This BDFHYK UF540 ignition coil and 90083 / LTR5BI-13 iridium spark plug set is designed for listed Mazda 3, Mazda 6, and Mazda CX-7 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 the exact year, model, engine, UF540-style coil reference, 90083 spark plug reference, connector shape, and 4-coil / 4-plug service quantity.
| Make | Model | Listed Years | Engine Group | Fitment Check |
|---|---|---|---|---|
| Mazda | 3 | 2007-2013 | Listed L4 applications | Confirm engine, UF540-style coil, 90083 / LTR5BI-13 plug reference, and connector shape. |
| Mazda | 6 | 2006-2013 | Listed L4 applications | Compare the removed coil, spark plug reference, and service information. |
| Mazda | CX-7 | 2010-2012 | 2.0L / 2.3L / 2.5L L4 listed applications | Confirm original ignition layout, OE reference, and plug specification. |
Fitment note: Mazda fitment can vary by year, engine, and market configuration. Do not order by model name alone; year, engine, OE reference, connector style, plug reference, and quantity must match.
Ignition coils and spark plugs may need inspection when the engine has rough idle, hard start, hesitation, misfire symptoms, reduced power, poor fuel economy, or a check engine light. These symptoms can also come from wiring, fuel delivery, intake leaks, sensor faults, or compression issues. For repair planning, review Mazda L4 ignition repair planning.
Install on a cool engine, inspect old plugs for fouling, check connector locks, and follow Mazda service information for plug torque and gap. If symptoms remain after installation, continue diagnosis by checking wiring, fuel pressure, injector operation, intake leaks, and compression. This BDFHYK set is an OE-style aftermarket replacement, not a factory-branded Mazda part.
BDFHYK 4 Ignition Coil UF540 and 4 Iridium Spark Plug 90083 for Mazda 3 2007-2013, 6 2006-2013, CX-7 2010-2012 2.0L / 2.3L / 2.5L L4
