For part specifications, vehicle fitment and cross reference information, enter a part number in our search box at the top of the page. Once you arrive at a product detail page, you will find tabs with part specifications, reverse vehicle fitment and cross reference data.
For customized engines, non-US vehicles, and advanced technical support, please contact the appropriate part manufacturer:
Autolite: Autolite Answers tech line 855-200-5200.
Bosch: 888-715-3616, 8am-5pm Monday - Friday, CST.
Champion: 1-800-325-8886, 7:30 a.m. – 4:30 p.m. (CST) Monday - Thursday, 7:30 a.m. – 4:00 p.m. (CST) Friday.
Denso: Visit Denso's "Contact Us" page.
E3: 904-567-5994, 10:00 a.m. – 5:00 p.m. (EST) Monday - Friday.
Gates: 303-744-5651, or firstname.lastname@example.org.
NGK: Visit NGK's "Contact Us" page to email technical support, or call their tech line, available 8:30am-7pm, Monday-Friday, EST at 1-877-473-6767, prompt #2.
Pulstar: 1-888-800-6700, 8:00am - 5:00pm (MST) Monday - Friday.