Ignition Coil and Iridium Spark Plugs for Nissan Sentra (2009-2012) 2.0L

Direct-Fit Ignition Service Kit for 2009-2012 Nissan Sentra

Primary Function: Delivers complete secondary ignition restoration for the 2.0L inline-4 powertrain, eliminating misfires, rough idle, and unburned fuel cycle losses.

The Stock Sentra Ignition Degradation

Factory coil packs on the B16 chassis face chronic dielectric breakdown due to intense thermal cycling within the tight MR20DE cylinder head spark plug wells. Over time, internal epoxy insulation hardens and develops micro-fractures, while primary and secondary copper windings increase in internal resistance. Concurrently, standard electrode erosion on aging plugs expands the gap clearance, driving up required firing voltage and precipitating spark blow-out, severe cold-start hesitation, and intermittent P0300-P0304 fault codes.

The Engineering Solution

This comprehensive tune-up kit restores high-voltage energy transfer via four reinforced coil-on-plug units wound with high-conductivity oxygen-free copper and insulated with high-dielectric epoxy resin. Matched with four fine-wire iridium spark plugs, the assembly withstands high thermal loads and resists arc-over. The reduced electrode surface area requires lower breakdown voltage, ensuring a stable, localized flame kernel under all throttle transitions.

Technical Specifications

Compatibility

• 2009-2012 Nissan Sentra Base (2.0L L4 MR20DE)
• 2009-2012 Nissan Sentra S (2.0L L4 MR20DE)
• 2009-2012 Nissan Sentra SL (2.0L L4 MR20DE)
• 2009-2012 Nissan Sentra SR (2.0L L4 MR20DE)

The Nissan Precision Standard

Engineered to exact OEM operational tolerances, this kit restores clean throttle response, factory fuel economy, and crisp combustion stability across the entire RPM band without triggering false diagnostic trouble codes.