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Cummins 14mm I.D. Sealing Washer

Thoroughbred Sku #: CUM3963988
Manufacturer Sku #: 3963988

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$6.68

Fitment NOTE: Used in several applications on 5.9 and 6.7 fuel systems, including the sealing washer for the overflow valve on VP44 equipped applications

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Product Details

Product Name: Cummins 14mm I.D. Sealing Washer
Manufacturer: Cummins
Manufacturer Part #: 3963988
Thoroughbred Diesel Part #: CUM3963988
Fitment Notes: 1998.5-2024 Cummins 5.9L / 6.7L

Cummins 14mm I.D. sealing washer used in several applications on 5.9L and 6.7L fuel systems, including the sealing washer for the overflow valve on VP44 equipped applications.

Cummins 14mm I.D. Sealing Washer Features:

Direct-Fit Installation
Quality Construction
Genuine OEM Replacement
For more information on Cummins call us at 1-859-737-4966

Reviews

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Is this the correct banjo washer for the fuel rail on a 2017 ram

Austin | 2/26/2026
Can not answer? Need to know where on the fuel rail.
Is this the correct washers for the banjo bolt for the fuel return on the back of the head on a 01 24v?

James | 2/24/2026
No. You will need the 12MM washer for that location 3935171

3963988, CUM3963988