NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist™. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability; manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services. NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. CHEV 2000-87; CHR/DOD/EAG/PLY 1993-78; FORD 1997-88; GEO 1997-89; HON 1987-84; HYUNDAI 1998-86; ISUZU 1993-81; MAZDA 1976; MITSUBISHI 1996-83; NIS 1988-75; SUBARU 1995-76; SUZ 1994-89, M/C - 1985-1983 HARLEY-DAVIDSON