Please check notes in each part listing to ensure the Air Check Valve is correct for your 1970 GMC P25/P2500 VAN with a 5.0L 307 engine. Special restrictions like "California only" or "with sport package" may indicate a Air Check Valve fits only certain 1970 GMC P25/P2500 VAN models.
Clicking a "More Info" link will display a picture and/or other details about that Air Check Valve in a separate window (you may need to turn off your pop-up-blocking software for this to work).
After choosing a Air Check Valve, 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 Emission parts, other GMC P25/P2500 VAN 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 1970 GMC will not be lost if you switch.