Cummins Front Crank Seal Service Kit - 89-07 Dodge Cummins 5.9L - 3937111

Thoroughbred Sku #: CUM3937111
Manufacturer Sku #: 3937111

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Product Details

Product Name: Cummins Front Crank Seal Service Kit
Manufacturer: Cummins
Manufacturer Part #: 3937111
Thoroughbred Diesel Part #: CUM3937111
Fitment Notes: 1989-2007 Dodge Cummins 5.9L

Thoroughbred Diesel is an authorized Cummins Dealer and your source of diesel stock parts for your Dodge Diesel. We are also a real diesel repair shop that works on diesel trucks for free advice call toll free at 866-737-4966 or shop now for 1989-2007 Dodge Diesel Crank Seal Kit. At Thoroughbred Diesel we specialize in stock parts for Dodge Cummins Diesels Trucks so save big bucks by shopping for replacement stock parts at

Replaces old part numbers DS-3900709 and DS-3904353.

Cummins replacement front cover crankshaft seal for '89-'07, 5.9L Dodge Cummins Turbo Diesel trucks.

If your crankshaft has a groove worn into the sealing location, you will need a GG-16219 repair sleeve.

Reference Number(s): Cummins: 3904353, 3937111


  • Direct-Fit Replacement
  • Constructed From High Quality Materials
  • Maintains Factory Fit & Performance


  • Please advise if the the red on the sealing edge (to the cover) of Cummins #3937111 crank seal, DOES, or DOES NOT require the additional application of a sealant such as Loctite 545 prior to installation in the cover.

    Michael Blackburn | 8/29/2020

    Yes, Loctite thread sealant 545 is suggested by Cummins.

  • My harmonic balancer does not have dial pin. Can I install it in any position

    Mark | 7/3/2020

    TDC is recommended position.

  • Do I need the depth tool for this seal or is that only needed for the wear sleeve kit?

    Chris Lehky | 1/11/2020

    Depth gauge comes with the seal.

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