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Cummins · Exhaust
3684359
In stock · ships from Knoxville
This is a genuine Cummins exhaust outlet connection gasket, designed for 15‑liter ISX and QSX diesel engines (EPA13 emissions).
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Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
Commonly used in on‑highway trucks with the ISX15 or QSX15 engine, particularly 2013 and later models. Some listings mention XPI fuel system, but the gasket is for the exhaust outlet connection.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 5 of 5.
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It creates a leak‑free seal at the exhaust outlet connection, typically between the exhaust manifold or turbocharger outlet and the exhaust pipe. Replace it when you notice exhaust soot, hear hissing, or during any exhaust system repair to maintain emission compliance and engine performance.
Part Number: 3684359
GASKET EXH OUT CONN
Vendor: MHC Kenworth
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside exhaust
