Ignition Coil and Iridium Spark Plugs for Nissan Altima (2019-2021) 2.5L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2019-2021 Nissan Altima

What it Does: The Ignition Coil and Iridium Spark Plug Kit restores reliable high-voltage spark delivery on the 2019-2021 Nissan Altima to eliminate under-load misfires and stabilize combustion efficiency.

The Stock Nissan Altima Ignition Breakdown

The factory coil-on-plug assemblies in the L34 Altima are vulnerable to dielectric breakdown and thermal fatigue caused by repeated heat cycling in the cylinder head wells. Over time, internal winding insulation degrades, causing secondary voltage leakages, increased internal resistance, and carbon tracking along the rubber boots. When coupled with worn factory plugs, the high cylinder pressures of the direct-injected PR25DD engine can easily cause spark blowout, triggering stumbling idle, delayed throttle response, and diagnostic codes P0300 through P0304.

The Engineering Solution

This direct-replacement ignition kit resolves coil arcing and voltage drops by utilizing reinforced pencil coils constructed with high-dielectric epoxy potting and heat-resistant silicone boots. Internally, precision-wound copper windings deliver consistent secondary energy to fire the included fine-wire iridium spark plugs. The laser-welded iridium center electrodes resist spark erosion and require lower striking voltage under lean or high-load conditions. Designed to exceed OEM interchanges 224485RL0A and UF861, this kit ensures stable flame kernel propagation throughout the entire rev range.

Technical Specifications

Compatibility

• 2019-2021 Nissan Altima S 2.5L FWD / AWD (PR25DD)
• 2019-2021 Nissan Altima SV 2.5L FWD / AWD (PR25DD)
• 2019-2021 Nissan Altima SR 2.5L FWD / AWD (PR25DD)
• 2019-2021 Nissan Altima SL 2.5L FWD / AWD (PR25DD)
• 2019-2021 Nissan Altima Platinum 2.5L FWD / AWD (PR25DD)

Frequently Asked Questions

Does this fit the L34 Altima?
Yes, this is a direct fit for the 2019-2021 Nissan Altima equipped with the PR25DD 2.5L engine.

Are the included iridium spark plugs pre-gapped for this application?
Yes, they come pre-gapped to OEM factory specifications for plug-and-play installation without requiring manual adjustment.

The Nissan Sedan Caliber

Engineered to handle the high compression and thermal demands of Nissan direct-injection powerplants, this matched coil and plug service kit ensures crisp throttle response, clean combustion, and reliable cold-start behavior without check-engine lights.