Motorcraft SP580 / SP580X Iridium Spark Plugs – Set of 6

Motorcraft iridium spark plugs, part number SP580 (superseded by SP580X). These are OEM Ford spark plugs designed for optimal performance in select Ford and Lincoln vehicles.

Key Features:

• Iridium center electrode tip for superior spark efficiency and long service life
• Proprietary platinum pad on the side (ground) electrode
• Nickel-plated shell for excellent corrosion resistance
• Built-in resistor to reduce radio frequency interference
• Meets or exceeds Ford performance, durability, and emission standards

Perfect for many 3.5L EcoBoost V6 engines found in:

• Ford F-150 (2011–2016)
• Ford Explorer, Flex, Taurus
• Ford Expedition, Transit
• Lincoln MKS, MKT, and more

Important Installation Notes:

• Always check and adjust the gap before installing (pre-gap is approximately 0.031"–0.035"; refer to your vehicle’s service manual for the exact specification).
• Professional installation recommended.

This is a complete set of 6 spark plugs — enough for a full V6 engine replacement.

Note: SP580/SP580X is part of Ford’s spark plug supersession chain and can interchange with earlier SP534 and later SP594 in many applications. For the most accurate fitment, always verify with your vehicle’s VIN.