Ignition Coil and Iridium Spark Plugs for Honda Civic (2006-2011) 1.8L
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High-Energy Ignition Coil and Iridium Spark Plugs for 2006-2011 Honda Civic
What it Does: Replaces failing factory coils and worn spark plugs to restore optimal combustion, eliminate misfires, and stabilize idle in the R18A1 engine.
The Stock Civic Ignition Degradation
Over thousands of thermal cycles, factory ignition coils on the 1.8L suffer from internal epoxy breakdown and winding resistance drift. As the engine bay heat soaks, the dielectric materials within the OEM coils degrade, causing voltage leaks and weak spark delivery. Simultaneously, standard spark plug electrodes erode, increasing the gap and demanding exponentially higher firing voltages. This compounding electrical strain results in sluggish throttle response, rough idling, P0300-series misfire codes, and diminished fuel economy—especially noticeable under heavy engine load or during cold starts.
The Engineering Solution
This comprehensive ignition kit directly resolves R18 spark degradation by pairing precision-wound replacement coils with high-grade iridium spark plugs. The upgraded ignition coils feature advanced copper windings and robust high-dielectric epoxy resin, ensuring consistent secondary voltage output and superior thermal resistance against engine heat. Paired with iridium-tipped spark plugs—which boast an ultra-fine center electrode and significantly higher melting point than traditional metals—this combination guarantees a highly concentrated spark. The result is complete volumetric combustion, immediate throttle input response, restored factory output, and long-term durability without the risk of premature electrode wear.
Technical Specifications
| Fitment | 2006-2011 Honda Civic 1.8L |
| Engine / Chassis | R18A1 / FA1, FG1 |
| Stock Output | 140 hp / 128 lb-ft (Approx) |
| Part Number | UF582 / 30520-RNA-A01 |
Compatibility
- 2006 Honda Civic 1.8L
- 2007 Honda Civic 1.8L
- 2008 Honda Civic 1.8L
- 2009 Honda Civic 1.8L
- 2010 Honda Civic 1.8L
- 2011 Honda Civic 1.8L
The Honda Reliability Standard
Engineered to meet the exact tolerances of Honda's i-VTEC architecture, this tune-up kit ensures smooth power delivery, peak fuel efficiency, and dependable daily drivability without triggering persistent check engine lights.
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