FuelTech NGK Racing Spark Plug R5671A-9 - 5016100679
Built for Extreme Racing Conditions and Maximum Performance
The FuelTech NGK Racing Spark Plug R5671A-9 is engineered for high-revving, high-compression racing engines where reliability and consistency are critical. Designed to withstand extreme combustion conditions, this plug delivers dependable ignition performance in the most demanding motorsports environments.
Featuring a nickel alloy center electrode with a V-groove design, this spark plug ensures consistent spark development and efficient combustion across a wide range of racing applications.
Superior Heat Dissipation and Conductivity
The solid copper core design provides exceptional thermal performance, helping maintain optimal operating temperatures under extreme load.
- 98% pure copper core for superior heat dissipation
- Improves conductivity for strong, consistent spark
- Supports ultra-wide heat range operation
- Ideal for high-performance racing engines
Durable Construction for Reliability Under Load
Built with NGKs advanced materials and manufacturing processes, this plug is designed for durability and long-term performance in harsh racing environments.
- High-grade alumina silicate ceramic insulator
- Enhanced dielectric strength for reliable ignition
- Cold-rolled threads reduce risk of cross-threading
- Trivalent metal plating for corrosion resistance and anti-seize protection
Designed for Competitive Motorsport Applications
Trusted by racers worldwide, the R5671A-9 is proven in a wide range of competitive environments where engine performance and reliability are non-negotiable.
- Used in professional racing applications globally
- Designed for high RPM and high compression engines
- Delivers consistent ignition under extreme conditions
- Proven performance in motorsports environments
Features
- NGK Racing spark plug R5671A-9
- Solid copper core for heat dissipation and conductivity
- Nickel alloy center electrode with V-groove design
- High-strength ceramic insulator
- Cold-rolled threads for safe installation
- Corrosion-resistant trivalent metal plating
Quick Specs
- Brand: FuelTech / NGK
- Product Type: Racing Spark Plug
- Model: R5671A-9
- Core Material: Copper
- Electrode Material: Nickel alloy
- Heat Range: 9
- Thread Size: M14
- Thread Reach: 0.750" (19mm)
- Hex Size: 5/8"
- Preset Gap: 0.032" (0.80mm)
- Resistor: No
- Ground Electrode: Single nickel electrode
- Insulator Height: 50mm
- Terminal Type: Non-removable nut
- Part Number: 5016100679
FAQs
What type of engines is this spark plug designed for?
This spark plug is designed for high-revving, high-compression racing engines operating under extreme conditions.
What does the heat range of 9 indicate?
A heat range of 9 indicates a colder plug, which is ideal for high-performance engines that generate more heat and require better thermal control.
Why Buy from Beefcake Racing?
Beefcake Racing is your trusted source for FuelTech ignition components and performance parts. We provide proven solutions for racers who demand reliability and performance.
From spark plugs to complete engine management systems, we offer expert support, fast shipping, and real-world racing experience to help you stay ahead of the competition.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

