NGK Racing R7420-10 Competition Spark Plug – RX-7 / 13B / 20B
NGK Racing R7420-10 Competition Spark Plug – RX-7 / 13B / 20B
AVAILABILITY & LEAD TIME
In-stock items are normally dispatched promptly. Products not currently in stock may require additional supplier lead time before dispatch.
If you need an item urgently, please contact RSG before ordering to confirm current availability.
NGK R7420-10 Racing Competition Spark Plug
The NGK R7420-10 is part of NGK's dedicated Racing Competition range, developed for engines operating under substantially higher temperatures, cylinder pressures and loads than standard applications.
RACING SPECIFICATION
The R7420-10 uses:
- Heat Range: 10
- Iridium centre electrode
- Platinum ground electrode
- Solid terminal
- Dedicated NGK Racing construction
NGK states that its Racing plugs are intended for racing, circuit use and highly tuned engines, and that heat range should be selected according to the engine specification and operating conditions.
RSG SUPPLIED STOCK: JAPAN SOURCED • MADE IN JAPAN
APPLICATION
Recommended for appropriately specified performance applications including:
- Mazda RX-7
- 13B performance builds
- 13B-REW
- 20B performance builds
- High-boost applications
- Motorsport / competition engines
- Track and drag applications
IMPORTANT – NOT A STANDARD REPLACEMENT PLUG
NGK specifically warns that Racing plug heat range and firing-end design must be selected according to engine tuning level and operating conditions. A plug that is too cold can foul during low-temperature/low-load operation.
Unsure whether your engine requires R7420-10? Contact RSG with your engine specification, power level, fuel and intended use.
Worldwide Shipping Available.
PRODUCT SPECIFICATIONS
Manufacturer: NGK
Part Number: R7420-10-5501
Condition: New
Country of Origin: Japan
RETURNS & REFUNDS
Returns are accepted in accordance with our Returns & Refund Policy.
Items must meet the applicable return conditions.
Please contact Rotary Secret Garage before returning any item.
SHIPPING & DELIVERY
Worldwide shipping with FedEx.
Rotary Secret Garage ships international orders using FedEx tracked courier services, providing reliable door-to-door delivery and shipment tracking.
Orders outside the European Union are shipped by FedEx Express.
Available shipping services and costs are calculated at checkout.
DUTIES & IMPORT TAXES
Orders shipped outside the European Union may be subject to import duties, taxes and customs fees imposed by the destination country.
These charges are the responsibility of the recipient and are not included in the product price or shipping cost, unless explicitly stated otherwise.
PARTS & FITMENT
Compatible Vehicle / Engine:
Please verify the vehicle application and part number before ordering.
If you are unsure whether a part is suitable for your vehicle, engine or specific setup, contact Rotary Secret Garage before placing your order.
RSG can assist with product selection and compatibility for parts supplied through our store.
PRODUCT SUPPORT
Technical product support is available from Rotary Secret Garage for parts supplied through our store.
If you need assistance with product selection, installation or application, contact RSG and include your order number and relevant vehicle, engine or setup details.