A-NAFTULY Iridium Spark Plugs 4-Pack ILTR5E11 (91418) for Chevy Pontiac Saturn — 0.6mm Fine-Wire, Laser-Welded Durability

A-NAFTULY Iridium Spark Plugs 4 Pack (91418 / ILTR5E11) are high-durability replacement plugs engineered to restore consistent ignition and efficient combustion for compatible Chevy, Pontiac, Saturn and select GMC/Isuzu engines from 2006–2012.

These four iridium-tipped plugs replace factory units with a 0.6 mm fine-wire center electrode and laser-welded construction designed for long life and steady spark performance. Built from an iridium alloy with superior heat resistance, they suit many 4-cylinder engines across Chevrolet Cobalt, Malibu, HHR, Colorado, Pontiac G6/G5, Solstice, Saturn models and several GMC and Isuzu variants. Each set includes four plugs and A-NAFTULY provides a 12-month limited warranty and customer support.

Will these spark plugs fit my vehicle?

Compatibility is based on engine type and model year. These plugs match numerous 4-cylinder Chevrolet, Pontiac, Saturn, GMC and Isuzu applications produced between 2002 and 2012 — primarily 2.2L, 2.4L, 2.8L and 2.9L engines. Always verify part numbers and engine code before purchase.

• Reference numbers: 91418, ILTR5E11 and equivalents (12598004, 41-114, 12622441, others)
• Common Chevy fits: Cobalt, HHR, Malibu, Colorado (various years and displacements)
• Common Pontiac fits: G6, G5, Grand Am, Solstice
• Common Saturn/GMC/Isuzu: Aura, Ion, Vue, Sky, Canyon, Isuzu i-280/i-290

How do these iridium plugs affect fuel efficiency and performance?

The combination of a fine 0.6 mm iridium center electrode and precision laser welding produces a concentrated, reliable spark that promotes more complete combustion. That can reduce misfires and improve throttle response under normal driving conditions, helping your engine run more efficiently.

• Fine-wire tip delivers precise ignition timing and cleaner burns
• Laser-welded construction ensures consistent spark under load
• Durable iridium alloy resists erosion for extended service life

What makes iridium plugs different from standard or platinum plugs?

Iridium is harder and has a higher melting point than platinum, improving resistance to heat and electrical wear. That means iridium electrodes maintain their sharpness longer, which helps sustain reliable spark gaps and longer replacement intervals compared with conventional plugs.

• Iridium center electrode is significantly harder than platinum
• Higher melting point reduces electrode wear at high temperatures
• Designed for modern high-compression and high-efficiency engines

How easy is installation and what does the package include?

Installation follows the same steps as any standard spark plug replacement: remove ignition coils or wires, extract old plugs, gap verification, and torque new plugs to factory specs. The set contains four prepped iridium plugs and A-NAFTULY offers a 12-month warranty to address defects or compatibility questions.

• Package: set of 4 iridium spark plugs (91418 / ILTR5E11)
• Follow factory torque and gap specifications during installation
• 12-month limited warranty and responsive A-NAFTULY support

Who is this for: This four-pack is aimed at do-it-yourselfers and professional mechanics replacing worn ignition components on compatible mid-2000s GM and related vehicles. Choose these plugs if you want a long-lasting, high-temperature-resistant electrode designed to maintain a stable spark and support reliable engine operation across common 2.2–2.9L four-cylinder applications.