Cummins ISB 4.5 Gasket Catalog

The Cummins ISB 4.5 engine is known for its reliability and performance across industrial, construction, and marine applications. A crucial factor in maintaining this engine’s long service life is the quality and condition of its gaskets and seals. Gaskets prevent leaks, maintain compression, and ensure all fluids stay where they belong, protecting internal components from unnecessary wear.

At Diesel Pro Power, we offer a complete selection of aftermarket gasket sets and individual seals for the Cummins ISB 4.5. With over 40,000 satisfied customers worldwide, our catalog provides everything you need to service or rebuild your engine with confidence.

Complete Gasket Sets for Cummins ISB 4.5

Upper Gasket Set for Cummins ISB 4.5

The upper gasket set contains the seals and gaskets necessary for the top end of the ISB 4.5. It includes intake and exhaust gaskets, valve cover seals, injector seals, and related components. Replacing the upper gasket set is common during top-end overhauls, cylinder head servicing, or whenever compression leaks occur.

Lower Gasket Set for Cummins ISB 4.5

The lower gasket set contains oil pan seals, crankshaft seals, water seals, and other components for the bottom end of the engine. These gaskets are critical to maintaining oil pressure and preventing coolant or oil leaks around the lower block and crankshaft assembly.

Individual Gaskets & Seals for Cummins ISB 4.5

Oil Pick-Up Tube Gasket

Designed for Cummins 4B, 6B, ISB, and QSB engines, the oil pick-up tube gasket ensures a proper seal between the oil pick-up tube and the block. A failure here can cause oil starvation, leading to catastrophic engine failure.

Intake Manifold Cover Gasket

The intake manifold cover gasket provides an airtight seal on the intake system, ensuring proper airflow into the engine. Replacing this gasket is essential during intake servicing or whenever air leaks affect performance.

O-Ring for Aftercooler

This high-temperature O-ring seals the aftercooler connections on Cummins ISB 4.5 and 6.7 engines, as well as related QSB engines. A proper seal ensures that charge air remains cooled and pressurized, preventing power loss and maintaining efficiency.

Valve Cover Gasket

The valve cover gasket for the ISB 4.5 prevents oil leaks from the top of the cylinder head. This gasket is designed for durability under high-temperature cycles and is one of the most frequently replaced seals during maintenance.

Cover Plate Gasket

Used on multiple Cummins engines including the ISB 4.5, this gasket seals cover plates against the block. A precise fit ensures oil and coolant remain contained under high pressure.

Fuel Injection Pump Gasket

The fuel injection pump gasket ensures tight sealing where the injection pump mounts to the engine. This prevents fuel leaks that could affect performance or safety.

Oil Cooler Cover Gaskets

Two versions of oil cooler cover gaskets are available for Cummins ISB engines. These gaskets seal the interface between the oil cooler and its cover, ensuring oil flows properly without external leaks.

Turbo Oil Drain Gasket

This gasket seals the turbocharger oil drain line to the block, preventing leaks that can lead to oil loss and turbo damage.

Oil Cooler Core Gasket

The oil cooler core gasket provides a reliable metal-to-metal seal between the oil cooler and block. Its high durability is essential for engines running under heavy load conditions.

Water Pump Seal Ring

The water pump seal ring ensures coolant remains contained within the cooling circuit, preventing overheating and ensuring proper thermal regulation.

Thermostat Seal

The thermostat seal for ISB and QSB engines prevents coolant leaks around the thermostat housing. A worn seal can cause coolant loss and engine overheating.

Gasket Sealants & Compounds for Cummins ISB 4.5

In addition to physical gaskets, proper sealing compounds and adhesives are critical for long-lasting engine performance. Diesel Pro Power carries a variety of high-quality sealants suitable for Cummins and Detroit Diesel engines.

High-Temperature Jointing Compound

A specialized compound designed for turbocharger applications, capable of withstanding extreme heat from 550°C to 760°C.

Gasket Spray – High Tack Sealant

Ideal for holding cut gaskets in place during assembly. This sealant increases reliability by preventing leaks under vibration and thermal cycling.

Liquid Sealant

A flexible, durable option for sealing engine components where traditional gaskets may not be sufficient.

High Strength Threadlocker (Red)

Used for bolts and fasteners subject to vibration, ensuring they remain securely in place.

RTV Silicone Gasket Makers

Available in high-temperature, ultra-blue, and sensor-safe formulations, RTV gasket makers are essential for sealing water pumps, valve covers, and other components.

J-B Weld – Cold Weld

A versatile cold welding compound suitable for small repairs and reinforcement where a gasket or seal is not enough.

Non-Hardening Pliable Sealant

A flexible sealant that remains pliable, making it perfect for joints that require ongoing flexibility.

Why Choose Diesel Pro Power for Cummins ISB 4.5 Gaskets

• Comprehensive coverage: From complete gasket sets to specialized seals, everything you need is in one catalog.

• Trusted by 40,000+ customers worldwide: Reliability proven across marine, construction, and industrial engines.

• High-quality aftermarket solutions: Engineered for durability, performance, and compatibility with Cummins ISB 4.5 engines.

• Fast shipping & availability: Most gasket sets and sealants are stocked and ready to ship globally.