MA3H – Cummins 3678603 is an OEM O-ring seal used across multiple Cummins diesel-engine applications. Current cross-reference data ties it directly to PAI 121289, Interstate-McBee M-3678603, several International/Navistar numbers, and Caterpillar 6V9028. PAI’s equivalent 121289 is described as an M12 × 1.5 fitting-thread O-ring, approximately 9.3 mm I.D. × 2.2 mm cross-section, Buna-N 90.
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MA3H –
Cummins 3678603 is an OEM O-ring seal used across multiple Cummins diesel-engine applications. Current cross-reference data ties it directly to PAI 121289, Interstate-McBee M-3678603, several International/Navistar numbers, and Caterpillar 6V9028.
PAI’s equivalent 121289 is described as an M12 × 1.5 fitting-thread O-ring, approximately 9.3 mm I.D. × 2.2 mm cross-section, Buna-N 90.
| Weight | .3 lbs |
|---|---|
| Dimensions | 3 × 3 × 1 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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