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MA3H – Genuine Cummins 3679139 is an O-ring seal used in Cummins turbocharger and engine sealing applications. Cummins parts data identifies it as a seal, O-ring, and aftermarket application data specifically lists it as a turbo oil supply O-ring for ISX / QSX engines
PAI’s direct equivalent is 121321, and PAI includes that seal in its ISX/X15 turbo mounting gasket kit.
Seal Size: approximately 13.3 mm I.D. × 2.2 mm cross-section
| Weight | .3 lbs |
|---|---|
| Dimensions | 3 × 3 × 3 in |
Any mention of OEM names or OEM product ID numbers/descriptions/model numbers is intended for identification purposes only and does not indicate that it is an OEM part.
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