5253499 Intake Manifold Cover Gasket Up for Cummins ISB QSB Replace No. 5264566

he Cummins intake manifold cover gasket #5253499 (replacing #5264566) is designed for Cummins ISB/QSB diesel engines, including the 5.9L and 6.7L used in Dodge Ram trucks. Here’s what you need to know:

✅ Compatibility & Applications

✔ Fits:

• Dodge Ram 5.9L Cummins (ISB) – 2003–2007 (common for turbo sealing)

• Dodge Ram 6.7L Cummins (ISB) – 2007.5–2018

• Industrial/Marine QSB5.9/QSB6.7

❌ Does NOT Fit:

• 1998.5–2002 5.9L (24V VP44 engines) – Different intake design

• 2019+ Ram 6.7L (updated intake manifold)

🔧 Key Features

• Material: High-temp rubber/fiber composite (OEM-spec sealing)

• Replaces #5264566 (older part number, same function)

• Seals intake manifold cover (prevents boost leaks)

⚠️ Common Symptoms of a Failing Gasket

• Boost pressure loss (turbo spool sluggishness)

• Oil/air leaks near intake manifold

• Whistling noise under acceleration

🛒 Where to Buy

• OEM Dealers: Cummins, Dodge Ram parts counters

• Online:

  • Amazon

  • eBay

  • Diesel specialty sites (XDP, Thoroughbred Diesel)

🔩 Installation Tips

1. Clean surfaces thoroughly (no old gasket residue).

2. Torque bolts in sequence (spec: 18–22 ft-lbs).

3. Inspect intake manifold for cracks/warping while removed.

🔄 Alternatives

• Upgraded aftermarket gaskets (e.g., Victor Reinz or Mahle for heavy-duty use).

📌 Final Verdict

✔ Direct fit for 2003–2018 Dodge Ram Cummins 5.9L/6.7L.
🔧 Critical for preventing boost leaks—replace if worn!

Need help finding a full intake manifold kit? 👉 Crevoc 3.5″ Intake Manifold for 6.7L Cummins (2007-2018)