New Factory Mazda OEM camshaft cap plug for NB Mazda Miata. This is the cap plug in the back of the cylinder head. Part number KLG4-12-603. Fits 1990-2005. California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov Photographs are stock photos only and the purchased product may vary. Photographs of the purchased product can be emailed upon request.