Cummins N14 Engine Parts – Exhaust System Components

The exhaust system is a critical component of the Cummins N14 engine, designed to manage exhaust gases, reduce backpressure, and maintain efficiency under heavy-duty operating conditions. A properly functioning exhaust system helps regulate engine temperature, protects nearby components from heat damage, and ensures compliance with industrial and marine performance standards.

At Diesel Pro Power, we provide a comprehensive catalog of Cummins N14 exhaust components, all tested for durability and trusted by more than 40,000 satisfied customers worldwide.

Exhaust Manifold Components for Cummins N14

Exhaust Manifold Gaskets

The exhaust manifold gasket ensures a leak-free seal between the cylinder head and the manifold. On the Cummins N14, six gaskets are required per engine. These gaskets are designed to withstand extreme heat cycles, prevent exhaust leaks, and maintain proper exhaust flow.

Because the N14 engine shares design lineage with the Cummins NH855 and NT855, these gaskets are cross-compatible with multiple Cummins platforms, making them a versatile solution for rebuilds and overhauls.

Key Benefits:

• Heat-resistant sealing surface

• Prevents loss of power caused by exhaust leaks

• Helps maintain correct turbocharger pressure levels

• OEM-level reliability for long-term operation

Exhaust Insulation and Heat Protection

Manifold Insulation Tape – 3" and 4" Options

High-performance diesel engines like the Cummins N14 generate significant heat in the exhaust system. To manage thermal load and protect surrounding components, manifold insulation tape is used to wrap around exhaust manifolds, turbocharger outlets, and piping.

Available in both 3-inch and 4-inch widths, these insulation wraps are made from durable heat-resistant material designed to:

• Lower surface temperatures of the exhaust system

• Protect operators and maintenance crews from accidental burns

• Prevent heat damage to wiring, hoses, and nearby components

• Improve turbo efficiency by retaining exhaust gas velocity

This insulation tape is especially valuable in marine applications where confined engine rooms demand strict temperature control.

Exhaust Manifold Flanges and Seals

Flange for Industrial Exhaust Manifold

The industrial exhaust manifold flange provides a secure connection point for manifold sections or piping. With a 4-inch inside diameter, it is built to handle the heavy-duty exhaust flow of the Cummins N14.

Proper flange installation ensures that exhaust gases move efficiently through the system without leaks or misalignment.

Gasket for Exhaust Manifold Flange

Each flange connection requires a dedicated gasket to maintain a proper seal. These gaskets are designed for 4-inch inside diameter flanges and are heat-treated to withstand long-term exposure to hot exhaust gases.

When replacing exhaust components, both the flange and gasket should be inspected and replaced together to ensure the integrity of the exhaust system.

Mufflers and Noise Reduction

Muffler for Industrial Applications

The industrial muffler plays a critical role in reducing exhaust noise while maintaining proper backpressure. For the Cummins N14, mufflers with a 4-inch inlet and outlet are commonly used.

These mufflers are manufactured with rugged internals designed to withstand vibration, moisture, and prolonged exposure to hot exhaust gases. In marine and industrial environments, mufflers not only reduce noise levels but also help protect operators and crew members from harmful sound exposure.

Features:

• 4-inch threaded inlet and outlet

• Heavy-duty construction for industrial and marine use

• Designed for efficient noise suppression without reducing engine performance

Muffler Caps and End Covers

3-Inch Muffler Cap

The 3-inch muffler cap protects the outlet of the exhaust system from rain, debris, and foreign objects. Built for industrial applications, it provides a tight seal while allowing free exhaust flow when the engine is running.

3.5-Inch Muffler Cap

Slightly larger than the 3-inch version, the 3.5-inch muffler cap provides the same protective function but is designed for systems with larger pipe diameters.

4.5-Inch Muffler Cap

The 4.5-inch exhaust cap is a heavy-duty component that ensures large-diameter exhaust outlets remain free from contamination when the engine is not in operation.

5-Inch Muffler Cap

The 5-inch exhaust cap is the largest option commonly used on Cummins N14 and similar industrial engines. With a strong, durable design, it prevents rainwater and debris from entering the exhaust system, which could otherwise cause corrosion or blockages.

Why Muffler Caps Matter:

• Prevent water intrusion, especially in marine environments

• Extend the service life of exhaust system components

• Reduce corrosion inside mufflers and exhaust piping

• Keep the system free of dirt, dust, and debris

Integration of Exhaust Components in the Cummins N14

When properly installed, the exhaust system of the Cummins N14 works as a unified assembly:

1. Exhaust manifold gaskets seal the cylinder head to the manifold.

2. Insulation tape wraps critical piping to reduce heat loss and protect the engine bay.

3. Flanges and gaskets connect exhaust sections and allow for serviceability.

4. Mufflers reduce noise and control backpressure.

5. Muffler caps protect the system during shutdowns, storage, or outdoor exposure.

Each component plays a vital role in performance, safety, and efficiency.

Why Choose Diesel Pro Power for Cummins N14 Exhaust Parts

• Worldwide Shipping – Fast delivery to over 200 countries.

• Trusted by 40,000+ Customers – A proven track record in marine and industrial diesel parts.

• In-Stock Availability – No long lead times or uncertain backorders.

• Expert Support – Technical specialists ready to help identify the correct exhaust parts for your specific N14 configuration.