A-Premium Iridium Platinum Spark Plugs 6-Pack — Direct-Replace for 3.1L–4.3L V6, OEM Heat Range

A-Premium 6PCS Iridium Platinum spark plugs deliver a long-lasting, direct-replacement ignition option engineered for a wide range of Buick, Chevrolet, Ford, GMC and Mazda V6 engines from 1988–2008.

This six-pack of iridium-platinum spark plugs from A-Premium is designed as a straightforward replacement for original equipment on many 3.1L–4.3L V6 engines. Built to match OEM heat range and electrode geometry, these plugs are intended to restore consistent spark performance, help maintain efficient combustion and simplify routine tune-ups. Each kit includes six matched plugs and fits numerous models such as Regal, Equinox, Impala, Ranger, Sierra, Tribute and more.

Which vehicles and engine sizes do these A-Premium spark plugs fit?

These plugs cover an extensive set of domestic and import V6 applications across model years 1988 through 2008. Fitment includes common Chevrolet, GMC, Buick, Ford and Mazda models with 3.0L to 4.3L V6 engines; check your engine code and OEM reference numbers to confirm compatibility.

• Chevrolet: Astro, Blazer, Camaro, Impala, Malibu, Monte Carlo, Express, Silverado, C1500
• GMC: Sierra, Jimmy, Sonoma, C1500
• Buick/Olds: Regal, LeSabre, Century, LaCrosse, Riviera, Lucerne, Park Avenue, Aurora
• Ford/Mercury/Lincoln/Mazda: Ranger, Explorer, F-150, Mustang, Taurus, Escape, Tribute, Lincoln LS

How do iridium and platinum materials affect spark plug life and performance?

Iridium and platinum are used on the center and ground electrodes to reduce wear and sustain a sharp spark gap longer than standard nickel plugs. The harder, higher-melting-point metals resist electrode erosion, which helps preserve ignition consistency and reliable starting over many miles.

• Iridium center electrode for a focused, stable spark
• Platinum ground electrode for slower erosion and extended gap life
• Manufactured to OEM-style dimensions for correct heat range and firing

What should I expect during installation and maintenance?

Installation is straightforward for anyone with basic hand tools and a torque wrench; these are direct-fit replacements matching common reference numbers like 7164, TR55IX, XP605 and more. Always replace plugs in sets, inspect plug tubes and ignition components, and torque to the vehicle manufacturer’s specification to prevent damage.

• Direct-replacement thread size and reach for listed engines
• Torque to OEM spec and use anti-seize only if recommended by vehicle manufacturer
• Replace all six plugs at the same interval for even performance

Will they help with rough idle or fuel economy improvements?

New, properly gapped spark plugs often restore smoother idling and more complete combustion versus worn plugs, which can indirectly support steady fuel use. While no plug guarantees specific MPG gains, replacing degraded plugs removes a common ignition-related cause of misfires and inefficiency.

• Restores consistent ignition timing across cylinders
• Reduces misfire risk when plugs were previously worn or fouled
• Supports overall engine responsiveness and steady idle

Who is this for? The A-Premium 6PCS Iridium Platinum spark plug kit is aimed at DIY mechanics, independent repair shops and vehicle owners who need a cost-effective, OEM-style replacement for older V6 engines from the late 1980s through the 2000s. If you own any of the listed Buick, Chevrolet, GMC, Ford, Mazda or related vehicles and want a long-lasting plug that matches common OE reference numbers, this set provides a matched six-pack for routine maintenance or tune-up projects.