The 2017 Hyundai Elantra generally uses iridium-tipped spark plugs. The exact plug type depends on the engine installed, with the 2.0-liter Nu GDI engine and the 1.6-liter turbo Gamma engine (Elantra Sport) both using iridium plugs, though part numbers vary by market.
Which engines were offered and what that means for plugs
The 2017 Elantra lineup featured two main engines in many markets: a 2.0L Nu GDI engine for the base models and a 1.6L turbo Gamma engine for the Elantra Sport. While both rely on iridium-tipped plugs, the factory part numbers and exact specifications can differ by region and supplier.
- 2.0L Nu GDI engine – iridium-tipped spark plugs from NGK or Denso; typical gap around 0.043 inches (1.1 mm). Factory part numbers vary by market.
- 1.6L turbo Gamma engine (Elantra Sport) – iridium-tipped spark plugs; brands and gaps are similar, with regional variations in part numbers.
Always verify the exact replacement part using your vehicle identification number (VIN) and the owner's manual or a Hyundai dealer, since regional differences can apply and some markets use slightly different plug styles or heat ranges.
Spark plug type by engine
To confirm the exact type installed in your vehicle, you can reference the owner's manual, check under-hood labels, or consult a Hyundai dealer. If you are replacing the plugs yourself, use the recommended spark plug type and gap for your specific engine code and regional spec.
- 2.0L Nu GDI engine – iridium-tipped spark plugs; options include NGK or Denso; typical gap around 0.043 inches (1.1 mm).
- 1.6L turbo Gamma engine – iridium-tipped spark plugs; similar brand options; typical gap around 0.043 inches (1.1 mm).
In short, both engines in the 2017 Elantra use iridium-tipped plugs, but exact part numbers and gap specs should be confirmed for your market and engine code.
Replacement intervals and maintenance guidance
Iridium plugs last longer than older copper plugs and are commonly designed for longer service intervals. For the 2017 Elantra, Hyundai and aftermarket guidance typically place replacement intervals in the range of 60,000 to 100,000 miles, depending on the exact plug specification and driving conditions. Always follow the schedule in your owner's manual or consult a dealer for the precise interval for your engine and region.
How to identify the spark plug type on your car
To ensure you buy the correct plugs, identify your engine code (2.0L Nu GDI or 1.6L turbo Gamma) and check the official specifications. You can:
- Look up your VIN in Hyundai’s service portal or dealership system to pull the original equipment part numbers.
- Refer to the owner’s manual for the recommended spark plug type and gap.
- Ask a Hyundai service advisor or parts counter at a dealership for the exact iridium plug specification for your market.
When replacing, use the correct torque specification for the plugs and avoid using anti-seize on modern iridium plugs unless explicitly advised by Hyundai, as improper torque or lubrication can affect sealing and performance.
Where to buy replacements
Common aftermarket options for Hyundai engines are NGK and Denso iridium plugs. Match the plugs to your engine code and regional spec using the manual or dealer guidance, and verify the correct heat range and gap before purchasing. Availability can vary by market.
Summary: For a 2017 Hyundai Elantra, expect iridium-tipped spark plugs regardless of engine, with the exact part number and gap determined by whether you have the 2.0L Nu GDI or the 1.6L turbo Gamma engine and by regional specifications. Always confirm with official sources before buying and adhere to the recommended replacement interval.