This BDFHYK UF351 ignition coil and 4505 iridium spark plug set is designed for listed 2002-2006 Nissan Sentra 1.8L L4 applications. It is intended for ignition service when the original coils or spark plugs have been diagnosed as worn, weak, damaged, or related to misfire symptoms. Before ordering, confirm exact year, 1.8L engine, UF351-style coil reference, 4505 plug reference, connector shape, and 4-coil / 4-plug service quantity.
| Make | Model | Listed Years | Engine | Fitment Check |
|---|---|---|---|---|
| Nissan | Sentra | 2002-2006 | 1.8L L4 | Confirm UF351-style coil, 4505 spark plug reference, connector, and original ignition layout. |
Fitment note: Sentra 1.8L applications overlap by year and coil reference. Compare the removed coil, plug reference, and service information before ordering.
Ignition coils and spark plugs may need inspection when the engine has rough idle, hard start, hesitation, misfire symptoms, poor acceleration, reduced fuel economy, or a check engine light. Worn spark plugs can increase ignition load, while a weak coil can cause cylinder-specific misfire symptoms. For component-level inspection, review later Sentra spark plug inspection tips.
Work on a cool engine, inspect plug wells, check connector locks, and follow Nissan-specific torque and gap guidance. If a misfire remains after installation, continue diagnosis by checking wiring, injector operation, fuel pressure, intake leaks, and compression. This BDFHYK set is an OE-style aftermarket replacement, not a factory-branded Nissan part.
BDFHYK 4 Ignition Coil UF351 and 4 Iridium Spark Plug 4505 for Nissan Sentra 1.8L L4 2002-2006
