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NGK 2399 Spark Plug
| Brand | NGK 2399 |
|---|---|
| Resistance | 1 |
| Ground Electrode Tip Design | Standard |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Nickel |
| Pre-Gap Size | .028 |
| Ground Electrode Quantity | 1 |
| Hex Size | 13/16 |
| Insulator Height | 55.00 |
| Manufacturer Heat Range | 10 |
| Seat Type | Flat |
| Reach | .5 |
| Thread Diameter | 14.00 |
| Part Number | B10hs |
| Stock Number | 2399 |
| Product line | Standard Spark Plug |
| Fits | Kawasaki · 8 vehicles |
OE-focused design. Built to original-equipment standards for dependable ignition service.
Copper core construction. Copper center electrode core with nickel tips for consistent spark delivery.
Resistor spark plug. 1-resistor design helps control ignition noise in service applications.
Cross-references AMS Automotive 4065, AMS Automotive 4138 and NGK 2399 for the same application. See all 6.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Overview
NGK spark plug 2399 is a standard replacement plug built around OE-style construction and core materials. It is listed for select Kawasaki applications and uses a flat seat, copper center electrode core, and nickel electrode tips for consistent ignition performance.
Fits 1970-1971 Kawasaki F5, N/A. Fits 1970-1971 Kawasaki F5 Big Horn, N/A. Fits 1972-1975 Kawasaki F9, N/A.
Key Features
- Standard spark plug design for routine ignition service
- Copper center electrode core with nickel tip material
- Nickel ground electrode with standard configuration
- 1-resistor design for ignition noise control
- Flat seat, 14 mm thread diameter, and 0.5 in reach
- Removable nut terminal for common ignition lead setups
Detailed Description
NGK 2399, also identified by part number B10HS, is a standard spark plug engineered to match common service requirements for older motorcycle applications. Its 0.028 pre-gap, 13/16 hex size, and standard ground electrode layout support straightforward replacement service, while the copper core and nickel electrode materials are selected for dependable spark delivery. This part number 2399 is listed for Kawasaki F5, Kawasaki F5 Big Horn, and Kawasaki F9 applications, making it a direct reference point when sourcing the correct NGK spark plug 2399 for those models.
NGK’s OE supplier background and long-standing ignition focus are reflected in the product’s original-equipment-oriented construction. For buyers searching for a Kawasaki F5 spark plug, Kawasaki F5 Big Horn spark plug, or Kawasaki F9 spark plug, NGK 2399 provides a specification-driven replacement option with the dimensions and terminal style needed for matching service work.
What It Helps Address
- Hard starting caused by worn or fouled spark plugs
- Weak or inconsistent spark output
- Misfire symptoms related to plug wear
- Service intervals that call for plug replacement
- Ignition noise concerns in resistor-equipped systems
Installation Notes and Tips
Verify the thread diameter, reach, seat type, and terminal style before installation. Set the spark plug gap to the vehicle specification; the fitment notes list 0.040 inches for the listed applications. Confirm the correct heat range and compare the removed plug to the new NGK 2399 before final installation.
Quality Assurance
NGK is a major OE spark plug supplier in North America and manufactures ignition components to original-equipment standards. Part number 2399 reflects that OE-focused approach, with materials and dimensions selected for reliable service in the listed applications.
| Year | Make | Model | Liters | Cylinders | Notes |
|---|---|---|---|---|---|
| 1975 | Kawasaki | F9 | -L | -- | Set spark plug gap to 0.040 inches.; Standard Spark Plug |
| 1974 | Kawasaki | F9 | -L | -- | Set spark plug gap to 0.040 inches.; Standard Spark Plug |
| 1973 | Kawasaki | F9 | -L | -- | Set spark plug gap to 0.040 inches.; Standard Spark Plug |
| 1972 | Kawasaki | F9 | -L | -- | Set spark plug gap to 0.040 inches.; Standard Spark Plug |
| 1971 | Kawasaki | F5 | -L | -- | Set spark plug gap to 0.040 inches.; Standard Spark Plug |
| 1971 | Kawasaki | F5 Big Horn | -L | -- | Set spark plug gap to 0.040 inches.; Standard Spark Plug |
| 1970 | Kawasaki | F5 | -L | -- | Set spark plug gap to 0.040 inches.; Standard Spark Plug |
| 1970 | Kawasaki | F5 Big Horn | -L | -- | Set spark plug gap to 0.040 inches.; Standard Spark Plug |
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