CUMMINS 3970886 Engine Crankcase Breather Gasket Isc CM554

( Brand: Cummins ), ( Manufacturer Part Number: 3970886 ), ( Type: Breather Gasket ), ( Country Of Origin: United States )

Review CUMMINS Engine Crankcase Breather Gasket Isc Series fits CM850

Cummins Crankcase Breather Gasket (3970886) for ISC CM554 and CM850 Engines

The Cummins Crankcase Breather Gasket (Part Number: 3970886) is a crucial component designed for use in Cummins ISB (Interim Solution Bulletin) engines, specifically the ISC (Integrated Service Cooled) models CM554 and CM850. This gasket plays a vital role in the engine's crankcase ventilation system, ensuring proper sealing and function.

Constructed from high-quality materials, this crankcase breather gasket is engineered to withstand the extreme conditions and pressures found in heavy-duty commercial applications. It features a durable, heat-resistant design that effectively seals the crankcase breather port, preventing the escape of crankcase gases and maintaining the integrity of the engine's combustion chamber.

The gasket's dimensions are precise, ensuring a perfect fit for the specified Cummins engines. Its oval shape and dimensions (approximately 6.2 inches long and 4.5 inches wide) accommodate the unique contours and layout of the engines' crankcase breather ports.

Installation of the Cummins Crankcase Breather Gasket is a straightforward process. It replaces the old, worn-out gasket that may have developed leaks or cracks over time, potentially causing issues such as loss of engine power, reduced fuel efficiency, or engine misfires.

By using this genuine Cummins Crankcase Breather Gasket (3970886), you can restore the crankcase ventilation system to its optimal performance and extend the life of your engine. It is recommended to replace this gasket during routine engine maintenance to prevent potential issues and ensure the longevity and reliability of your Cummins ISB engine.

In conclusion, the Cummins Crankcase Breather Gasket (3970886) is an essential component for maintaining the health and longevity of your ISC CM554 and CM850 engines. Its durable, heat-resistant design, precise dimensions, and easy installation make it an invaluable addition to your engine maintenance arsenal.

The Cummins 3970886 engine crankcase breather gasket is a vital component in the air management system of ISC (Interim Select Catalyst) engines, specifically the CM554 and CM850 models. This gasket separates the crankcase and intake manifold, allowing the crankcase gases to exit through the breather system instead of entering the intake system. Let's discuss some pros and cons of purchasing this Cummins gasket.

1. Improved engine performance: A worn-out or damaged crankcase breather gasket can cause crankcase gases to enter the intake system. This can lead to a decrease in engine performance as the gases can dilute the air-fuel mixture. Replacing the gasket with a new one will ensure proper separation of crankcase gases and intake air, allowing your engine to perform optimally.

2. Reduced emissions: By preventing crankcase gases from entering the intake system, the gasket helps in reducing the overall emissions from your engine. This is particularly important for diesel engines, which are known to produce higher levels of crankcase gases than gasoline engines.

3. Better fuel economy: With improved engine performance and reduced emissions, you can expect better fuel economy from your vehicle. The engine will operate more efficiently, using less fuel to generate the same power output.

4. Longer engine life: A new crankcase breather gasket ensures that the engine's crankcase gases are properly managed, preventing any potential damage to the intake system or catalytic converter. This not only helps in maintaining the engine's current condition but also extends its overall life.

1. Cost: The Cummins 3970886 engine crankcase breather gasket is a relatively expensive component. While it is a crucial part of the engine's air management system, the high price tag may deter some buyers.

2. Labor costs: If you are not experienced in engine repair or do not have the necessary tools, replacing the gasket yourself may not be an option. In that case, you will need to pay for labor costs, which can add to the total expense.

The Cummins 3970886 engine crankcase breather gasket is an essential component of the ISC CM554 and CM850 engines that plays a crucial role in maintaining proper engine performance, reducing emissions, and improving fuel economy. While the cost of the gasket and potential labor expenses may be a concern for some buyers, the benefits it provides in terms of engine longevity, improved performance, and reduced emissions make it a worthwhile investment. If you are experiencing issues with your engine's crankcase breather gasket, it is highly recommended to replace it as soon as possible.

Details:

CUMMINS 3970886: Engine Crankcase Breather Gasket For ISC Series CM554, CM850.

part #: 3970886 prices

• $8.99-$18.44

specifications commerciatruc:

• for models: Cm850
• brand: Cummins
• mpn: 3970886
• type: Breather Gasket
• country of origin: United States

offer commerciatruc:

• availability: In Stock
• options: Ship-to-home
• started: March 13, 2026
• sold: 0
• quantity: 1

payments commerciatruc:

• wallet: Paypal
• other
• credit card: Diners-club

returns commerciatruc:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

shipping commerciatruc:

• service: USPS Ground Advantage
• cost: $0.00
• type: Fixed
• carrier: USPS
• transit: 5-11 Days
• class: Standard

general commerciatruc:

• condition: New other see details
• Parts Accessories > Commercial Truck Parts > Other Commercial Truck Parts

seller commerciatruc:

• # reviews: 60529
• city: North Salt Lake, Utah
• rating: 99.7%

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