You can contact us thru email at info@ngkwholesale.com .

Or you can write us at:  

NGKwholesale.com
Attn: Returns Dept
P.O. Box 888
Sun City, California 92586-0772

Phone: (951) 679-7146

NGKWholesale.com is a DBA operated and owned by
Courtesy Distributing Company
P.O. Box 888
Sun City, California 92586-0772