Please check notes in each part listing to ensure the Idler Pulley Bearing is correct for your 1981 MERCEDES-BENZ 300CD with a 3.0L DIESEL engine. Special restrictions like "California only" or "with sport package" may indicate a Idler Pulley Bearing fits only certain 1981 MERCEDES-BENZ 300CD models.
Clicking a "More Info" link will display a picture and/or other details about that Idler Pulley Bearing in a separate window (you may need to turn off your pop-up-blocking software for this to work).
After choosing a Idler Pulley Bearing, 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 "Find More Parts" to find more Belt Drive parts, other MERCEDES-BENZ 300CD parts or parts for a different vehicle. Please try our Interactive Catalog (click link above) for faster searching. Both catalogs use the same shopping cart so any auto parts you've already chosen for your 1981 MERCEDES-BENZ will not be lost if you switch.