The Cummins NTC855 exhaust manifold, OEM part number 3801915, is engineered for heavy-duty diesel engines produced between 1986 and 1994. This component plays a central role in managing exhaust flow from the engine cylinders to the turbocharger and out through the exhaust system.
Made of high-grade cast iron, the manifold is designed to withstand the high temperatures and stresses generated during continuous engine operation in demanding environments.
Core Features and Elements of the OEM 3801915 Exhaust Manifold:
- Multi-Port Design
- Collects exhaust gases from multiple cylinders.
- Turbo Mounting Flange
- Connects directly to the turbocharger inlet.
- Expansion Joints (in segmented designs)
- Help reduce thermal cracking from heat cycles.
- Sealing Surfaces
- Ensure tight connections to the cylinder head and turbo.
- Mounting Bolt Holes
- Precisely aligned for secure fitment to the engine block.
This manifold is tailored to the Cummins NTC855’s architecture, supporting proper exhaust routing and temperature control. Using the OEM 3801915 ensures exact fit, long-term durability, and compatibility with engine-mounted components. For best results, pair it with quality gaskets and follow torque specs during installation to prevent leaks or stress fractures.
