NGK 95605 LTR7BHX Ruthenium HX Spark Plugs
Available in Sets of 4 or 6
 
The NGK 95605 LTR7BHX spark plug features NGK’s Ruthenium HX technology, engineered for modern high‑output engines that demand strong ignitability, consistent combustion, and long service life. These plugs are a proven choice for Ford and Lincoln EcoBoost platforms, particularly in tuned and higher‑boost applications.
 
✅ Check out our Spark Plug Package with Gap Tool and Feeler Gauges
✅ We strongly recommend confirming your plug gap with a feeler gauge before installation 
✅ Pre‑gapped options are available at checkout under “Tuner Recommended Gap” or any of the specified gaps.
 
🎥 How to Gap Spark Plugs:
See our step‑by‑step video on YouTube 
 
📦 Shipping & Lead Time
Spark plugs ship directly from ZFG Racing
Lead times vary based on demand and gapping selection
Pre‑gapped plugs typically ship within ~10 business days once in stock
 
Key Features & Benefits
Ruthenium HX Fine‑Wire Center Electrode (0.6mm):
Enhances ignitability and combustion stability across a wide range of air‑fuel ratios
Projected Square Platinum Ground Electrode:
Concentrates spark energy for improved performance in both rich and lean conditions
Platinum‑Enhanced Trivalent Metal Coating:
Superior corrosion resistance and anti‑seize properties
Copper Core Construction:
Efficient heat dissipation for consistent performance under load
Corrugated Ceramic Ribs & Pure Alumina Insulator:
Prevent flashover while providing excellent strength and heat transfer
 
Plug Gapping & Fitment Notes
Standard Gap: 0.031" (0.8mm)
Typical ZFG‑Recommended Gap for EcoBoost Applications: 0.028"
Final gap recommendation varies by vehicle, boost, fuel type, and tuning strategy
 
📩 To confirm the exact recommended gap for your setup, please email us your build details and any previous ZFG order number(s): Sales@tunedbyzfgracing.com
 
Technical Specifications
Shell
Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Tapered
Reach: 25mm (1")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Electrodes
Center Electrode Material: Ruthenium
Center Electrode Type: Fine Wire (0.6mm)
Ground Electrode Material: Platinum
Ground Electrode Type: Projected Square
Electrical & Heat
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 7
Torque Specifications
Cast Iron Heads: 10.8–18 lb‑ft
Aluminum Heads: 7.2–14.5 lb‑ft
Additional Information
Brand: NGK / NTK
Warranty: 1 Year
Expected Service Life: ~60,000–120,000 miles (application‑dependent)
 
Optional Add‑On: ZFG Spark Plug Gapping Package
The ZFG Spark Plug Package includes the specialized tools needed to:
Measure plug gap
Correct gap safely
Verify consistency before installation
This package may be purchased with or without spark plugs and is ideal for DIY installers or shops wanting repeatable results.