Ignition Coil and Iridium Spark Plugs for Acura TLX (2015-2020) 3.5L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2015-2020 Acura TLX

What it Does: The Ignition Coil and Iridium Spark Plug Kit replaces worn ignition components on the 2015-2020 Acura TLX 3.5L to eliminate cylinder misfires and restore factory combustion efficiency.

The Stock Acura TLX Ignition Coil Degradation and Spark Erosion

The factory ignition system on the J35Y6 direct-injected V6 faces severe heat cycling, particularly across the rear cylinder bank tucked against the firewall. Over time, high underhood temperatures degrade the internal epoxy potting and secondary windings inside the factory pencil coils, causing high-voltage breakdown and intermittent spark delivery. In tandem, factory electrode erosion widens plug gaps against the high 11.5:1 compression ratio, straining the ignition circuit and precipitating hesitation, rough idling, and recurring P0300 through P0306 diagnostic trouble codes.

The Engineering Solution

This direct-fit tune-up kit resolves electrical drop-off by pairing heavy-duty pencil coils with high-durability iridium spark plugs. The replacement ignition coils feature heat-stabilized thermoplastic housings, high-dielectric epoxy potting, and reinforced copper windings capable of sustaining high secondary voltage under heavy load. The matching iridium spark plugs utilize laser-welded fine-wire center electrodes and platinum-tipped ground electrodes to reduce required firing voltage, ensure immediate flame-kernel initiation, and resist gap degradation under rigorous thermal stress.

Technical Specifications

Compatibility

• 2015-2020 Acura TLX 3.5L V6 Base (FWD)
• 2015-2020 Acura TLX 3.5L V6 SH-AWD
• 2018-2020 Acura TLX 3.5L V6 A-Spec (FWD & SH-AWD)
• 2015-2020 Acura TLX 3.5L V6 Technology Package
• 2015-2020 Acura TLX 3.5L V6 Advance Package

Frequently Asked Questions

Does this fit the UB2 / UB3 TLX?
Yes, this is a direct fit for the 2015-2020 Acura TLX equipped with the J35Y6 engine.

Are the spark plugs pre-gapped for the direct-injected 3.5L?
Yes, the included iridium spark plugs arrive pre-gapped to Acura factory specifications for direct drop-in installation.

The Acura Performance Standard

High-compression V6 powerplants require unwavering ignition precision to sustain sharp throttle response and clean high-RPM operation without misfire under peak cylinder pressures.