Infiniti QX60 Hybrid Warning
The listing includes the 2014 Infiniti QX60 Hybrid 2.5L. Infiniti catalogs a hybrid-specific spark plug under OE number 22401-1KC1C for 2014–2017 QX60 Hybrid applications. Official INFINITI Parts Store
Do not list the QX60 Hybrid as confirmed until both the supplied coil and 9029 plug are cross-referenced against the vehicle’s original components.
V8 Applications Are Not Complete-Kit Fitments
UF549-style coils may individually fit:
- 2009–2013 Infiniti FX50 — 5.0L V8
- 2011–2013 Infiniti M56 — 5.6L V8
However, these vehicles require eight coils and eight spark plugs. This four-piece package services only half of a V8.
More importantly, the included NGK 9029/DILKAR6A11 plugs are not the specified plugs for these engines:
- The FX50 5.0L commonly uses a DF7H-11B-style plug rather than 9029. eurocarcare.net
- The M56 uses a different Infiniti spark plug, including OE reference 22401-1LA1C—not 9029. Low Price at InfinitiPartsDeal
Therefore, remove the FX50 and M56 from this complete coil-and-plug kit’s fitment. The coils may interchange, but the included plugs and package quantity do not.
Replacement Numbers
Ignition coils
- UF549
- C1696
- 5C1753
- E1049
- 22448-JA00A
- 22448-JA00C
- 22448-ED000
- 22448-EN000
- 22448-1KT0A
Spark plugs
- NGK 9029
- NGK DILKAR6A11
Match both the coil and plug numbers. Confirming only UF549 is not enough when purchasing a combination kit.
Symptoms This Kit May Correct
Correctly matched replacement coils and plugs may help address:
- Rough or unstable idle
- Hesitation under acceleration
- Hard starting
- Reduced engine power
- P0300 random or multiple-cylinder misfire
- P0301 through P0304 cylinder-specific misfires
- Ignition-coil circuit trouble codes
- Flashing check-engine light
- Increased fuel consumption caused by an active misfire
Read our guide to bad ignition-coil symptoms before replacing parts. A misfire can also result from a fuel injector, intake leak, wiring problem or low compression.
Our P0300 diagnostic guide explains why a trouble code points toward a problem area rather than automatically convicting all four coils.
About the “15% More Energy” Claim
The manufacturer claims that the replacement coils produce up to 15 percent more energy than OE coils. Unless independent test data is available, present this strictly as a manufacturer claim.
New ignition components can restore performance lost through worn plugs or failing coils. They do not guarantee additional horsepower or improved fuel economy on an otherwise healthy engine. Electricity remains stubbornly unimpressed by marketing percentages.
Installation Notes
- Verify the vehicle’s engine size and production year.
- Match the original coil number and spark-plug number.
- Allow the engine to cool completely.
- Disconnect the negative battery terminal.
- Remove the engine cover where fitted.
- Release the coil connectors without pulling on their wiring.
- Clean debris from around each plug well.
- Inspect for oil or moisture contamination.
- Compare the new plugs with the originals.
- Check the factory gap specification.
- Start each plug by hand to prevent cross-threading.
- Tighten plugs and coil fasteners to factory specifications.
- Clear stored codes and verify the repair.
NGK recommends checking the required gap for the exact application even when replacement plugs arrive pre-gapped. Review its guide on checking spark-plug gaps.
Recommended Product Title
UF549 Ignition Coils and 9029 Iridium Spark Plugs for Select Nissan Four-Cylinder Models – Set of 4
This is more accurate than including the FX50 and M56 V8s in the headline.
There are no reviews yet.