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INTERSTATE MCBEE

INTERSTATE-MCBEE M-3818824 EXHAUST MANIFOLD NUT 89–18 5.9L/6.7L CUMMINS (AFTERMARKET REPLACEMENT)

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SKU:
MCBM-3818824
MPN:
M-3818824
Shipping:
Calculated at Checkout
$2.21
724-785-4022

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.
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Additional Information

YEAR:
1989-2018
MAKE:
DODGE
ENGINE:
5.9L,6.7L
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