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This guide covers one part and one engine family: the ignition coil for the Beta II 2.0L DOHC (G4GC) engine. It is a direct-fit replacement for the 2003-2009 Hyundai Elantra, the 2003-2008 Hyundai Tiburon, and 2005-2007 Kia 2.0L models. If your car falls inside those ranges, every number you need before ordering is below.

Everything here — resistance values, DTC coverage, connector type, and the compliance list — comes straight from the published specification. No assumptions about year, trim, or engine configuration.

Quick summary: 3-pin plug-and-play connector for factory wiring, primary resistance 0.74 Ω ±10%, secondary resistance 8.0-13.6 kΩ, peak output 40 kV+. Resolves misfire codes P0300 and P0304 and coil-circuit codes P0351 and P0354.

The fitment range, in one list

Hyundai and Kia fitted the Beta II 2.0L DOHC (G4GC) engine across three vehicles, which is why one coil covers all three applications:

• Hyundai Elantra: 2003-2009
• Hyundai Tiburon: 2003-2008
• Kia 2.0L models: 2005-2007

For photos, stock, and the seller's fitment notes, open the ignition coil compatible with 03-09 Hyundai Elantra, Tiburon, and 05-07 Kia 2.0L on KOEEP, then match every number in this guide against your own car.

The check most buyers skip

A similar-looking coil can still be incompatible. Pull the original part, read the OE or interchange number printed on it, and compare it against the fitment notes before you order. Match connector shape, mounting points, and dimensions too. Five minutes here prevents most returns.

Full specifications

Every value below is quoted from the published specification. Use it as the baseline when you test the coil you remove.

If the coil you remove reads outside those resistance ranges, you have a concrete comparison point before you spend money.

DTC mapping: what the codes tell you

The specification ties the coil to two groups of trouble codes. Which group your scanner shows tells you where to look first.

Misfire codes: P0300 and P0304

P0300 reports a random or multiple-cylinder misfire. P0301, P0302, P0303, and P0304 point to cylinders 1, 2, 3, and 4 in order. The specification resolves misfire DTCs across that full range, so a weak or dead coil is a documented fix for these codes on the listed engines.

Coil-circuit codes: P0351 and P0354

The coil-circuit group has four codes — P0351, P0352, P0353, and P0354 — one per ignition coil circuit. When one appears, the circuit is the place to look: coil, wiring, or connector. The 3-pin plug-and-play connector mates straight to factory wiring, so the swap stays simple.

One caution: a misfire can also come from worn spark plugs or damaged wiring, so inspect nearby components that could cause the same symptom before you blame the coil. To service plugs and coil together, KOEEP lists a 2.0L L4 ignition coil and spark plug set for the 2006 Elantra, Tiburon, and Tucson.

The 2026 standards, in plain terms

The coil meets the 2026 diagnostic and environmental standards below. Each name comes down to one practical point:

• ISO 11898-1:2024 CAN FD — communication on modern CAN FD networks.
• SAE J1979 — the diagnostic services your scanner uses to read and clear codes.
• UDS ISO 14229-1 — unified diagnostic services between tool and module.
• ISO 16750-3 thermal shock — tolerance for rapid engine-bay temperature swings.
• SAE J2804 — the coil qualification standard named in this guide's title.

Practical takeaway: diagnostic communication and thermal durability are engineered in to 2026 spec. That matters most if you scan your own codes with a current tool.

What to verify before ordering

Start with the vehicle, not the part. Year, make, model, and engine or drivetrain decide fitment more than any product photo does.

Vehicle details

• Record the VIN and exact trim level.
• Check whether the part is front/rear, left/right, or a complete set, and note which one your repair needs.

The original part

• Compare the OE or interchange number and connector layout.
• Match connector shape, mounting points, and dimensions against the removed part.
• Inspect nearby components that could cause the same symptom before you blame the coil.

Then read the seller's fitment notes and compare the original part before installation. Keep the removed coil until the replacement has been test-fitted — it is your reference if anything has to go back.

Installation and diagnostic checklist

Disconnect power when the procedure requires it, and support the vehicle correctly if you need to get under it. Follow the workshop manual for torque values and calibration steps. The coil is simple; the surrounding hardware is no place for guesswork.

• Clean mating surfaces before fitting the new coil.
• Route wiring away from heat and moving parts.
• Test the repair before returning the vehicle to service.

If a warning light stays on after installation, scan the relevant diagnostic codes and verify the repair instead of replacing additional parts at random. The mapping above tells you whether you fixed the circuit or moved the problem.

How to choose the right replacement

Prioritize four things: verified compatibility, material quality, warranty coverage, and clear product photos. For safety-critical systems such as brakes, steering, sensors, and fuel delivery, use the vehicle-specific specification rather than a universal substitute — ignition parts deserve the same standard.

Older Elantra or Tiburon? Different coil

This part starts at the 2003 model year. For 1997-2001 Elantra and Tiburon models, KOEEP lists a separate ignition coil, so match your model year before ordering.

Where to browse and read more

The KOEEP ignition systems & components collection gathers the full ignition catalog in one place, so you can compare options side by side.

KOEEP's guides also cover other systems on the same cars: the 2017-2020 Elantra front-left door lock actuator (81310F2030) compliance guide and the 2012-2016 Elantra mirror turn signal repeater (OEM 87614-3X000) specs and CAN-bus guide.

Working on the interior of a newer Elantra next? The red center console molding sticker guide for the 2016-2020 Elantra covers that customization from prep to finish.

Get a fitment check before you buy

KOEEP verifies fitment from your VIN and the OE number on the removed part. Send both through the fitment quote request page, or reach support by email or on WhatsApp for a quick answer before you pay.

Frequently asked questions