Please check notes in each part listing to ensure the Differential Pinion Seal is correct for your 1972 INTERNATIONAL M800 POST OFFICE with a 4.2L 258 engine. Special restrictions like "California only" or "with sport package" may indicate a Differential Pinion Seal fits only certain 1972 INTERNATIONAL M800 POST OFFICE models.

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After choosing a Differential Pinion Seal, click the "Add Part" button. Shipping costs will be shown on the Shopping Cart page. You may use your browser's Back button, or click on "Find More Parts", to find more Drivetrain parts, other INTERNATIONAL M800 POST OFFICE parts, or parts for a different vehicle. Please try our Interactive Catalog (click red Start button above) for faster searching. Both catalogs use the same shopping cart, so any auto parts you've already chosen for your 1972 INTERNATIONAL will not be lost if you switch.