Please check notes in each part listing to ensure the Dimmer Switch is correct for your 1972 INTERNATIONAL M800 POST OFFICE with a 4.2L 258 engine. STANDARD MOTOR PRODUCTS, AIRTEX, & ACDELCO are competing brands, and each brand's Dimmer Switch may be interchangeable. Special restrictions like "California only" or "with sport package" may indicate a Dimmer Switch fits only certain 1972 INTERNATIONAL M800 POST OFFICE models.

Clicking a "More Info" link will display a picture and/or other details about that Dimmer Switch in a separate window (you may need to turn off your pop-up-blocking software for this to work).

After choosing a Dimmer Switch, 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 Electrical-Switch & Relay 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.