What Vehicles Fit UF333 Ignition Coils?

Based on the supplied fitment information:

*The supplied listing is internally inconsistent on Matrix and xB fitment. Verify the exact year, engine and OE coil number before adding those applications to an automated fitment database.

Toyota Camry 2.4L

The strongest application supplied for this coil set is:

2002–2009 Toyota Camry 2.4L four-cylinder

Four coils provide a complete replacement set for compatible Camry four-cylinder engines.

A failing coil can cause:

• Rough idle
• Engine shaking
• Hesitation
• Misfire
• Loss of power
• Hard starting
• Poor fuel economy
• Check Engine light

If your Camry is running poorly, however, diagnose the problem before replacing the entire ignition system.

Toyota RAV4

The supplied listing identifies:

2001–2008 Toyota RAV4 – compatible 2.4L applications

Engine verification matters because not every RAV4 produced during this period necessarily uses the same ignition configuration.

For ProStreetOnline, I’d catalog this by engine + OE coil number, not model year alone.

Toyota Highlander

Listed application:

2001–2007 Toyota Highlander 2.4L L4

Do not assign the UF333 to V6 Highlander applications.

That sounds painfully obvious, but parts databases have demonstrated impressive creativity over the years.

Toyota Camry Solara

Listed fitment:

2002–2006 Toyota Camry Solara 2.4L L4

Again, the engine designation matters because Solara models were also offered with V6 engines.

Scion tC

Listed fitment:

2005–2010 Scion tC 2.4L L4

The first-generation tC’s 2.4L four-cylinder makes it a natural enthusiast-oriented application for this coil set.

For a higher-mileage tC experiencing misfires or hesitation, the ignition coils and spark plugs should both be inspected.

Scion xB

The supplied listing claims:

2010–2015 Scion xB 2.4L L4

I would verify this application against UF333 / 90919-02244 before publishing it as guaranteed fitment, because the seller’s broader description conflicts with some of its specific application information.

When two fitment statements disagree, guessing isn’t product-data management.

It’s return-label manufacturing.

Signs of a Bad Toyota Ignition Coil

Common ignition-coil symptoms include:

• Rough idle
• Engine misfire
• Shaking
• Hesitation
• Poor acceleration
• Reduced engine power
• Check Engine light
• Flashing Check Engine light
• Poor fuel economy
• Hard starting

Pro Street’s 7 Bad Ignition Coil Symptoms You Should Never Ignore provides a deeper explanation of coil-related symptoms and diagnosis.

Toyota P0300 Misfire Diagnosis

A weak coil may contribute to:

P0300 – Random/Multiple Cylinder Misfire

A four-cylinder engine may also store:

P0301 – Cylinder 1 Misfire
P0302 – Cylinder 2 Misfire
P0303 – Cylinder 3 Misfire
P0304 – Cylinder 4 Misfire

Pro Street’s P0300 Random/Multiple Cylinder Misfire Guide explains why these codes should be diagnosed rather than treated as automatic ignition-coil replacement orders.

Other causes can include:

• Worn spark plugs
• Fuel injector problems
• Intake leaks
• Wiring faults
• Fuel-delivery problems
• Low compression
• Mechanical engine issues

Use a Coil-Swap Test

If your Camry stores P0302, one useful diagnostic technique is moving the cylinder-two coil to another cylinder.

If the misfire follows the coil, you’ve developed strong evidence of a defective coil.

If the misfire remains on cylinder two, keep diagnosing.

The ECU tells you where the misfire happened.

It doesn’t necessarily tell you why.

Inspect the Spark Plugs

If you’re replacing all four coils, inspect all four spark plugs.

Worn plugs can require greater ignition voltage to fire reliably, placing additional demand on aging coils.

Look for:

• Excessive electrode wear
• Enlarged plug gap
• Oil contamination
• Carbon buildup
• Fuel fouling
• Cracked porcelain
• Carbon tracking
• Evidence of overheating

Pro Street’s How to Pick Spark Plugs for Your Build explains plug material, heat range and selection.

Check for Oil Around the Coils

While the coils are removed, inspect the spark-plug wells.

Oil around the coil boot may indicate a valve-cover or spark-plug-tube sealing problem.

Installing a new ignition coil without correcting substantial oil contamination can shorten its life.

Fix the leak rather than providing the new coil with the same hostile work environment that killed its predecessor.

Should You Replace All Four Coils?

This package contains four coils, making it convenient for a complete four-cylinder ignition refresh.

Replacing all four can make sense when:

• Multiple coils have failed
• All coils are original and high mileage
• Coil housings or boots are deteriorating
• Several cylinders show ignition problems
• You’re performing a complete ignition service

If one relatively new coil has conclusively failed and the remaining three are healthy, replacing every coil isn’t automatically necessary.

Diagnosis determines the repair.

Can UF333 Coils Increase Horsepower?

The manufacturer advertises enhanced ignition energy compared with OE coils.

That should not be interpreted as a guaranteed horsepower increase.

On a stock engine with properly functioning factory coils, replacement coils typically won’t unlock hidden horsepower.

If the existing coils are weak, however, restoring reliable spark can recover performance that was being lost through misfires or incomplete combustion.

There’s a difference between restoring horsepower and creating horsepower.

Marketing departments occasionally misplace that distinction somewhere behind the exclamation marks.

Is the UF333 4-Coil Set Worth It?

For a compatible Toyota or Scion 2.4L four-cylinder, this UF333 four-piece ignition coil set provides a convenient way to replace all four coils simultaneously.

Its strongest advertised applications include:

• Toyota Camry 2.4L
• Toyota RAV4 2.4L
• Toyota Highlander 2.4L
• Toyota Camry Solara 2.4L
• Scion tC 2.4L

Verify UF333 / 90919-02244 / C1330 against the original coil before ordering, particularly for Matrix and xB applications where the supplied listing contains inconsistencies.

Shop replacement ignition and maintenance parts through Pro Street Online.