Ignition Coil Spark Plugs for Honda Ridgeline (2006-2008) 3.5L

Direct-Fit Ignition Coil & Iridium Spark Plug Kit for 2006-2008 Honda Ridgeline (YK1)

What it Does: The complete ignition coil and iridium spark plug kit replaces aged factory ignition components on the 2006-2008 Honda Ridgeline to eliminate engine misfires, stabilize idle quality, and restore peak combustion efficiency.

The Stock Honda Ridgeline Ignition System Breakdown

Under repeated thermal cycling and prolonged duty cycles, the factory coil-on-plug (COP) units on the transverse J35A9 engine suffer from dielectric breakdown in the internal copper windings and potting epoxy. Concurrently, standard spark plug electrodes erode, expanding the plug gap and escalating the required secondary firing voltage. This thermal degradation forces the ignition coils to overwork, resulting in weak spark energy, unburned hydrocarbons, sluggish throttle transition, and recurring misfire DTC codes P0300 through P0306 under heavy engine load or towing conditions.

The Engineering Solution

This comprehensive tune-up kit restores primary and secondary ignition integrity across all six cylinders. The replacement COP modules utilize high-grade, vacuum-impregnated epoxy resin encapsulation to resist micro-arcing and moisture intrusion, paired with high-temperature silicone boots that isolate the secondary conductor from engine heat soak. Engineered to factory dwell times, the coils pair seamlessly with fine-wire iridium spark plugs. The ultra-dense iridium center electrode requires lower ionization voltage while withstanding spark erosion, ensuring precise flame kernel growth and consistent combustion stability under demanding load.

What's Included

• 6x Black Coil-on-Plug Ignition Coils (3-Pin Connector)
• 6x Fine-Wire Iridium Spark Plugs

Technical Specifications

Compatibility

• 2006 Honda Ridgeline RT, RTS, RTL (3.5L V6 J35A9)
• 2007 Honda Ridgeline RT, RTS, RTL, RTX (3.5L V6 J35A9)
• 2008 Honda Ridgeline RT, RTS, RTL, RTX (3.5L V6 J35A9)

Frequently Asked Questions & Fitment Warnings

Does this fit the YK1 Ridgeline?

Yes, this is a direct bolt-on replacement for all 2006-2008 Honda Ridgeline YK1 models equipped with the 3.5L J35A9 V6 engine.

Should dielectric grease be used during installation?

Applying a thin film of dielectric grease inside the base of each silicone boot prevents moisture ingress and flashover while facilitating smooth future boot removal.

The Honda Workhorse Standard

Maintain the rugged towing capacity and payload reliability of your unibody pickup with an ignition service that provides consistent spark delivery under heavy throttle and sustained grades.