DENSO patented U-Groove spark plugs enables complete combustion by allowing the spark to fill the gap created by the U shape. The ball of fire created in the U-Groove develops a larger and hotter flash front that virtually eliminates excessive fouling and erratic starts caused by poor fuel mixtures.

• Innovative u-groove design employs a unique, channeled ground electrode designed to generate a larger spark nucleus at the point of ignition.
• Greater spark energy than ordinary plugs means improved flame travel, producing more complete, consistent, and efficient combustion.
• Developed to meet the demand for improved ignitability, necessary for increased efficiency in emission gas purification and fuel consumption.
• 100 percent pre-fired to ensure reliable operation.
• Copper core center electrode for superior thermal conductivity.

Contact Sixity Auto

• If you have any questions you may reach us via our eBay Contact Form.
• Our U.S.-based customer service agents are available Monday through Friday, 9am-5pm PT.

Checkout & Payments

• Sixity accepts payments from Visa, MasterCard, American Express, Discover, and PayPal.
• All orders delivered to California (CA) are charged the applicable sales tax.

Shipping

• This product features FREE SHIPPING.
• ORDERS PLACED BY 5PM ET WILL SHIP SAME DAY.
• All orders placed after 5pm ET will ship next business day (Monday - Friday) after payment is received. We will email you a tracking number when your order ships.
• Standard shipping via UPS Ground / FedEx Ground / USPS Parcel Post with Delivery Confirmation is $0.
• Expedited shipping via USPS Priority Mail with Delivery Confirmation is $5.99.
• Sorry, no local pickups available.
• We participate in the eBay global shipping program. Please see the 'Shipping and payments' eBay tab above for details on countries outside of the U.S. which we ship to.

Customer Satisfaction

• Sixity Auto stands for value, selection and quality. If you are not satisfied with your purchase please contact us and we'll make it right!
• Our goal is to provide a 5-star experience with our detailed descriptions, clear communications, fast shipping times and low shipping charges.
• We give all our paying customers positive eBay feedback. Please work with us if you have a problem before leaving negative feedback.

Returns and Exchanges

Many of the parts we sell at Sixity Auto only work with specific vehicles. Please double-check the accuracy of your order before purchasing. Check that the reference number, size, and placement are correct. Feel free to contact us with any product or fitment questions.

• If you receive an item other than the item you purchased, or an item that does not fit a vehicle as advertised, contact us within 30 days and we will ship out the correct item, and send you a prepaid mailing label to ship the original product back to us.
• If you receive the item you ordered, but decide you no longer want it, and the item is unopened, ship it back to us within 30 days and we will exchange it or issue a full refund, less the original shipping costs.
• If the item is opened, and has not been used or installed, ship it back to us and we will exchange it or issue a full refund, less the original shipping costs and a 15% re-stocking fee.
• If the item has been installed and/or used, we are unable to accept a return due to safety concerns with used parts.
• Please refer to our contact page for details on how and where to send a return.

About Sixity Auto

Sixity, Inc. launched in 2006 and is based outside of Sacramento, California. We have a dedicated team of product engineers, technicians, and sales staff to bring you the best possible products for your car, truck, motorcycle, snowmobile, or ATV.

• Proud member of the Better Business Bureau, with an A+ Rating.
• Sixity is American-owned and operated.
• Please contact us with any questions about our business or products. All questions are handled locally by personnel in our California offices.