Rough idle, hard starting, hesitation under load, or a cylinder-specific misfire can involve an ignition coil or worn spark plug, but wiring, injectors, fuel delivery, intake leaks, sensors, compression, timing, and other mechanical conditions can create similar symptoms. This BDFHYK ignition service kit combines 8 ignition coils and 8 Iridium IX spark plugs for the listed applications below. Confirm the exact vehicle, engine, connector, and reference numbers before ordering.
| Vehicle | Years | Engine |
|---|---|---|
| INFINITI QX80 | 2014-2021 | 5.6L V8 |
| Nissan Armada | 2017-2020 | 5.6L V8 |
Fitment note: These 5.6L V8 applications can use position-specific coil references. Do not assume one printed coil number automatically applies to every bank or cylinder position.
UF677 and related position-specific references; compare the removed coil and service information, including 22448-1LA0A / 22448-1LA0B where applicable.
Inspect the affected ignition coil, spark plug, connector, wiring, boot area, and plug well before replacement. A cold-start or cylinder-specific misfire can also come from fuel delivery, air leaks, sensors, compression, or other mechanical conditions.
A marginal ignition component can become more noticeable when cylinder pressure rises under acceleration or load. Confirm the affected cylinder and component condition rather than treating hesitation alone as proof of a failed coil.
The package contains eight coils and eight plugs, but bank/position fitment still needs to be confirmed before treating it as a complete same-reference V8 coil set.
Important: These are BDFHYK OE-style aftermarket service components, not factory-branded parts. If symptoms remain after ignition service, continue diagnosis of the affected cylinder and related systems.
BDFHYK 8 Ignition Coil UF677 and 8 Iridium Spark Plug 93501 For INFINITI 2014-2021 QX80, Nissan 2017-2020 Armada 5.6L V8
