A-NAFTULY Iridium Spark Plugs 6-Pack for V6 Engines — TR55IX/7164 Direct Replacement, Long-Life Iridium Tips

A-NAFTULY Iridium Spark Plugs 6-pack (TR55IX / 7164) are high-durability replacement ignition plugs designed to restore reliable spark and consistent combustion for many GM and Ford V6 engines from the late 1980s through the 2010s.

These iridium-tipped plugs are engineered as a direct-replacement option for vehicles originally equipped with similar OE part numbers (7164, TR55IX, 3403, TR55GP, 3951, TR55). They combine a fine-tipped iridium electrode with rugged construction to maintain stable firing across a wide range of temperatures and driving conditions. This listing contains six plugs—sufficient for V6 cylinders—and includes a 12-month limited warranty and customer support from A-NAFTULY.

Which vehicles will these spark plugs fit?

These plugs are intended for many V6 engines across Chevrolet, GMC, Ford, Buick, Pontiac and related models spanning the 1990s through early 2010s. Fitment covers common models such as Chevy Silverado, Camaro, Malibu, Impala, and Express, plus Ford Explorer, Mustang, Escape, and several Buick and Pontiac series. Always verify your engine code and OE part number before purchase to ensure correct fitment.

• Compatible reference numbers: 7164, TR55IX, 3403, TR55GP, 3951, TR55
• Chevrolet & GMC V6 models (4.3L, 3.8L, 3.4L, 3.1L, 3.5L) across 1994–2014 model years
• Ford V6 applications such as 3.0L, 3.8L, 4.0L and 4.2L engines from the 1990s–2000s
• Buick and Pontiac V6 family engines including LeSabre, Century, Regal and Bonneville

How do iridium tips affect ignition and longevity?

Iridium electrodes are much harder and finer than conventional copper tips, which produces a more concentrated spark and reduces required voltage. The fine center electrode helps deliver a stable, efficient spark and slows electrode erosion, translating into longer service life and more consistent performance between changes.

• Fine iridium center for focused, reliable spark
• Greater wear resistance versus standard copper plugs
• Reduced misfires and steadier combustion over time

What should I expect when installing these plugs?

Installation follows standard spark plug procedures: remove old plugs, check and gap new plugs if necessary, and torque to the vehicle manufacturer’s specification. For engines sensitive to plug torque or gap values, refer to the factory manual or a trusted mechanic. These plugs are sold in a set of six, ideal for most V6 engines that require full-bank replacement.

• Sold as a 6-pack—one plug per cylinder for V6 engines
• Verify gap and torque specifications before final installation
• Use anti-seize or thread lubricant only if recommended by your vehicle guide

What warranty and support does A-NAFTULY provide?

A-NAFTULY includes a 12-month limited warranty and prompt customer support for product issues. If a plug is found defective within the warranty period, contact the store for troubleshooting and replacement guidance. Keep your order information handy when reaching out to expedite assistance.

• One-year limited warranty from purchase date
• Customer support available for fitment and installation questions
• Return or replacement handled according to store policy

Who is this for: Drivers or repair professionals who need a reliable, cost-effective replacement spark plug set for older V6 GM and Ford vehicles. These iridium plugs are especially useful when restoring engine responsiveness and fuel burn consistency in vehicles that require the TR55IX/7164 family of plugs. Ideal for routine maintenance shops, DIY mechanics, and fleet managers maintaining legacy V6 engines.