CUMMINS 3680921R Flywheel Hken 409.KWHC16 12740069

( Brand: Cummins ), ( Manufacturer Part Number: 3680921R ), ( Model: HKEN-CONV ), ( Part Type: Flywheel ), ( Conditions Options: Isx, Mt, Tkw, T5 ), ( Genuine Oem: Yes ), ( Ipn: 409.kwhc16 )

Review CUMMINS Flywheel fits ISX 2016

Introducing the Cummins 3680921R ISX Flywheel, a critical component in the powertrain system of your heavy-duty vehicle. This flywheel, specifically part number 12740069, is engineered to deliver exceptional durability and reliability, ensuring smooth and efficient power transmission from the engine to the transmission.

The Cummins ISX Flywheel is precision-machined using high-quality materials, primarily cast iron, to ensure optimal balance and rigidity. Its robust design can withstand the high torque loads generated by powerful ISX engines, making it an essential component for heavy-duty applications.

One of the key features of this flywheel is its double-shear keyway design. This innovative feature enhances the flywheel's connection to the engine crankshaft, ensuring a secure and reliable fit. The double-shear keyway design also allows for the use of oversized keys, providing increased torque capacity and reducing the risk of key failure.

Additionally, the Cummins ISX Flywheel is designed with a pressure plate boss for the powertrain control module (PCM) vacuum line. This integration simplifies the installation process and eliminates the need for additional brackets or adapters, making it a more cost-effective solution.

This flywheel also comes with a pilot bushing pre-installed, which facilitates the alignment and installation of the clutch assembly. This not only saves time during the installation process but also ensures a more accurate and secure fit, reducing the risk of clutch misalignment or damage.

In conclusion, the Cummins 3680921R ISX Flywheel, part number 12740069, is a high-performance component designed to deliver superior durability, reliability, and ease of installation in heavy-duty applications. Its robust design, innovative features, and integration with the powertrain control module make it an essential upgrade for your ISX engine, ensuring smooth and efficient power transmission and prolonging the life of your vehicle's powertrain system.

Pros and Cons of Buying Cummins 3680921R ISX Flywheel (12740069)

The Cummins 3680921R ISX Flywheel (12740069) is a crucial component of a diesel engine, responsible for storing and releasing engine power. Like any other automotive part, it comes with its advantages and disadvantages.

1. Durability: Cummins is a renowned manufacturer of heavy-duty engine components, and their flywheels are known for their durability and strength. This flywheel is designed to handle the high torque and power output of the ISX engine, ensuring a long service life.

2. Precision-Machined: The Cummins 3680921R ISX Flywheel is precision-machined, ensuring a perfectly balanced and smooth-running component. This can lead to better engine performance and reduced vibrations.

3. OEM Part: By purchasing the OEM (Original Equipment Manufacturer) flywheel, you can ensure that it is an exact fit for your ISX engine, and that it meets the strict quality standards set by Cummins.

1. Cost: OEM parts, such as the Cummins 3680921R ISX Flywheel, can be more expensive than aftermarket alternatives. This may be a significant consideration for some buyers, particularly those working on a tight budget.

2. Availability: Depending on the specific application and location, the Cummins 3680921R ISX Flywheel may not always be readily available at local parts stores or through online retailers. This could result in a longer wait time for the part.

3. Installation Complexity: Installing a flywheel can be a complex process, requiring specialized tools and knowledge. It is recommended that the installation be performed by a qualified mechanic to ensure that it is done correctly and safely.

The Cummins 3680921R ISX Flywheel (12740069) offers several advantages, including durability, precision machining, and OEM quality. However, it comes with a higher cost and potential availability issues. If you are looking for a reliable and long-lasting flywheel for your ISX engine, the Cummins OEM part may be the best choice. However, if cost is a major concern, you may want to consider aftermarket alternatives. Ultimately, the decision depends on your individual needs, budget, and preferences.

Details:

Labor and costs associated with part installation are not covered under warranty. ISX,MT,15.5 ,114T,T800,TKW,T5.

part #: 3680921r prices

• $258.72-$293.68

specifications othellodrivetrain:

• for models: Isx
• for years: 2016
• brand: Cummins
• mpn: 3680921r
• model: Hken-conv
• part type: Flywheel
• conditions options: Isx, Mt, Tkw, T5
• genuine oem: Yes
• ipn: 409.kwhc16

shipping othellodrivetrain:

• carrier: FedEx
• transit: 4-6 Days
• cost: $0.00
• class: Standard
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery

offer othellodrivetrain:

• options: Ship-to-home
• availability: In Stock
• started: February 14, 2026
• quantity: 1
• sold: 0

returns othellodrivetrain:

• policy: Returns Accepted
• time: 60 Days
• paid by: Seller

seller othellodrivetrain:

• rating: 99.8%
• city: Spokane, Washington
• # reviews: 45825

payments othellodrivetrain:

• wallet: Apple-pay
• credit card: Diners-club
• other

general othellodrivetrain:

• condition: Used
• Car Truck Parts Accessories > Transmission Drivetrain > Flywheels Flexplates

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