A-Premium Iridium Platinum Spark Plugs for L4 Engines — Pack of 4, Fine-Wire, Long-Life

A-Premium Iridium Platinum Spark Plugs are a four-pack of fine-wire, long-life spark plugs engineered for L4 engines, combining an iridium tip with a platinum core for reliable ignition and extended service intervals.

These spark plugs are designed specifically to replace OE-style plugs on a range of Honda and Acura L4 engines, including Civic, Integra, RSX, CSX Type S, and S2000 models. Built with a 0.044-inch gap, a 5,000-ohm resistor, a 14.00 mm thread diameter and a 19.05 mm reach, they match fitments listed by part references such as BKR7EIX-11, XP3922, and XS3922. The center electrode uses iridium for precise spark delivery while the core is platinum for durability, making this pack suitable for drivers seeking consistent combustion and long service life.

How do these plugs affect starting reliability and throttle response?

The fine-wire iridium tip produces a concentrated, consistent spark that helps engines ignite the air-fuel mixture more cleanly. That sharper spark can reduce misfires and improve throttle consistency under varied driving conditions. These plugs are particularly effective where precise ignition timing matters, such as higher-revving L4 sport engines.

• Iridium center tip for a focused spark and steady ignition
• 5000-ohm resistor reduces electrical interference
• Factory-style 0.044" gap preserves original ignition characteristics
• Designed reach (19.05 mm) ensures correct combustion chamber placement

Will these fit my Honda or Acura L4 engine?

Compatibility covers multiple L4 applications — check engine codes and gap specifications before purchase. Common compatible vehicles include Acura Integra (2001 B18C5), RSX (2002–2006 K20A series), CSX Type S (2007–2010 K20Z3), and a broad range of Honda Civic and S2000 years noted by the manufacturer. Always verify with your vehicle’s service manual or parts list.

• Confirmed fit references: BKR7EIX-11, XP3922, XS3922 and related OEM numbers
• Listed vehicle matches include Civic, Integra, RSX, CSX, S2000
• Standard gap set at 0.044 inch for the specified engines
• Thread diameter 14.00 mm and hex size 5/8 inch for correct installation

How long do A-Premium Iridium Platinum plugs last and when should I replace them?

These plugs combine iridium and platinum to extend service life beyond conventional copper plugs. The manufacturer recommends replacement around 80,000–100,000 miles under normal driving conditions, though driving style and engine tune can affect lifespan. Regular inspection during tune-ups helps ensure optimal performance.

• Recommended replacement interval: 80,000–100,000 miles
• Durable materials reduce electrode wear over long intervals
• Inspect for fouling or abnormal wear at routine maintenance
• Resistor (5000 ohms) preserves electronics and ignition coil health

What installation details and measurements should I be aware of?

Installation is straightforward for mechanically experienced owners or technicians, but proper torque and anti-seize procedures are important. These plugs have a reach of 19.05 mm and an insulator height of 50.50 mm; use a 5/8-inch socket and torque to the vehicle maker’s specification to avoid damage. Confirm the 0.044-inch gap if your application requires it before final tightening.

• Hex size: 5/8 inch — use the correct socket for installation
• Reach: 19.05 mm and insulator height: 50.50 mm for correct seating
• Pre-set gap: 0.044 inch; verify prior to installation
• Follow vehicle torque specs and anti-seize guidance

Who is this for: A-Premium Iridium Platinum Spark Plugs are intended for owners and technicians of Honda and Acura L4 vehicles who want OE-equivalent form, fit and extended service life. They suit drivers seeking consistent ignition performance for daily driving, spirited street use, or high-revving sport engines where reliable spark and long intervals between changes are priorities.