Ignition Coil & Iridium Spark Plugs for Pontiac Montana (2006) 3.9L V6

Direct-Fit Ignition Coil & Iridium Spark Plugs for Pontiac Montana

Provides a complete ignition overhaul to restore proper spark delivery, eliminating misfires and rough idling in the 3.9L V6.

The Stock Montana LZ9 Ignition Weakness

The factory ignition system on the 3.9L High Value V6 is notoriously susceptible to thermal degradation and voltage leaks as mileage accumulates. Over time, the constant heat cycles inside the cramped engine bay cause the OEM coil pack's epoxy potting to harden and crack, leading to internal arcing and weak spark delivery. Furthermore, the factory standard spark plugs and aging wires experience elevated resistance, increasing the electrical load on the primary coil. This combination typically results in hesitation under acceleration, noticeable rough idling, and inevitable P0300-series random misfire OBD-II trouble codes, drastically reducing fuel efficiency and drivability.

The Engineering Solution

This comprehensive ignition service kit resolves OEM spark failure by combining a high-output ignition coil pack with premium iridium spark plugs and high-suppression wire leads. The upgraded coil features advanced dielectric epoxy and high-grade copper windings to ensure maximum voltage output without the risk of thermal breakdown or internal arcing. Paired with iridium-tipped spark plugs—which offer a melting point of over 4,000°F and require significantly less firing voltage than traditional copper or platinum plugs—the system guarantees a concentrated, consistent spark kernel. The included spark plug wires utilize a heavy-duty silicone jacket and tightly wound spiral core to reject electromagnetic interference (EMI) and resist high under-hood temperatures. This ensures maximum energy transfer directly to the combustion chamber for improved throttle response, restored power, and stabilized idle.

Technical Specifications

Compatibility

• Package Includes: 1x Ignition Coil Pack (Distributor Block)
• Package Includes: 6x Iridium Type Spark Plugs
• Package Includes: 6x Spark Plug Wires
• Cross-Reference OEM Parts: UF434, SP432, 3165, D599A, 5C1564, E914, 52-1826, IC554, 12568185, 12579177, 12587153, 12595088, 48714, GN10408, 6737001, IGC0068, C-740, C1521

The Pontiac Reliability Standard

Built for the rigorous demands of daily commuting and family hauling, this direct-replacement ignition kit ensures your Montana maintains consistent reliability. By preventing misfires and optimizing fuel combustion, it keeps your V6 running smoothly through every drive cycle without triggering frustrating Check Engine Lights.