Cummins ISC Parts – Exhaust System Components

The exhaust system on a Cummins ISC engine is critical for both efficiency and durability. From manifold bolts that keep components tightly sealed, to gaskets that prevent leaks, and insulation tape that maintains safe operating temperatures, every part contributes to overall performance. At Diesel Pro Power, we supply genuine and aftermarket exhaust manifold components for Cummins ISC and related engines, with worldwide shipping and a proven record of 40,000+ satisfied customers.

Exhaust Manifold Hardware for Cummins ISC

Exhaust Manifold Bolts for Cummins ISC, QSC, ISL, and Related Engines

A strong and properly torqued bolt is the foundation of a leak-free exhaust system. Our exhaust manifold bolts are designed for Cummins ISC engines and compatible with related platforms including 6C8.3, 6CT8.3, 6CTA8.3, QSC, L10, ISL, and QSL.

These bolts are specifically engineered for:

• Exhaust manifold attachment on marine and industrial applications.

• Alternator bracket mounting, ensuring auxiliary components remain firmly secured.

• Refrigerant compressor installation, where vibration resistance is crucial.

By replacing fatigued or corroded bolts, operators can prevent exhaust leaks that lead to loss of power and increased emissions.

Exhaust Manifold Gaskets for Cummins ISC

Outlet Connection Gasket for Cummins ISC

The exhaust manifold outlet connection gasket ensures a tight seal between the manifold and exhaust piping. A worn gasket can cause leaks, increased exhaust noise, and reduced engine efficiency. Diesel Pro Power supplies durable replacement gaskets that meet OEM specifications, ensuring long service life in both marine and stationary applications.

Intake and Crossover Manifold Gaskets

While primarily part of the intake system, these components play an essential role in maintaining pressure balance across the manifold.

Intake Manifold Cover Gaskets

We supply intake manifold cover gaskets for Cummins ISC and QSC engines. These gaskets prevent air leaks that would otherwise disrupt combustion efficiency. Multiple sizes and styles are available to ensure compatibility with your specific engine configuration.

Intake Connection Gasket

The intake connection gasket ensures a secure fit between intake manifold components. Designed for ISC, QSC, 6C, and 6CT engines, this gasket maintains the pressurized air pathway critical for turbocharged performance.

Exhaust Manifold Insulation & Heat Protection

Manifold Insulation Tape

High exhaust temperatures require specialized thermal protection. Manifold insulation tape helps contain heat, reduce under-hood temperatures, and protect surrounding components such as wiring and hoses.

Available options include:

• 3-inch wide insulation tape (100 feet roll, 1/8" thick) – ideal for compact installations.

• 4-inch wide insulation tape (100 feet roll, 1/8" thick) – for larger exhaust manifold coverage.

Proper insulation helps improve engine bay safety and protects against heat fatigue, particularly in marine engine rooms where ventilation may be limited.

Exhaust Flanges, Mufflers, and End Caps

In addition to Cummins ISC-specific components, Diesel Pro Power also supplies industrial exhaust system accessoriessuitable for marine and generator applications.

Exhaust Flanges

• 4-inch inside diameter flange – provides a durable mounting point for exhaust piping.

Flange Gaskets

• Designed to pair with the 4-inch flange, ensuring a reliable seal against exhaust gas leaks.

Industrial Mufflers

• 4-inch diameter mufflers with NPT inlet and outlet threads are available for industrial engine exhaust systems.

• Designed to reduce noise while maintaining optimal backpressure levels.

Muffler End Caps

Muffler caps protect exhaust outlets from debris, moisture, and corrosion. Available in multiple diameters to match industrial exhaust systems:

• 3" cap

• 3.5" cap

• 4.5" cap

• 5" cap

These components are particularly valuable for marine applications, where exposure to saltwater environments increases the risk of corrosion.

Monitoring Your Exhaust System

Diesel Pro Power also supplies mechanical and electrical gauges to monitor exhaust backpressure, temperature, and related engine health indicators. Available in both 12-volt and 24-volt versions, these gauges are essential for preventive maintenance and early detection of potential exhaust restrictions.

Why Exhaust Manifold Maintenance is Critical on Cummins ISC Engines

The Cummins ISC engine is widely used in marine, industrial, and generator applications, where extended run times and high load conditions place significant stress on the exhaust system.

Key reasons to maintain your exhaust manifold system include:

• Preventing exhaust leaks – which can cause turbocharger inefficiency and increased fuel consumption.

• Protecting cylinder head integrity – warped manifolds or weak bolts can damage head surfaces.

• Reducing engine room heat – insulation tape and properly sealed manifolds lower ambient temperature.

• Improving operator safety – by preventing carbon monoxide leaks into occupied compartments.