A-NAFTULY Iridium Spark Plugs 6 Pack for V6 Engines (TR55IX 7164) — Iridium Tips, Long-Life

A-NAFTULY Iridium Spark Plugs 6 Pack (7164 / TR55IX / TR55GP) are precision replacement spark plugs designed to restore reliable ignition, smooth idling, and efficient combustion in many GM and Ford V6 engines from the late 1980s through 2013.

These iridium-tip spark plugs are engineered as direct-fit replacements for numerous Chevrolet, GMC, Ford, Buick, and Pontiac V6 applications. They match common reference numbers (7164, TR55IX, 3403, TR55GP, 3951, TR55) and arrive as a set of six, making them ideal for half-engine or V6 tune-ups. The fine iridium center electrode and robust construction focus on consistent spark performance and long service life compared with standard copper plugs.

Which vehicles will these spark plugs fit?

These plugs are intended for a wide selection of V6 engines across Chevrolet, GMC, Ford, Buick, and Pontiac model years spanning the 1990s through early 2010s. Fitment includes many Silverado, Sierra, Express, Blazer, Camaro, Impala, Malibu, Equinox, Explorer, Mustang, Taurus, Century, LeSabre, Grand Prix, and Bonneville variants. Always cross-check OEM reference numbers and engine codes before purchase.

• Reference numbers: 7164, TR55IX, 3403, TR55GP, 3951, TR55
• Chevy/GMC: Silverado/Sierra, Express, Blazer, Camaro, S10, Equinox, Tahoe-style V6 models
• Ford: Explorer, Escape, Mustang, Ranger, F-150 V6 and several mid-2000s V6 sedans
• Buick/Pontiac: Century, LeSabre, LaCrosse, Grand Prix, Bonneville, G6

How do these iridium plugs improve everyday driving?

Iridium-tipped plugs produce a sharper, more reliable spark than many standard plugs, which helps with smoother starts, steadier idle, and more consistent throttle response. While not a performance modification on its own, their longevity and stable firing characteristics reduce misfires and can support fuel-efficient combustion when paired with proper maintenance.

• Iridium center electrode for improved spark stability
• Durable construction to resist wear and fouling
• Set of six for complete V6 replacements or partial tune-ups
• Compatible with OEM-style installation torque and gaps

What should I check before installing these spark plugs?

Verify your vehicle’s OEM part numbers and engine specification to confirm compatibility; the listed reference numbers and model ranges guide selection but are not a substitute for vehicle-specific checks. Inspect ignition coils, boots, and wiring for wear and replace any damaged components to avoid premature plug failure. Use the correct torque and gap settings according to your vehicle manual to ensure safe, lasting performance.

• Confirm reference numbers and engine code match
• Inspect coils and spark plug wires or boots
• Follow manufacturer torque and gap specifications
• Replace in matched sets when recommended for consistent performance

What’s included and what warranty does A-NAFTULY provide?

This purchase contains a pack of six iridium spark plugs—enough for one V6 cylinder bank or half an engine depending on your service plan. A-NAFTULY supports the product with a 12-month worry-free warranty and customer support to help resolve fitment or performance questions, giving added assurance after purchase.

• Package: set of 6 iridium spark plugs
• Coverage: 12-month warranty from A-NAFTULY
• Support: dedicated customer service for fitment or defect concerns

Who is this for: The A-NAFTULY Iridium Spark Plugs 6 Pack is aimed at DIY mechanics, independent shops, and vehicle owners maintaining or restoring V6 GM and Ford engines from roughly 1988–2013 who want longer-lasting ignition parts than standard plugs. Choose these plugs if you need a direct-fit replacement with durable iridium tips, plan to refresh ignition components during routine maintenance, and want the reassurance of a one-year seller warranty. Always verify compatibility for your exact year, engine size, and OEM part number before ordering.