https://carpartskey.com/product/6x-check-valve-4p-7688-for-caterpillar-cat-3406b-3406c-3408b-3408c-3412-3412c/
6x Check Valve 4P-7688 for Caterpillar CAT 3406B 3406C 3408B 3408C 3412 3412C - carpartskey.com
Jun 2, 2025 - Notice: Please check the part No. If it is the correct one you need. The part No. Is usually stamped around its body. If you are not sure about the part No. Or...