4056 Spark Plug 4056/4 Copper
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4056 Spark Plug 4056/4 Copper
Enhance your engine's performance with the 4056 Spark Plug 4056/4 Copper, expertly engineered for reliability and efficiency. This spark plug is designed to deliver optimal ignition and ensure your engine runs smoothly under various conditions.
Key Features:
- Copper-Glass Seal: The advanced copper-glass seal bonds the insulator and terminal post center electrode, guaranteeing that the required voltage flows flawlessly at the spark gap.
- Gas-Tight Seal: Enjoy peace of mind with a 100% leak-proof design that prevents gas leakage, enhancing the overall performance of your engine.
- Multi-Rib Insulator: The innovative multi-rib insulator minimizes the risk of “flash-over,” ensuring consistent performance even in challenging environments.
- One-Piece Terminal Post: This feature adds significant strength and durability, making it ideal for high-performance applications.
- Resistor Technology: The built-in resistor effectively reduces radio frequency interference (RFI) and electrode erosion, leading to a longer lifespan and better performance.
- Cold-Formed Steel Shell: With precision rolled threads, the cold-formed steel shell enhances durability and makes installation easier.
- Full Copper Core Electrode: The full copper core provides superior performance across all conditions, ensuring reliable ignition every time.
Note: Be sure to verify all cross-reference listings before making your purchase to ensure compatibility with your vehicle.
Shipping & Returns
Shipping & Returns
Shipping:
Most qualifying in-stock orders are processed within one business day. In the contiguous 48 states, eligible in-stock orders placed before 12:00 PM (noon) in the customer's local time zone typically ship the same business day. Orders shipping to Alaska or Hawaii use a 12:00 PM Pacific Time cutoff (California time). These cutoffs apply only to eligible in-stock orders and are not guaranteed shipping or delivery times. Same-day shipping refers to processing and carrier handoff, not delivery. Weekends and holidays are excluded.
Payment verification, address verification, fraud review, and inventory availability may take longer. Supplier-direct fulfillment, freight shipping, and special handling may also take longer.
Returns:
Eligible products may be returned within 60 days of delivery, subject to our Return Policy. Return authorization is required. Certain products are final sale or subject to manufacturer warranty procedures, shipping charges, and applicable restocking fees.
Please inspect your order promptly upon delivery. Shipping damage, incorrect items, missing components, or quantity shortages must be reported within 3 business days after delivery. Retain the product, original packaging, shipping labels, and photographs while your claim is reviewed.

