Cummins N14 Gasket Kits & Sealing Components

The Cummins N14 is one of the most trusted heavy-duty diesel engines ever produced, known for its balance of power, durability, and serviceability. Whether in marine, industrial, or on-highway applications, the N14 engine requires reliable gasket kits and sealing components to maintain performance and prevent leaks. At Diesel Pro Power, we supply high-quality gasket kits for Cummins N14 engines, serving more than 40,000 satisfied customers worldwide who depend on our fast shipping, in-stock inventory, and expert support.

This section focuses exclusively on Cummins N14 gasket kits and sealing solutions, helping you choose the right upper and lower gasket sets, exhaust manifold gaskets, oil pan gaskets, fuel pump gaskets, and sealants for both routine maintenance and full overhauls.

Importance of Gasket Kits in Cummins N14 Engines

Gaskets and seals play a critical role in the performance of the Cummins N14 engine. They provide tight sealing between components, preventing oil, coolant, fuel, and combustion gases from leaking. A failing gasket can cause significant downtime, expensive repairs, and even engine failure.

Key functions of N14 gaskets include:

• Maintaining Compression – Cylinder head and upper gaskets ensure combustion chambers are tightly sealed.

• Preventing Oil Leaks – Oil pan gaskets and seals keep lubrication contained within the crankcase.

• Sealing Exhaust Flow – Exhaust manifold gaskets prevent leaks that could lead to loss of performance and overheating.

• Protecting Fuel Delivery – Fuel pump gaskets prevent leaks around the coupling area, ensuring clean and efficient fuel injection.

• Supporting Long-Term Reliability – Gasket kits reduce the risk of premature wear by keeping fluids separated and contained.

Cummins N14 Gasket Kit Catalog

Exhaust Manifold Gasket for Cummins N14

The exhaust manifold gasket is essential for sealing the connection between the exhaust manifold and cylinder head. On the N14, a complete engine typically requires six exhaust manifold gaskets.

• Designed to withstand high temperatures.

• Prevents exhaust gas leaks that can reduce engine performance.

• Ensures proper turbocharger function by maintaining pressure.

Upper Gasket Sets for Cummins N14

Upper gasket sets contain all of the seals and gaskets needed for top-end rebuilds. These are particularly useful when servicing cylinder heads, injectors, and valve covers.

• Standard Upper Gasket Set – Includes head gaskets, valve cover gaskets, intake gaskets, and seals.

• CELECT-Specific Upper Gasket Set – Tailored for Cummins N14 CELECT engines, ensuring proper fitment with electronically controlled components.

Upper gasket sets are ideal for technicians performing top-end rebuilds or addressing cylinder head issues.

Lower Gasket Sets for Cummins N14

Lower gasket sets are designed for the bottom half of the engine, including oil pan gaskets, crankshaft seals, and related components.

• 1991–1993 Engines – A lower gasket set specifically designed for early N14 engines.

• 1994 and Later Engines – Updated lower gasket sets for newer production models.

Having the correct lower gasket set ensures full compatibility with your specific N14 engine build year.

Oil Pan Gasket for Cummins N14

The oil pan gasket provides a tight seal between the oil pan and the engine block, preventing leaks that could reduce lubrication and cause damage.

• Compatible with Cummins NH, NT855, and N14 engines.

• Built to resist high oil temperatures and pressure.

• Easy to replace during oil pan removal or lower-end servicing.

Fuel Pump Gasket for Cummins N14

The fuel pump gasket is a small but vital component that prevents fuel leaks where the pump couples to the engine.

• Works with Cummins L10, M11, N14, and larger engines such as KTA19, KTA38, and KTA50.

• Designed to handle high-pressure diesel injection environments.

• Protects against contamination and loss of fuel efficiency.

Fan Hub Oil Seal for Cummins N14

The fan hub oil seal prevents oil leaks around the fan drive hub, an important component for engine cooling.

• Compatible with NH855, NT855, and N14 engines.

• Prevents premature wear of the fan hub bearings.

• Helps maintain stable engine operating temperatures.

Thermostat Gasket for Cummins N14

The thermostat gasket ensures a leak-free seal around the thermostat housing, preventing coolant leaks that can cause overheating.

• Designed for Cummins L10, M11, and N14 engines.

• Resistant to coolant additives and high heat.

• Ensures reliable temperature regulation.

Gasket Sealants, Sprays, and Compounds

In addition to pre-formed gaskets, technicians often use sealants to enhance sealing performance or repair irregular surfaces. Diesel Pro Power stocks a full range of high-performance sealants and gasket makers.

High-Temperature Jointing Compound

• Designed for use with Cummins and Detroit Diesel turbochargers.

• Handles temperatures up to 760°C.

• Prevents leaks in extreme heat conditions.

Gasket Spray – High Tack Sealant

• Provides extra adhesion for cut gaskets.

• Prevents gasket slippage during installation.

• Ideal for both Cummins and Detroit Diesel engines.

Liquid Gasket Maker – 3H Sealant

• Creates a flexible, oil-resistant seal.

• Suitable for sealing flanges, housings, and covers.

Silicone-Based Gasket Makers

• Sensor-Safe RTV Silicone – Will not damage sensitive sensors.

• High-Temp RTV Silicone – Designed for exhaust and turbo applications.

• Ultra Blue RTV Silicone – Offers excellent flexibility and vibration resistance.

Threadlocker Red – High Strength

• Prevents fastener loosening due to vibration.

• Used in critical areas of Cummins and Detroit Diesel engines.

J-B Weld Cold Weld

• A metal-bonding epoxy solution for emergency gasket or component repairs.

• Used on non-moving parts and housings where a permanent bond is required.

Choosing the Right Gasket Kit for Your Cummins N14

When selecting gasket kits for your Cummins N14 engine, consider:

• Engine Serial Number & CPL – Ensures compatibility with upper or lower gasket sets.

• Year of Manufacture – Determines which lower gasket set is required (1991–1993 or 1994+).

• Electronic vs Mechanical – CELECT engines require specific gasket configurations.

• Application – Marine, industrial, or on-highway use may influence gasket materials and sealants.

Why Buy Cummins N14 Gaskets from Diesel Pro Power

• Fast Global Shipping – We deliver Cummins N14 gasket kits worldwide, with orders processed quickly.

• Trusted by 40,000+ Customers – A proven track record of quality service and dependable parts.

• Expert Guidance – Our team ensures you get the correct gaskets for your engine.

• All-in-One Inventory – From upper and lower gasket kits to individual seals and compounds, we stock everything you need.