Marsram Ignition Coil Pack for Honda 2.4L — 4-Pack UF311 with Double-Iridium Spark Plugs, Direct-Fit

If your 2002–2011 Honda or Acura with a 2.4L inline-4 is showing rough idling, misfires, or diminished throttle response, this Marsram kit provides four ignition coils and four premium spark plugs engineered to meet or exceed OEM fit and function. The set replaces several common part numbers (UF311, UF583, 30520PNA007, 30520RRA007 and others) and is built with heat-resistant materials and high-conductivity copper windings to improve spark consistency and durability.

Which models is this Marsram kit compatible with?

This kit is designed for a wide range of Honda and select Acura models equipped with 2.4L or 2.0L L4 engines. Verify vehicle fitment against your VIN or the included compatibility list before purchase to ensure correct application.

• Honda Accord: 2003–2007 (various trims including DX, EX, LX, SE, EX-L, Special Edition)
• Honda CR-V: 2002–2009 (LX/EX, SE trims; also EX-L 2007–2009)
• Honda Element: 2003–2011 (DX/LX/EX and SC variants)
• Other: 2002–2005 Civic Si 2.0L and Acura RSX 2002–2006 (base 2.0L)

How do these ignition coils and spark plugs improve engine performance?

Marsram coils use epoxy and reinforced engineering plastic to resist heat distortion, while copper windings increase conductivity for faster, more consistent ignition. The double-iridium spark plugs feature corrosion-resistant electrodes that preserve the spark gap and promote efficient combustion over a longer service life.

• Heat-resistant coil housings reduce failure from engine bay temperatures
• Copper internal windings improve voltage transfer and spark reliability
• Double-iridium plug tips maintain precise spark gaps for better combustion
• Corrosion-resistant electrodes limit wear and maintain performance

Is installation straightforward and what does the package include?

The kit is made to match OE dimensions so installation is typically plug-and-play for someone with basic automotive tools and experience. Each package contains four ignition coils and four spark plugs, and fits like the original units for a simple swap without modification.

• Includes 4 Marsram ignition coils and 4 double-iridium spark plugs
• Meets or exceeds OE design and performance standards
• Direct-fit replacements for listed OEM part numbers (refer to fit guide)
• Backed by a 1-year aftermarket warranty and customer support

What should I check before ordering and how long can I expect them to last?

Confirm vehicle compatibility via your VIN or the seller’s fitment checker to prevent returns. While service life depends on driving conditions and maintenance, the rugged materials and iridium plugs are chosen for longer-lasting, stable ignition compared with older or worn stock components.

• Always verify compatibility using the vehicle fit tool or part numbers
• Iridium plugs typically outlast copper or standard nickel plugs
• Coil lifespan depends on heat exposure, oil leaks, and electrical stress
• Manufacturer offers a 1-year warranty for peace of mind

Who is this for: This Marsram UF311 coil-and-plug kit is aimed at DIY mechanics and professional technicians maintaining mid-2000s Honda/Acura 2.4L L4 engines who want a dependable, OEM-compatible ignition refresh. It’s suitable for owners addressing misfires, rough idle, or wanting to restore throttle responsiveness without sourcing individual parts.