Cummins 3976371 Fuel Injector Sealing Washer

This Cummins 3976371 Copper Injector Sealing Washer is a Brand New OEM Cummins part.

What can happen if I reuse my original fuel injector sealing washers?

If you decide not to replace these sealing washers, the high compression produced by your diesel engine will escape around the fuel injector. All of your power will escape around the outside edge of your fuel injector. The loss of engine compression will produce a complete mess of the fuel injectors and fuel rail.

Cummins 3976371 applications:

2003 to 2007 Cummins 5.9L Turbo Diesel Engines
2007.5 to 2018 Cummins 6.7L Turbo Diesel Engines
Cummins Tier 3 Automotive 8.9 liter ISL engines.
Cummins Tier 3 Automotive 8.9 liter ISC engines.

Cummins Fuel Injector Sealing Washer Specifications:

Washer Diameter 5.75mm
Washer Height 1.50mm

This new sealing washer is for the correct installation of the Cummins 5.9L and Cummins 6.7L fuel Injectors. A quantity of 6 Injector sealing washers is necessary for a complete injector service. This seal injector washer is a brand new OEM Cummins replacement part that is covered by the Cummins Warranty.

What are the benefits obtained by purchasing an OEM Cummins part?

Genuine Cummins Parts are backed with a manufacturer's warranty.
Genuine Cummins Parts provide optimum engine efficiency and peak power levels you need to get the job done.
OEM Cummins parts provide the exact fit for a straightforward installation reducing your downtime.
Cummins parts ensure you're up and running for financial protection and peace of mind.

NOTE: The image presented for the Cummins 3937142 Injector Sealing Washer is not an accurate representation of this product!

Engine: 5.9L Cummins | 6.7L Cummins | 8.9L ISL Cummins | 8.9L ISC Cummins
Flow Rate :
Item Number: Cummins 3976371
Make : : Cummins | Dodge | Ram
Model : 2500 | 3500 | 4500 | 5500
Year : 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018
Manufacturer Part No: Cummins 3976371
Product Application: 2003 to 2018 Cummins 5.9L and 6.7L Copper Injector Sealing Washer
Height: 4
Width : 5
Brand: Cummins
FAQ: Can I reuse this crush washer on my fuel injectors? No, this product is a single-use only product that is not designed for reuse due to the extreme pressures exerted by a Diesel engine. How do I know if this is the correct injector seal for my Cummins engine? If you have any doubts, please Contact Us with your ESN, and we will gladly look for the correct part for you.
Part Number: 3937142
Manufacturer: Cummins
Product Note: OEM Cummins Parts Are A Non-Returnable Item. Please ensure you have ordered the correct part for your Cummins diesel engine!

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