CUMMINS 5266419 OEM TURBO TO EXHAUST MANIFOLD GASKET – ISB 6.7L (2013–2018)

Product Description

CUMMINS 5266419 OEM TURBO TO EXHAUST MANIFOLD GASKET – ISB 6.7L (2013–2018)

CUMMINS 5266419 turbo to exhaust manifold gasket, genuine Cummins turbocharger gasket, 2013 2014 2015 2016 2017 2018 Ram 2500 3500 4500 5500 6.7L ISB, EPA13 ISB QSB 6.7 turbo gasket, OEM Cummins 5266419 gasket, 0619567218768, HE300VG turbo gasket, turbo to manifold T4i gasket, CPP Diesel Cummins genuine parts

Keep your 2013–2018 Ram 6.7L Cummins sealed tight at the turbo-to-exhaust manifold joint with the genuine CUMMINS 5266419 OEM turbocharger gasket. This T4i flange gasket is the factory part used on EPA13 ISB/QSB 6.7L platforms and is designed to survive extreme heat cycles, boost pressure, and vibration without leaking. If the turbocharger is removed for any reason—stock replacement, performance upgrade, or manifold service—this non-reusable gasket must be replaced to maintain OEM reliability and performance.

This is the same Cummins turbo-to-manifold gasket used in dealer service, so you get the exact fit, material, and clamp load retention your HE300VG-equipped 6.7L was engineered for. Pair it with fresh turbo mounting studs and a proper oil drain setup and you’ll head back on the road with a clean, leak-free exhaust connection and no soot streaks on the firewall.

Fitment – CUMMINS 5266419 Turbo To Exhaust Manifold Gasket

• Engine: Cummins ISB 6.7L / QSB 6.7L (EPA13 platforms)
• Primary automotive fitment: 2013–2018 Ram 2500 / 3500 / 4500 / 5500 with 6.7L Cummins (HE300VG variable-geometry turbocharger)
• Location: Turbocharger to exhaust manifold flange (T4i turbo flange)
• Quantity required: 1 gasket per turbocharger (replace any time the turbo is removed)
• Typical uses: Stock turbo replacement, manifold swap, turbo upgrade using OE-style T4i mounting

Why Choose Genuine Cummins 5266419?

• OE-engineered sealing for the turbo-to-manifold joint on EPA13 6.7L ISB/QSB engines
• Correct T4i flange profile for factory HE300VG turbochargers
• Heat- and pressure-resistant construction to survive repeated high-load towing and tuning
• Non-reusable by design – crush-style gasket maintains clamp load and sealing integrity
• Backed by Cummins’ engineering and quality control instead of generic aftermarket materials

Cross-Reference & Related Cummins Genuine Parts (CPP Diesel)

Round out a proper turbo service using only genuine Cummins components from CPP Diesel. These related parts are commonly serviced at the same time as 5266419:

• CUMMINS 4931642 OEM TURBOCHARGER MOUNTING STUD (DOUBLE END PLAIN) – RAM 6.7L (2007.5–2018) – OE turbo mounting stud (4 required) to properly clamp the 5266419 gasket.
• CUMMINS 3934084 OEM FLEXIBLE TURBO OIL DRAIN TUBE – RAM 5.9L/6.7L (21" LENGTH) – Genuine flexible drain tube that routes oil from the turbo back to the crankcase.
• CUMMINS 5264566 OEM INTAKE AIR HEATER GASKET (INTAKE PLENUM / CONNECTION) – ISB 6.7L (2007.5–2018) – Grid heater / intake gasket often disturbed when doing turbo/manifold upgrades.
• CUMMINS 3949530 OEM T3 TURBOCHARGER TO EXHAUST MANIFOLD GASKET – RAM 5.9L (2003–2007) – OE T3 turbo-to-manifold gasket for earlier 5.9L common-rail trucks (use if servicing a pre-2013 5.9L instead).

What’s In The Box

• (1) Genuine Cummins 5266419 Turbocharger To Exhaust Manifold Gasket

Installation Notes

• Clean both mating surfaces completely – remove all old gasket material, carbon, and rust.
• Inspect the manifold and turbo flange for pitting or warpage; correct as required before installation.
• Install the gasket dry unless the Cummins service procedure specifically calls for sealant.
• Use new turbo mounting studs and nuts where required and torque to the factory spec in a crisscross pattern.
• After initial heat cycle, re-check hardware torque if recommended by the service manual.

Specifications for cummins 5266419

FAQ – CUMMINS 5266419 Turbo To Manifold Gasket

WILL THIS FIT MY 2013–2018 6.7L CUMMINS RAM?

Yes. CUMMINS 5266419 is the OE turbo-to-exhaust manifold gasket for most 2013–2018 Ram 2500/3500/4500/5500 trucks equipped with the 6.7L ISB and HE300VG turbocharger. Always verify by VIN or engine serial number (ESN) if your truck has been modified or uses non-stock components.

IS THIS GASKET REUSABLE?

No. This is a crush-style, non-reusable gasket. Once compressed by the turbo mounting hardware, it should be replaced any time the turbo is removed from the manifold to ensure a proper seal and avoid exhaust leaks or soot streaking.

WHAT OTHER PARTS SHOULD I REPLACE WITH THIS GASKET?

For a complete, leak-free repair, CPP Diesel recommends new Cummins 4931642 turbo mounting studs, fresh turbo mounting nuts, and inspection of the Cummins 3934084 flexible turbo oil drain tube and related gaskets. This prevents future leaks and ensures proper turbo alignment and oil return.

DOES THIS GASKET WORK ON OTHER 6.7L ISB/QSB APPLICATIONS?

Yes. 5266419 is used widely on EPA13 6.7L ISB/QSB automotive and industrial platforms. For non-Ram, off-highway, or equipment applications, always confirm by ESN and the turbo/manifold flange callout in your Cummins parts catalog.

CAN I USE THIS WITH AN AFTERMARKET TURBO?

If your aftermarket turbocharger uses an OE-style T4i exhaust manifold flange and is designed as a stock-replacement (HE300VG-style) unit, 5266419 is often the correct gasket. Always verify flange style and fastener pattern before ordering, or contact CPP Diesel with your turbo part number for assistance.

WHAT HAPPENS IF I REUSE THE OLD GASKET?

Reusing a crushed gasket can lead to exhaust leaks, noisy operation, loss of boost energy, and soot buildup on nearby components. In extreme cases, leakage at the turbo flange can negatively impact turbo performance. For the cost of a new OE gasket, it is always best practice to replace it rather than risk a leak.