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Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Autolite Racing Spark Plugs are used by many professional race car drivers. These spark plugs contain an Yttrium-Enhanced Alloy, which enables up to 8 percent reduction in side wire temperature for improved durability and less pre-ignition. Autolite racing plugs are available in colder heat ranges than most plug manufacturers to support modified engines and feature a cut background electrode for improved ignitibility and faster flame kernel growth. They are also nickel plated for a long-lasting, corrosion-resistant finish. Since its inception, the Autolite brand has provided the automotive aftermarket and Original Equipment manufacturers the highest quality ignition products. Autolite has been in operation for over 100 years and has produced more than 11 billion spark plugs and glow plugs. These plugs are specifically designed for each application to meet or exceed OE quality and performance. Autolite makes plugs for Japanese, European, and Korean cars as well as plugs for Lawn & Garden and Power Sports. As a leading supplier of spark plugs, the Autolite brand has the right ignition products for your application, regardless of make or model, import or domestic.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
Frequently Asked Questions
Q: What are the dimensions of the Autolite AR3911-4PK spark plugs?A: The dimensions of each spark plug are three point thirty-nine inches in length, four point zero two inches in width, and one inch in height.
Q: What materials are used in the Autolite AR3911-4PK spark plugs?A: These spark plugs feature an Yttrium-enhanced alloy and are coated in nickel plating for corrosion resistance.
Q: How many spark plugs are included in the Autolite AR3911-4PK pack?A: The pack includes four spark plugs designed for high performance racing.
Q: How do I install the Autolite AR3911-4PK spark plugs?A: To install, ensure the engine is cool, remove the old plugs, and screw in the new plugs by hand before tightening them with a wrench.
Q: Are the Autolite AR3911-4PK spark plugs suitable for modified engines?A: Yes, these spark plugs are specifically designed to support modified engines with colder heat ranges.
Q: What is the purpose of the Yttrium-enhanced alloy in these spark plugs?A: The Yttrium-enhanced alloy helps reduce side wire temperature by up to eight percent, improving durability and reducing pre-ignition.
Q: How do I care for the Autolite AR3911-4PK spark plugs?A: Regularly check for corrosion and ensure they are properly torqued during installation to maintain performance.
Q: Can I use the Autolite AR3911-4PK spark plugs in any vehicle?A: These plugs are suitable for various makes and models, including Japanese, European, and Korean cars, but ensure they match your engine's specifications.
Q: What is the warranty period for the Autolite AR3911-4PK spark plugs?A: Autolite typically offers a limited warranty on their spark plugs, which may vary by retailer, so check with your purchase source for specifics.
Q: What do I do if my Autolite AR3911-4PK spark plugs arrive damaged?A: If the spark plugs arrive damaged, contact the seller or retailer immediately for return and replacement instructions.
Q: Are the Autolite AR3911-4PK spark plugs resistant to rust?A: Yes, they are coated in anti-corrosive nickel plating to prevent rust and extend their lifespan.
Q: What racing conditions are the Autolite AR3911-4PK spark plugs designed for?A: These spark plugs are designed for high-performance racing conditions, including modified engines and intense driving situations.
Q: Is professional installation recommended for the Autolite AR3911-4PK spark plugs?A: While installation can be done at home, professional installation is recommended for optimal performance and to avoid potential issues.
Q: What features make the Autolite AR3911-4PK spark plugs stand out?A: They feature a cut back ground electrode for improved ignitability and are specifically engineered for high performance.
Q: Can I use the Autolite AR3911-4PK spark plugs in lawn and garden equipment?A: These spark plugs are primarily designed for automotive applications, but check compatibility with specific lawn and garden equipment models.