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NGK 6502 Spark Plug
| Brand | NGK 6502 |
|---|---|
| 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 | .044 |
| Ground Electrode Quantity | 1 |
| Hex Size | 5/8 |
| Insulator Height | 50.50 |
| Manufacturer Heat Range | 5 |
| Seat Type | Flat |
| Reach | .75 |
| Thread Diameter | 14.00 |
| Part Number | Ifr5l11 |
| Stock Number | 6502 |
| Fits | — |
Laser iridium design. Iridium tip and copper core deliver precise ignition performance.
OE supplier heritage. Built by NGK, a long-time original equipment spark plug manufacturer.
Standard spark plug. Flat seat and non-removable nut for a straightforward replacement fit.
Cross-references AMS Automotive 6502 and 98079-5517U for the same application. See all 2.
NGK Laser Iridium Spark Plug 6502
NGK Laser Iridium Spark Plug 6502 is built for drivers who want OE-style ignition performance with precise electrode construction. This spark plug uses an iridium center electrode tip, a nickel ground electrode core, and a flat seat design to support consistent combustion in the correct application.
Key Features
- Laser Iridium spark plug from NGK
- Part number 6502, also identified as IFR5L11
- Iridium center electrode tip material for stable spark delivery
- Copper center electrode core and nickel ground electrode core
- Pre-gapped to .044 for the specified application
- 5 k? resistance for ignition system noise control
- Standard ground configuration with a taper-cut ground electrode tip
- 14 mm thread diameter, .75 reach, 5/8 hex, flat seat
Product Details
NGK’s Laser Iridium line is positioned for precise ignition performance and OE-level manufacturing standards. Part number 6502 combines an iridium tip with a copper core center electrode and a nickel ground electrode to support reliable spark characteristics in the intended engine setup. The flat seat, .044 pre-gap, and 14 mm thread specification make this a direct-spec spark plug for the correct vehicle application. This part cross-references AMS Automotive 6502 for the same application.
Common Issues This Spark Plug Can Address
- Misfire caused by worn or fouled spark plugs
- Hard starting related to weak ignition output
- Rough idle from inconsistent spark delivery
- Reduced throttle response from degraded plug performance
- Maintenance replacement for vehicles calling for NGK IFR5L11 / 6502
Installation Notes
Verify the engine’s required thread diameter, reach, seat type, and pre-gap before installation. Use the specified gap and torque procedure for the vehicle, and inspect ignition coils, boots, and wires during service. For fitment-based searches, this spark plug is commonly referenced for NGK 6502 applications and NGK IFR5L11 replacement needs on the correct make/model listing.
Quality Assurance
NGK is a long-established OE spark plug supplier with broad coverage across domestic and import vehicles in North America. Its manufacturing and distribution network supports consistent product standards for ignition service parts, including applications such as Honda Civic and Toyota Corolla where the correct plug specification is critical.
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