NGK Ruthenium HX Spark plugs - TOYOTA 3.5L / 4.0L 

New, state of the art NGK Ruthenium plugs designed for engines that demand high ignitability. The Double Fine Electrode (DFE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions. 0.4mm Ruthenium alloy fine wire center electrode and 0.8mm platinum fine wire ground electrode. Trivalent metal platinum provides superior anti-corrosion and anti-seizing properties. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator provides superior strength and better heat transfer. Copper core aids in heat removal. Recommended use with RIPP coil packs. 

* Select your vehicle before adding to cart. 

• Pre-Gapped to .044 (OEM spec)
• Each order incudes a complete set of spark plugs for the selected vehicle.
  
• Great spark plug for vehicle's with upgraded coil packs. 
• Faster Flame Speed. 
  
• Dual electrode; Ruthenium center + Platinum tipped ground strap. 
  

Compatible with the following vehicles: 

2005-2015 Toyota Tacoma 4.0l

2016-2022 Toyota Tacoma 3.5l

2003-2009 Toyota 4 Runner 4.0l

2010-2023 Toyota 4 Runner 4.0l

2007-2009 Toyota FJ Cruiser 4.0l

2010-2020 Toyota FJ Cruiser 4.0l

2005-2009 Toyota Tundra 4.0l

2010-2015 Toyota Tundra 4.0l

2005-2021 Toyota Hilux 4.0l

2020+ Toyota Camry TRD / Avalon 3.5l

2007+ Lexus is250 / is350

2006+ Lexus gs350 / gs350h

2015+ Lexus RC350 

2016+ Lexus Rx350 / RX450h

2006+ Es350

PLEASE NOTE: SPARK PLUGS DO NOT HAVE A WARRANTY. 

Pro Tips:

• Use factory specified gap .044
• Service spark plugs every 45-50,000 miles. 
• Check Spark plug gap! Never install a spark plug without first checking gap and carefully adjusting if necessary.
• Ruthenium Plugs have a platinum tipped ground strap! Carefully gap with proper feeler or proper gapping tools.
• Ruthenium spark plugs have a delicate center electrode(s). When gapping use high quality gapping tools and feeler gauges. If using a traditional plug gapper avoid contact with the electrodes at all times. Manipulate the plug's ground strap only!
• Checking gap on old plugs that have been removed is commonly overlooked. Recording gap size on a old plug will help determine how often plugs require service. (as plugs wear, gap will increase in size)
• Inspect plugs for hairline cracks and damage before installation. Plugs can be mishandled, dropped and damaged. Carefully inspect a plug's electrode, porcelain and ceramic portion. 
• Apply Anti-seize compound to spark plug threads.
• Apply dielectric grease to coil pack/spark plug wire boot.
• Always tighten to manufacturer's recommended torque spec. 

• Coloration: The color of the insulator nose and electrodes can indicate if a engine is operating smoothly or requires some adjustments.

• Deposits: Examining deposits on the spark plug can reveal information about the fuel and oil consumption. Reading an older plug removed from an engine can play a crucial roll in engine health!