Ignition Coil and Iridium Spark Plugs for Buick Regal Sportback (2018-2020) 3.6L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2018-2020 Buick Regal Sportback

What it Does: Replaces degraded factory ignition components with high-conductance copper-wound coil packs and fine-wire iridium plugs to restore precise combustion timing and eliminate high-load misfires.

The Stock Regal Sportback Ignition Breakdown

The naturally aspirated direct-injected 3.6L LGX V6 operates under elevated cylinder pressures and thermal cycles within tight engine bay packaging. Over extended mileage, factory coil windings suffer insulation breakdown and dielectric fatigue from heat soak, leading to intermittent secondary voltage dropouts. Simultaneously, factory spark plug gaps erode, increasing electrical resistance, degrading fuel atomization, and causing rough idling, hesitation under wide-open throttle, and unburnt hydrocarbon buildup.

The Engineering Solution

This complete ignition service kit features six direct-mount coil packs engineered with high-grade internal copper windings and heavy-duty magnetic lamination cores for stable, rapid spark saturation. Reinforced thermoplastic housings and high-dielectric silicone boots resist thermal cracking and dielectric arc-through. Paired with fine-wire iridium spark plugs offering high melting points and corrosion resistance, the kit ensures low ignition voltage requirements, consistent flame kernel propagation, and responsive throttle response across the RPM band.

Technical Specifications

Compatibility

• 2018 Buick Regal Sportback (3.6L V6 LGX)
• 2019 Buick Regal Sportback (3.6L V6 LGX)
• 2020 Buick Regal Sportback (3.6L V6 LGX)
• 2018-2020 Buick Regal GS (3.6L V6 LGX)

The Buick Reliability Standard

Engineered to exact OEM interface dimensions, these ignition components provide plug-and-play installation without triggering diagnostic trouble codes or requiring ECU recalibration, ensuring factory-level operational refinement and long-term durability.