NGK 5068 Iridium Spark Plug IFR8H-11 for 2002-2017 Honda CRF450R/X

Vehicle Fitment

• 2002-2008 Honda CRF450R (450 cc 4-Stroke Motocross)
• 2005-2017 Honda CRF450X (450 cc Enduro/Trail)
• 2002-2009 Honda TRX450R Sportrax (450 cc ATV)
• 2012-2014 Honda TRX450ER Electric Start (450 cc ATV)

Features

• Genuine NGK Laser Iridium spark plug - premium ignition performance
• Fine-wire iridium center electrode for exceptional ignitability
• Platinum ground electrode for even wear and long life
• Solid copper core for excellent heat transfer and dampening
• 5 kΩ resistor to help reduce electrical noise and interference
• Iridium and platinum construction for extended service life
• Designed to improve throttle response and starting performance
• Standard 14 mm thread and 16 mm hex for easy install

Specifications

• Brand: NGK
• Part Number: 5068 (Service Code: IFR8H-11)
• Thread Size: M14 x 1.25
• Reach: 19 mm (0.75 in)
• Heat Range: 8
• Electrode Material: Iridium center, platinum ground
• Copper Core: Yes
• Resistor: Yes (5 kΩ)
• Seat Type: Flat/Gasket
• Pre-Gap: ~1.1 mm

Included Components

• 1x NGK 5068 (IFR8H-11) Laser Iridium Spark Plug

Product Description

The NGK 5068 (IFR8H-11) Laser Iridium spark plug is a high-performance replacement part engineered to meet or exceed original equipment standards for select Honda motocross, trail, and ATV models. Its fine-wire iridium center electrode paired with a platinum ground electrode delivers a strong, consistent spark that enhances ignition efficiency and throttle response. Designed with a copper core and precision materials, this plug helps maintain stable combustion and reliable starts even under demanding off-road conditions.

Construction optimized for durability and longevity includes corrosion-resistant plating and a resistor element that minimizes electrical interference with modern ignition systems. The 5068 spark plug's combination of iridium and platinum electrodes ensures extended service life and improved fuel efficiency compared to conventional plugs. With standard 14 mm threading and a 16 mm hex size, it installs easily using common tools, making it a dependable choice for routine maintenance or performance upgrades on compatible Honda CRF450R, CRF450X, and TRX450 machines.