Lexus ES300h Fitment Warning
UF487-style coils are cataloged for the 2013–2018 Lexus ES300h, but the supplied description does not identify the spark-plug part number included in this kit. FinditParts
Do not advertise this complete coil-and-plug kit as confirmed for the ES300h until the plug manufacturer number, heat range, reach and factory gap have been verified. A coil interchange alone does not prove that the accompanying spark plugs are correct.
Interchange and Reference Numbers
This kit is advertised as replacing or cross-referencing:
- UF487
- UF507
- UF630
- Denso 673-1309
- 90919-02250
- 90919-02251
- 90919-02255
- 90919-02256
- 90919-A2002
- 90919-A2003
- 90919-A2004
- 90919-A2005
- 90919-A2007
- 90919-A2013
- 90919-C2001
UF487 is commonly cross-referenced to Denso 673-1309 and several of these Toyota numbers. However, the long interchange list spans multiple engines and vehicle configurations, so it should not replace a VIN-based fitment check. FinditParts
Toyota also lists 90919-A2002 as superseded by 90919-A2013, supporting that portion of the interchange information. OEM Toyota Coil Assembly, Ignition
When Should the Ignition Components Be Replaced?
Possible symptoms of worn plugs or failing coils include:
- Rough or unstable idle
- Hesitation under acceleration
- Hard starting
- Reduced engine power
- Cylinder-specific P0301–P0304 codes
- Random or multiple-cylinder P0300 codes
- Flashing check-engine light during an active misfire
See our guide to seven common bad-ignition-coil symptoms before ordering parts.
A flashing check-engine light indicates a severe active misfire that can overheat the catalytic converter. Stop driving and diagnose the problem instead of hoping the light gets bored and leaves.
Installation Notes
Installation is straightforward on most listed four-cylinder applications, but observe the following precautions:
- Work only on a cool engine.
- Disconnect the negative battery terminal.
- Remove the engine cover where fitted.
- Release each coil connector without pulling on its wiring.
- Clean debris from the plug wells before removing the plugs.
- Confirm the new plug number and gap against the vehicle specification.
- Start spark plugs by hand to avoid damaging the aluminum cylinder-head threads.
- Tighten plugs and coil fasteners to the vehicle manufacturer’s specifications.
- Apply dielectric grease only where recommended—do not coat the plug electrodes or threaded shell.
- Clear stored codes and confirm that the engine runs without an active misfire.
Important Fitment Information
Ignition-coil housings may differ visually while sharing the same electrical and dimensional application. Match the vehicle’s year, model, engine, production details, connector and OE number before ordering.
This kit should not be selected solely because “UF487” appears somewhere in an online interchange list. Toyota used related coils across four-, six- and eight-cylinder engines, while this particular package contains only four coils and four plugs.
Claims Removed From the Original Listing
The following claims should not be published without independent test documentation:
- “Improves fuel economy by 15–22%”
- “Meets EPA standards”
- Guaranteed 100,000–120,000-mile service life
- Guaranteed improvement in horsepower or fuel economy
Fresh ignition parts can restore performance lost through worn or failed components. They do not create a magical 22-percent fuel-economy bonus. If they did, Toyota would probably have noticed.
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