A-Premium Iridium Platinum Spark Plugs for 3.5L V6 — Pack of 6, Fine-Wire Long-Life Performance

A-Premium Iridium Platinum Spark Plugs (pack of 6) are high-performance fine-wire ignition electrodes built for 3.5L V6 engines to deliver consistent spark, long service life, and OEM-compatible fitment.

These spark plugs combine an iridium-tipped center electrode with a platinum core to balance sharp ignitability and extended durability. Engineered to match OEM specifications, the set includes six plugs designed for a range of 3.5L V6 vehicles—offering the reach, thread diameter, and hex size needed for direct replacement. The design focuses on reliable starts, stable combustion, and predictable longevity when installed and gapped to the recommended specification.

Which vehicles and part numbers do these plugs replace?

These A-Premium spark plugs are manufactured to fit several factory references and common applications for 3.5L V6 engines. They are compatible with specific Acura, Honda, Ridgeline, and Saturn Vue models from the mid-2000s era and match multiple OEM reference codes.

• Reference fits: 3657, IZFR5K-11, IZFR5K11, 9807B5517W, 9807B5517WA0, XP5224.
• Vehicle fitment: Acura MDX 2003–2006 V6 3.5L, Honda Odyssey 2005–2010 V6 3.5L, Pilot 2006–2008 V6 3.5L, Ridgeline 2006–2008 V6 3.5L, Saturn Vue 2004–2007 V6 3.5L.
• Designed to meet OEM geometry and thread specifications for straightforward replacement.

How does the iridium-platinum construction affect performance?

The center electrode uses iridium for a fine, wear-resistant tip while the core and additional electrode materials include platinum for stable thermal properties. This combination improves spark precision and resists electrode erosion, helping maintain consistent combustion over long intervals.

• Iridium tip for sharp, reliable spark and minimized misfires.
• Platinum core to enhance durability under heat and load.
• Fine-wire electrode geometry improves ignitability and fuel burn efficiency.

What are the key specifications I need to know before installing?

These plugs are made to specific dimensional and electrical standards so they fit and function like the originals. Confirm thread size, reach, hex size, and factory gap before installation to ensure safe, correct service.

• Resistance: 5000 ohms for stable ignition control module compatibility.
• Gap: 0.044 inches — preset but should be checked during install.
• Hex size: 5/8 inch; Thread diameter: 14 mm; Reach: 19.05 mm; Insulator height: 50.05 mm.

When should these plugs be replaced and what maintenance helps them last?

Iridium-platinum plugs are built for extended intervals compared with standard plugs, but longevity depends on driving conditions and maintenance. For consistent performance, follow the vehicle manufacturer’s service recommendations and inspect plugs anytime ignition or starting issues arise.

• Recommended replacement interval: approximately 80,000–100,000 miles under normal use.
• Check gap and look for deposits or electrode wear during routine tune-ups.
• Use correct torque and anti-seize practices to avoid damage on installation.

Who is this for: The A-Premium Iridium Platinum Spark Plugs pack of six is ideal for DIY mechanics, professional technicians, and owners of compatible 3.5L V6 vehicles seeking an OEM-style replacement with extended service life. Choose this set if you want fine-wire iridium ignitability combined with platinum durability, accurate fit to the listed reference numbers, and parts designed for long mileage intervals when properly installed and maintained.