A-Premium Iridium Platinum Spark Plugs Pack of 6 — Fine-Wire, Direct-Fit for V6 Engines

These A-Premium iridium-platinum fine-wire spark plugs (pack of 6) are engineered to provide reliable ignition, extended service life, and consistent performance for many V6 Ford, Lincoln, Mazda and Land Rover engines.

Designed as a direct-fit replacement for a range of V6 applications, this six-pack combines an iridium center tip with a platinum core for precise spark delivery and improved durability over conventional plugs. The fine-wire electrode and specified 0.055–0.059 inch gap support efficient combustion while the 14 mm thread and 17.98 mm reach match the factory dimensions for the listed engines. Below you'll find concise answers to common buyer questions about fit, performance, installation details, and suitability.

Will these spark plugs fit my V6 vehicle?

Yes—these plugs are intended as direct-fit replacements for many Ford-family V6 engines and several other makes. They match common OE thread size, reach and hex dimensions used across the listed model years and engine displacements.

• Thread diameter: 14 mm, reach: 17.98 mm, hex size: 5/8 inch.
• Common fitments include F‑150, E‑150/E‑250 Econoline, Explorer, Mustang, Ranger, Taurus and more.
• Also suitable for select Land Rover LR3, Mazda B4000, Lincoln and Mercury V6 engines shown in fitment lists.

How do iridium and platinum materials affect performance?

Combining an iridium tip with a platinum core creates a durable electrode that maintains a sharp spark gap longer than standard nickel plugs. This pairing improves ignition stability under varied loads without making any specific fuel-economy or emissions claims.

• Iridium tip—very hard and wear resistant for consistent sparks over time.
• Platinum core—supports longevity and helps stabilize the center electrode.
• Fine-wire design—reduces quenching and promotes efficient flame transfer.

What installation and gap details should I know?

The plugs come pre-set within the recommended gap range and use a standard 5/8-inch hex for socket installation. Follow torque specs and thread preparation practices for your engine to ensure proper sealing and long service life.

• Pre-set gap: 0.055–0.059 inches (verify before installation).
• Resistance: 5000 ohms—compatible with most electronic ignition systems.
• Insulator height: 53 mm—confirm clearance with coil-on-plug or booted systems.

How often should I replace these platinum-iridium plugs?

Platinum and iridium spark plugs are built for extended intervals compared with conventional designs. Typical recommended service intervals for this material combination are long, but always reference the vehicle manufacturer's guidance.

• Suggested replacement window: approximately 80,000 to 100,000 miles under normal driving conditions.
• Inspect earlier if the engine shows misfires, rough idle, or increased fuel consumption.
• Use correct torque and anti-seize practices when installing to avoid damage.

Who is this for: Automotive owners and technicians seeking a direct-fit, long-life spark plug solution for older and mid-2000s V6 engines—especially Ford platform vehicles and compatible models from Mazda, Lincoln, Mercury, and Land Rover. This pack of six suits V6 engines requiring 14 mm threads, a 17.98 mm reach and the listed gap size, and is appropriate for those who favor longer service intervals and reliable ignition performance without modifying ignition systems.