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Enhance your vehicle’s hardline plumbing with the Earl’s 5/16 in. Easy-Form Copper-Nickel Hardline Tubing, engineered for strength, corrosion resistance, and easy installation. Constructed from a premium copper-nickel alloy containing approximately 90% copper and 10% nickel, this tubing delivers steel-like durability while remaining significantly easier to bend and flare. Its Easy-Form design allows the tubing to be shaped by hand without the need for a tubing bender, making it ideal for both professional and DIY automotive applications.
This DOT-approved hardline tubing has been trusted in OEM brake system applications since the 1970s and is suitable for a wide range of automotive hardline uses, including brake lines, fuel lines, and transmission cooler lines. Unlike standard copper tubing, it resists rust and corrosion while supporting a 2,100 PSI maximum working pressure. The natural finish can also be polished to a bright copper appearance, providing a clean, professional look for custom engine bays and restorations.
Features:
Easy-Form copper-nickel alloy for strength and effortless forming
5/16 in. diameter tubing for automotive hardline applications
DOT approved for hydraulic brake system use
Excellent corrosion resistance for long service life
Can be polished to a shiny copper finish
25 ft. length ideal for complete vehicle plumbing projects
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
