Please check notes in each part listing to ensure the Windshield Washer Pump is correct for your 1978 GMC K25 PICKUP with a 5.7L 350 engine. ACDELCO & TRICO are competing brands, and each brand's Windshield Washer Pump may be interchangeable. Special restrictions like "California only" or "with sport package" may indicate a Windshield Washer Pump fits only certain 1978 GMC K25 PICKUP models.
Clicking a "More Info" link will display a picture and/or other details about that Windshield Washer Pump in a separate window (you may need to turn off your pop-up-blocking software for this to work).
After choosing a Windshield Washer Pump, 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 Wiper & Washer parts, other GMC K25 PICKUP 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 1978 GMC will not be lost if you switch.
