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NGK 4897 Spark Plug
| Brand | NGK 4897 |
|---|---|
| Resistance | 5000 |
| Ground Electrode Tip Design | Taper cut |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Non-removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Pre-Gap Size | .028 |
| Ground Electrode Quantity | 1 |
| Hex Size | 5/8 |
| Insulator Height | 53.00 |
| Manufacturer Heat Range | 10 |
| Seat Type | Flat |
| Reach | .75 |
| Thread Diameter | 14.00 |
| Part Number | R7435-10 |
| Stock Number | 4897 |
| Product line | Racing Spark Plug |
| Fits | KTM · 4 vehicles |
Iridium tip. Promotes stable spark delivery in demanding ignition applications.
Copper core. Helps transfer heat efficiently for consistent plug performance.
OE supplier heritage. NGK brings decades of ignition manufacturing experience to this plug.
Cross-references AMS Automotive 4051, AMS Automotive 4897 and DENSO Auto Parts 5323 for the same application. See all 6.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Racing Spark Plug Overview
NGK 4897 is a racing spark plug built with an iridium center electrode tip, a copper core, and a nickel ground electrode. It uses a 5,000 ohm resistor, a flat seat, and a 14 mm thread for a precise ignition setup.
Fits 1998-2001 KTM 65 SX, N/A. This NGK spark plug 4897 is listed for the KTM 65 SX with a 0.024-inch gap note in the fitment data.
Key Features
- Iridium center electrode tip for consistent spark delivery.
- Copper core construction for efficient heat transfer.
- Taper-cut ground electrode design with a standard ground configuration.
- 5,000 ohm resistance and a non-removable nut terminal.
- Flat seat, 14 mm thread diameter, and .75 reach.
Detailed Description
NGK 4897, also identified by part number R7435-10, is part of NGK's Racing Spark Plug line. The design combines an iridium center electrode tip with a copper core and nickel ground electrode to support stable ignition performance in demanding applications. The 5,000 ohm resistor helps control electrical noise, while the flat seat and 14 mm thread support proper cylinder head fitment where specified.
NGK's OE supplier background and long-standing ignition expertise are reflected in this spark plug's construction and specification set. For buyers searching for NGK 4897, R7435-10, or a racing spark plug for a KTM 65 SX, this part provides a direct specification match to the listed application.
What It Is Used For
- Replacing a worn or fouled spark plug.
- Restoring consistent ignition spark.
- Addressing misfire or hard-start conditions tied to plug wear.
- Maintaining proper ignition performance in a racing application.
Installation Notes and Tips
Verify the listed fitment before installation. Confirm the specified gap, thread diameter, seat type, and reach match the engine requirements. Use the part number 4897 or R7435-10 when cross-checking catalog data for the correct NGK spark plug application.
Quality Assurance
NGK is a major OE spark plug supplier in North America and manufactures ignition components to original equipment standards. Part number 4897 reflects NGK's established manufacturing and distribution network for automotive ignition products.
| Year | Make | Model | Liters | Cylinders | Notes |
|---|---|---|---|---|---|
| 2001 | KTM | 65 SX | -L | -- | Spark Plug Gap: 0.024 inches; Racing Spark Plug |
| 2000 | KTM | 65 SX | -L | -- | Spark Plug Gap: 0.024 inches; Racing Spark Plug |
| 1999 | KTM | 65 SX | -L | -- | Spark Plug Gap: 0.024 inches; Racing Spark Plug |
| 1998 | KTM | 65 SX | -L | -- | Spark Plug Gap: 0.024 inches; Racing Spark Plug |
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