NGK Laser Iridium Spark Plug Box of 4 (ILKR9Q7G) - 97312

The NGK Laser Iridium Spark Plug ILKR9Q7G (Part #97312) is a premium iridium ignition component engineered specifically for OE replacement applications. Sold here as a convenient box of 4, these plugs are purpose-built for today's high-tech engines — including confirmed fitment across multiple Hyundai Elantra trim levels and select Ski-Doo turbocharged snowmobile platforms. If you're doing a full tune-up and want a plug that delivers consistent ignition performance with long service life, the NGK 97312 is a factory-grade solution in a single purchase.

Key Features & Benefits

• Fine Wire Iridium Center Electrode (0.6mm): The laser-welded fine wire tip promotes a more focused spark and reduces the voltage required to fire, contributing to stable combustion and reliable starts.
• Iridium Alloy with Extremely High Melting Point: Iridium's thermal resilience makes it well-suited to high-performance and turbocharged engine environments where heat management is critical.
• Iridium Tipped Center Electrode — Six Times Harder Than Platinum: Greater hardness translates directly to electrode longevity and resistance to wear over time.
• Platinum Pad on Ground Electrode: Most Laser Iridium spark plugs feature a platinum pad on the ground electrode to promote even wear, especially in distributorless ignition systems common on modern vehicles.
• High-Grade Pure Alumina Silicate Ceramic Insulator: Provides superior dielectric strength and better heat transfer, helping prevent pre-ignition and plug fouling.
• 98% Pure Copper Core: The copper core aids efficient heat removal from the firing tip, helping the plug maintain its correct operating temperature range.
• Trivalent Metal Plating: The shell's trivalent plating delivers superior anti-corrosion and anti-seizing properties — important for aluminum cylinder heads where plug seizure is a real concern.
• Corrugated Ribs on Insulator: Designed to prevent flashover, protecting ignition performance under high-voltage conditions.
• Triple Seals: Prevent combustion gas leakage past the plug body for a secure, reliable installation.
• Engineered for OE Applications: NGK Laser Iridium plugs are tested to meet the standards of original equipment specifications, making them a drop-in replacement rather than a compromise.
• Up to 100,000-Mile Longevity: NGK rates the Laser Iridium line for long service intervals, reducing how often you need to revisit this maintenance item.

Specifications

• NGK Part Number: 97312
• NGK Plug Number: ILKR9Q7G
• Quantity: Box of 4
• Shell Thread Diameter: 12mm
• Thread Pitch: 1.25mm
• Seat Type: Gasket
• Reach: 26.5mm (1.04")
• Hex Size: 5/8" (16mm)
• Terminal Type: Solid
• Gap: 0.028" (0.7mm)
• Center Electrode Material: Iridium — Fine Wire, 0.6mm
• Ground Electrode Material: Platinum — Standard Type
• Projection: Projected
• Heat Range: 9
• Resistor: Yes
• Torque (Cast Iron Head): 10.8–18 lb-ft
• Torque (Aluminum Head): 10.8–14.5 lb-ft
• Longevity Rating: Up to 100,000 miles
• Warranty: 60 Days

Fitment

The NGK ILKR9Q7G (97312) has confirmed fitment on the following vehicles. Always verify your specific engine configuration before ordering.

Automotive — Hyundai Elantra (2017–2020):

• 2020 Hyundai Elantra: Eco, Limited, SE, SEL, Sport, Value Edition
• 2019 Hyundai Elantra: Eco, Limited, SE, SEL, Sport, Value Edition
• 2018 Hyundai Elantra: Eco, Limited, SE, SEL, Sport, Value Edition
• 2017 Hyundai Elantra: Eco, Limited, SE, Sport, Value Edition

Powersports — Ski-Doo (2021–2022):

• 2022 Ski-Doo Freeride E-TEC 850 Turbo (146, 154, 165)
• 2022 Ski-Doo Summit X E-TEC 850 Turbo (154, 165)
• 2022 Ski-Doo Summit X with Expert Package E-TEC 850 Turbo (154, 154 2.5, 165, 175)
• 2021 Ski-Doo Freeride E-TEC 850 Turbo (154, 165)
• 2021 Ski-Doo Summit X E-TEC 850 Turbo (154, 165)
• 2021 Ski-Doo Summit X with Expert Package E-TEC 850 Turbo (154, 165, 175)

Note: This is a 4-cylinder set. If your vehicle requires more or fewer plugs, verify your cylinder count. Use NGK's fitment lookup or contact us to confirm compatibility with your specific engine code.

What's in the Box

• 4x NGK Laser Iridium Spark Plugs (ILKR9Q7G / 97312)

Why Buy from ThreePiece.us

At ThreePiece.us, we stock the NGK 97312 Laser Iridium spark plug set so it's ready to ship to you quickly. Every order ships free — no minimum, no hoops to jump through. Need to spread out the cost of a tune-up or a larger repair job? We offer financing through Affirm, so you can get the parts you need now and pay over time. Not sure if this plug fits your exact engine code or trim? Our team is here to help you confirm fitment before you buy — just reach out before placing your order.

Frequently Asked Questions

Does this listing include 4 spark plugs or just 1?

This listing is for a box of 4 NGK ILKR9Q7G Laser Iridium spark plugs (NGK part #97312). If your vehicle has a 4-cylinder engine, this set covers a complete plug replacement service.

What is the pre-set gap on the NGK ILKR9Q7G?

The factory-set gap is 0.028" (0.7mm). NGK Laser Iridium plugs are precision-gapped at the factory. Avoid re-gapping iridium fine-wire electrodes with traditional tools, as the thin electrode can be damaged.

What torque should I use when installing these plugs?

NGK specifies 10.8–18 lb-ft for cast iron cylinder heads and 10.8–14.5 lb-ft for aluminum cylinder heads. Most modern engines use aluminum heads, so always confirm your head material and use a calibrated torque wrench for proper installation.

Will these fit my Hyundai Elantra Sport or the turbocharged Ski-Doo?

Yes — confirmed fitment includes the 2017–2020 Hyundai Elantra Sport trim as well as the 2021–2022 Ski-Doo Summit X and Freeride E-TEC 850 Turbo models. That said, fitment can vary by engine sub-code, so we recommend verifying your specific engine before ordering. Contact us if you have any questions.