Bosch spark plug 9614 OE Double Iridium Pack of 4 — OE-matched, Pre-gapped, Long Life

BOSCH 9614 OE Fine Wire Double Iridium Spark Plugs are high-performance, OE-matched spark plugs designed for modern gasoline engines that deliver longer service life and reliable ignitability.

These spark plugs combine an ultra-fine iridium center electrode and an iridium ground-electrode inlay to improve ignition consistency while resisting wear. Engineered to meet original-equipment specifications, they arrive pre-gapped and ready to install, and their corrosion-resistant nickel-plated rolled threads simplify both installation and removal. They are compatible with many late-model gasoline engines including GDI systems; always confirm specific fitment for your vehicle before purchase.

How do these spark plugs improve ignition performance?

The ultra-fine iridium center electrode reduces the energy needed to create a spark, improving ignitability across a range of operating conditions. A laser-welded tapered ground electrode further concentrates the spark and supports consistent combustion cycle after cycle.

• 360-degree laser-welded ultra-fine iridium firing pin for lower voltage requirements.
• Iridium ground-electrode inlay for stable spark positioning and longevity.
• Optimized spark gap design for efficient combustion and throttle response.

Will these plugs fit my modern GDI or gasoline engine?

Bosch designed these plugs to match OE spark position and specifications used in many Gasoline Direct Injection (GDI) and other contemporary gasoline engines. Fitment depends on engine model and year, so check the vehicle fitment tool or manufacturer vehicle guide before committing.

• OE-matched spark position for compatibility with GDI systems.
• Meets or exceeds manufacturer design requirements for fit, form, and function.
• Compatible with many Acura and Honda models; verify engine-specific fitment.

How do these spark plugs reduce maintenance hassle?

Each plug is factory pre-gapped, so you can install them right out of the box without additional adjustment. Nickel-plated rolled threads resist corrosion and reduce the chance of galling, meaning easier future removal and no need for anti-seize compound during installation.

• Factory pre-gapped—no gap adjustment required before install.
• Nickel-plated rolled threads improve corrosion resistance and removal.
• No anti-seize needed, saving time and preventing over-torqueing errors.

How long can I expect these spark plugs to last compared to standard plugs?

The double iridium construction delivers substantially longer service life than conventional copper plugs by resisting electrode wear and maintaining a stable gap. While operating conditions and driving habits influence lifespan, Bosch engineers design these plugs to provide up to four times the life of typical copper alternatives under normal use.

• Double iridium electrodes resist erosion for extended service intervals.
• Stable spark gap retention supports consistent ignition over time.
• Durable construction tailored for modern engine demands.

Who is this for: These BOSCH 9614 OE Fine Wire Double Iridium Spark Plugs are aimed at drivers and technicians who want OEM-level fit and dependable long-term performance—especially owners of late-model gasoline and GDI-equipped vehicles seeking reduced maintenance frequency and consistent ignition. They are a suitable upgrade for routine tune-ups, performance-minded replacements, or when restoring ignition reliability in vehicles where OE-equivalent spark plugs are required.