The BOSCH YR7SII33U (0242135548) Double Iridium Spark Plug is engineered using advanced Bosch ignition technology to provide exceptional performance, durability, and reliability for modern gasoline engines. Designed with a combination of iridium and platinum alloy technology, this spark plug offers excellent resistance against corrosion, erosion, and extreme operating temperatures.

The ultra-fine 0.6 mm iridium center electrode creates a concentrated spark with lower ignition voltage requirements, improving combustion efficiency and ensuring reliable engine starts in different driving conditions. The iridium ground electrode inlay and laser-welded construction provide outstanding durability while maintaining consistent spark performance over the life of the plug.

Developed to meet or exceed original equipment specifications, the Bosch YR7SII33U is an ideal replacement spark plug for selected Hyundai and KIA vehicles requiring high-performance ignition components.

Key Features

• Genuine BOSCH Double Iridium Spark Plug
• Advanced platinum-iridium electrode technology
• Ultra-fine 0.6 mm iridium center electrode
• Iridium ground electrode inlay for maximum durability
• Up to 4X longer service life compared to standard copper spark plugs
• Excellent ignition performance and fuel combustion
• OE-matched spark position for modern GDI engines
• Laser-welded tapered ground electrode for improved strength
• Factory pre-gapped for easy installation
• Copper core helps prevent pre-ignition and fouling
• Nickel-plated shell provides corrosion resistance
• Rolled threads prevent seizing and simplify removal
• Ribbed ceramic insulator prevents electrical flashover
• Designed for smooth acceleration and efficient engine operation

Technical Specifications

Benefits

The Bosch YR7SII33U Double Iridium Spark Plug helps unlock your engine’s full performance potential by delivering a stronger and more stable ignition spark. The advanced iridium-platinum electrode design reduces wear, maintains the correct spark gap for longer, and improves combustion efficiency.

Its fine wire center electrode allows faster ignition with less voltage, helping improve fuel economy, reduce emissions, and provide smoother engine operation. The durable construction ensures reliable performance even under high temperatures, heavy loads, and challenging driving conditions.

Common Problems It Helps Solve

• Difficult engine starting
• Poor acceleration
• Increased fuel consumption
• Engine hesitation
• Rough idling
• Ignition misfires
• Reduced engine performance
• Spark plug corrosion and wear
• Unstable combustion

Compatible Vehicles

Hyundai

• Hyundai Elantra [AD] (2017–2019)
• Hyundai i30 [GD] (2012–2017)
• Hyundai i40 [VF] (2013–2016)
• Hyundai Sonata [YF] (2010–2015)
• Hyundai Sonata [LF] (2015–2019)
• Hyundai Tucson [TL] (2015–2021)

KIA

• KIA Cerato [YD] (2013–2018)
• KIA Optima [TF Facelift] (2014–2017)
• KIA Sportage [SL Facelift] (2014–2015)
• KIA Sportage [QL] (2015–2022)

Compatible Engines

• 1.8L G4NB I4
• 2.0L G4NA / G4NC I4