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NGK 5583 Spark Plug
| Brand | NGK 5583 |
|---|---|
| Resistance | 1 |
| Ground Electrode Tip Design | Pin type |
| Ground Configuration | Slant |
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Non-removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Nickel |
| Pre-Gap Size | .024 |
| Ground Electrode Quantity | 1 |
| Hex Size | 13/16 |
| Insulator Height | 55.00 |
| Manufacturer Heat Range | 9 |
| Seat Type | Flat |
| Reach | .75 |
| Thread Diameter | 14.00 |
| Part Number | R6254e-9 |
| Stock Number | 5583 |
| Product line | Racing Spark Plug |
| Fits | Kawasaki · 2 vehicles |
OE-focused engineering. Built by NGK, a major North American spark plug supplier with deep ignition expertise.
Copper core design. Helps maintain stable heat transfer and consistent ignition performance.
Pre-gapped to spec. Set to 0.024 in for a quicker setup on the correct application.
Cross-references Anchor 3149, Anchor 3150 and NGK 5583 for the same application. See all 7.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
NGK Racing Spark Plug 5583
The NGK 5583 is a racing spark plug built around NGK’s OE manufacturing background and long-standing ignition expertise. It uses a copper core center electrode, nickel tip materials, and a pin-type ground electrode for consistent spark delivery in demanding applications.
- Racing spark plug with NGK part number 5583
- Copper core center electrode for stable heat transfer
- Nickel center and ground electrode tip materials
- Pin-type ground electrode with slant configuration
- Flat seat, 14 mm thread diameter, 0.75 in reach
- Pre-gapped to 0.024 in
Product Details
Part number 5583, also identified as R6254E-9, is a performance-oriented spark plug with a 1 ohm resistance value, a non-removable nut terminal, and a 9 heat range. The flat seat and 13/16 in hex size support standard service fitment, while the copper core and nickel construction help maintain reliable ignition characteristics under racing conditions. This NGK spark plug is a direct fit for select Kawasaki KX250 applications, including 1992-1993 Kawasaki KX250 models.
Common Uses
- Restoring ignition performance when the original plug is worn or fouled
- Addressing hard starting caused by an incorrect heat range or gap
- Replacing a plug with damaged electrodes or terminal wear
- Maintaining consistent spark in high-demand racing use
Installation Notes
Verify the specified gap before installation and confirm the heat range, thread diameter, reach, and seat type match the engine requirements. Use the listed fitment for 1992-1993 Kawasaki KX250, and confirm the KX250-J application note before installation. The part number 5583 should be matched to the engine specification, not just the thread size.
Quality Assurance
NGK is a major OE spark plug supplier in North America and manufactures ignition components to original equipment standards. Part number 5583 reflects that OE-focused engineering approach for dependable service in the correct application.
| Year | Make | Model | Liters | Cylinders | Notes |
|---|---|---|---|---|---|
| 1993 | Kawasaki | KX250 | -L | -- | KX250-J; Gap 0.024"; Racing Spark Plug |
| 1992 | Kawasaki | KX250 | -L | -- | KX250-J; Gap 0.024"; Racing Spark Plug |
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