Jagg Oil Coolers for Harley-Davidson Motorcycles
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Service Kit for Jagg 4000 Manual By-pass Valve

Service Kit for Jagg 4000 Manual By-pass Valve

Part # SK4000

$ 6.00

SK4000 and SK4000-0923 service kit contain all the parts necessary for refurbishment of your Jagg 4000 Manual By-pass Valve.

As of September 2024, we introduced a new 4000 unit that requires a different service kit due to modified internal characteristics.

Please, reference the photos to decide which 4000 version you have, and subsequently, which service kit you will require.

  • The SK4000 (for the old style 4000 unit) contains two o-rings, a snap ring retaining clip, and a spare decal. 
  • The SK4000-0924 (for the newer version 4000 unit) contains two o-rings, a snap ring retaining clip, and a small tube of installation oil. 

Installation Instructions


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