SYKRSS Iridium Spark Plugs for Ford 3.5L V6 — Model 6509 6-Pack, Iridium Tip & Copper Core

Premium iridium spark plugs engineered to restore reliable ignition and consistent performance for Ford 3.5L V6 engines (6-pack).

These SYKRSS Iridium Spark Plugs model 6509 are built to replace OE units in a variety of Ford vehicles, including Explorer 2011–2020 3.5L V6 applications. Constructed with an iridium tip, copper core and ceramic insulator, the set of six plugs is intended to deliver stable spark delivery, long service life and predictable starting performance. The plug design follows OEM dimensions for a direct fit and simple swap during routine tune-ups.

Which Ford models and engines will this 6509 plug fit?

The SYKRSS 6509 iridium plugs are matched to Ford 3.5L V6 engines and several related platforms. They are compatible with Explorer model years and a broad list of Ford vehicles that share the same ignition specifications.

• Fits Ford Explorer 2011–2020 with 3.5L V6
• Also compatible with many Mustang, Flex, F-150 and Taurus model years that use the same OE part number
• Check your vehicle’s OEM part number (XP5263 / LTR6IX11 / 6509) to confirm fitment

How does an iridium tip benefit engine performance?

Iridium provides a very fine, hard electrode tip that helps concentrate the ignition spark, which can improve combustion consistency and extend service intervals versus conventional plugs. Combined with a copper core for thermal conductivity, these plugs balance ignition precision with heat management.

• Fine iridium tip for focused, reliable spark
• Copper core enhances heat transfer and durability
• Ceramic insulator resists voltage leakage and fouling

What should I expect during installation and service life?

Installation is straightforward when replacing like-for-like OE spark plugs — torque to manufacturer specs and follow a proper gap if required. Iridium plugs typically last longer than standard plugs, reducing how often you need to change them, but actual life depends on driving conditions and engine health.

• Direct OE-style replacement, designed for correct fit and reach
• Reduced replacement frequency compared to copper-only plugs
• Inspect ignition coils and wires during service to ensure optimal performance

How does SYKRSS test and support these spark plugs?

SYKRSS applies quality control checks to ensure each iridium plug meets expected electrical and dimensional standards. The product is supplied in a 6-pack with a manual and backed by a limited customer-care period to address fitment or performance questions.

• Each plug is tested for consistent high-voltage performance
• Packaged as a set of six for complete cylinder coverage on V6 engines
• Includes a manufacturer support channel and 1-year customer assistance

Who is this for: Drivers and independent mechanics who own Ford vehicles with the 3.5L V6 (notably Explorer 2011–2020) and want a durable, OEM-form spark plug upgrade that balances long life with dependable ignition. If you need an exact OE replacement part number (XP5263 / LTR6IX11 / 6509) or a six-pack to service a V6, this SYKRSS kit provides a ready-to-install option designed for routine maintenance and improved ignition reliability.