Ignition Coil and Iridium Spark Plugs for Cadillac XT5 (2017-2021) 3.6L
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Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2017-2021 Cadillac XT5
Primary Function: Direct replacement primary and secondary ignition tune-up kit engineered to restore factory spark energy, dwell time stability, and combustion efficiency across all six cylinders.
The Stock XT5 Ignition Degradation
The naturally aspirated 3.6L V6 operates under tight engine bay packaging that traps excessive radiant heat around the cylinder heads. Over time, OEM coil assemblies suffer dielectric breakdown within the internal epoxy potting and degradation of the secondary winding insulation. Combined with electrode gap erosion on aged spark plugs, this thermal stress causes secondary voltage leakage, intermittent misfires under load (P0300-P0306 DTCs), rough idle vibration, and reduced fuel economy from unburned fuel mixtures.
The Engineering Solution
This comprehensive ignition service kit restores factory ignition curve precision using six coil-on-plug units wound with high-conductivity copper primary and secondary windings. Sealed in heat-resistant dielectric epoxy, these coils resist thermal cycling and electrical cross-talk. Matched with six fine-wire laser-welded iridium spark plugs, the set requires lower striking voltage, promotes clean flame-front propagation in high-compression direct-injection chambers, and ensures consistent arc delivery across the entire RPM band.
Technical Specifications
| Fitment | 2017-2021 Cadillac XT5 |
| Engine / Chassis | 3.6L LGX V6 / GM C1XX Platform |
| Stock Output | 310 hp / 271 lb-ft (Approx) |
| Part Number | UF830, UF-830, 12666339, GN10889, C2035, C-962, 5C2094 |
Compatibility
- 2017 Cadillac XT5 (Base, Luxury, Premium Luxury, Platinum 3.6L V6 Gas)
- 2018 Cadillac XT5 (Base, Luxury, Premium Luxury, Platinum 3.6L V6 Gas)
- 2019 Cadillac XT5 (Base, Luxury, Premium Luxury, Platinum 3.6L V6 Gas)
- 2020 Cadillac XT5 (Premium Luxury, Sport 3.6L V6 Gas)
- 2021 Cadillac XT5 (Premium Luxury, Sport 3.6L V6 Gas)
The Cadillac Precision Standard
Engineered for exact pin-to-terminal OE fitment, this ignition set ensures factory ECM communication without generating false check engine lights, delivering the smooth, balanced power delivery and refined idle expected of a luxury crossover platform.
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