M-3818824 |
|---|---|
| OEM Cross-Reference | Cummins 3818824 |
| Thread Size / Pitch | M10 × 1.5 |
| Application | Turbocharger to exhaust manifold mounting |
| Qty Required | 4 per turbo/manifold interface (sold individually) |
| Compatible Studs | 3818823 (≈1994–2007), 4931642 (≈2007.5–2018) |
What’s Included
- (1) Exhaust manifold / turbo mounting nut (M10 × 1.5)
Vehicle Fitment
Always verify by engine serial number (ESN) and stud part number when possible.
- Dodge/Ram 2500 & 3500 – 5.9L Cummins
- 1989–1993 12-Valve (verify stud style on early trucks)
- 1994–2002 12V/24V (ISB)
- 2003–2007 24V (ISB, common-rail)
- Ram 2500 & 3500 – 6.7L Cummins
- 2007.5–2018 6.7L ISB
Installation Tips
- Inspect turbo and manifold studs; replace any stretched or corroded hardware.
- Follow Cummins service manual torque specs and tightening sequence.
- Apply high-temp anti-seize only if specified by your service procedure.
- Heat-cycle and re-check clamp load if recommended by the turbo/manifold manufacturer.
Warranty
Interstate-McBee new hardware is covered by manufacturer warranty. Contact us for current terms and eligibility.
Cross-Reference & Notes
Direct cross to Cummins 3818824. Commonly paired with studs 3818823 (’94–’07) and 4931642 (’07.5–’18). Quantity needed per turbo/manifold junction: 4.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel specialists
- Fast shipping and easy returns
- Curated Cummins hardware for reliable service work
FAQ
How many M-3818824 nuts do I need?Four are typically required to secure the turbo to the exhaust manifold (sold individually).
What is the thread size?
M10 × 1.5.
Will this fit both 5.9L and 6.7L Cummins?
Yes—commonly used on 5.9L (1994–2007) and 6.7L (2007.5–2018) with OEM-style studs; verify early 1989–1993 applications by stud type.
Which stud part numbers match?
Typically 3818823 for 1994–2007 and 4931642 for 2007.5–2018 applications.
Can I reuse old turbo/manifold nuts?
Re-use isn’t recommended. Replace hardware whenever removed to maintain clamp load and prevent loosening.
Product Videos
Custom Field
YEAR 1989-2018
MAKE DODGE
ENGINE 5.9L,6.7L
