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NGK 1643 Spark Plug
| Brand | NGK 1643 |
|---|---|
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Nickel |
| Electrical Terminal Type | Non-Removable Nut |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Standard |
| Hex Size | 5/8 |
| Insulator Height | 50.00 |
| Manufacturer Heat Range | 7 |
| Part Number | LKR7E |
| Pre-Gap Size | .036 |
| Reach | 26.5 |
| Resistance | 5000 |
| Seat Type | Flat |
| Stock Number | 1643 |
| Thread Diameter | 12.00 |
| Product line | Standard Spark Plug |
| Fits | Kia · 2 vehicles |
OE supplier heritage. Built by NGK, a long-time original equipment spark plug manufacturer.
Copper core design. Helps promote reliable ignition performance and consistent operation.
Standard spark plug. A direct-fit replacement for routine ignition service.
Cross-references BENDIX PREMIUM BRAKE SHOES 445, Bosch YR7SES and NGK 1643 for the same application. See all 8.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
NGK 1643 Standard Spark Plug for Kia Soul
NGK 1643 is a standard spark plug built for consistent ignition performance in select applications, including 2010-2011 Kia Soul models. It features a copper center electrode core, nickel center electrode tip, a nickel ground electrode, and a 0.036 in. pre-gap size for OE-style service replacement.
Key Features
- NGK Standard Spark Plug, part number 1643
- Fits 2010-2011 Kia Soul, N/A
- Resistance: 5000 ohms
- Center electrode core material: copper
- Center electrode tip material: nickel
- Ground electrode core material: nickel
- Ground electrode quantity: 1
- Pre-gap size: 0.036 in.
- Thread diameter: 12.00 mm
- Reach: 26.5 mm
- Hex size: 5/8 in.
- Flat seat design with non-removable nut terminal
Product Details
The NGK Standard Spark Plug line is built around OE-style service replacement needs, with NGK’s long history as a major original equipment supplier for domestic and import vehicles in North America. Part number 1643 uses a copper core for efficient heat transfer and nickel electrode materials for dependable spark delivery in everyday driving conditions. This spark plug is listed for 2010-2011 Kia Soul applications and is also identified by NGK LKR7E.
This part cross-references Bosch YR7SES for the same application.
Common Issues It May Address
- Hard starting caused by worn or fouled spark plugs
- Rough idle from inconsistent ignition firing
- Misfire conditions related to degraded plug electrodes
- Reduced throttle response from weak spark delivery
- Service interval replacement on 2010-2011 Kia Soul ignition maintenance
Installation Notes and Tips
Verify the thread diameter, reach, seat type, and pre-gap before installation. For 2010-2011 Kia Soul service, confirm the OE-equivalent gap specification in the vehicle service information and inspect ignition components for wear before installing NGK 1643. Use proper spark plug socket tools and torque to the manufacturer specification.
Quality Assurance
NGK manufactures spark plugs for a wide range of automotive applications and supplies original equipment components for many domestic and import vehicles. Part number 1643 is produced to support OE-style durability and operational performance standards.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Kia | Soul | 1.6L | L4 | N/A | Gap 0.032" OE Equivalent Design 30,000 mi OE Mfr Recommended Service Interval; Standard Spark Plug |
| 2010 | Kia | Soul | 1.6L | L4 | N/A | Gap 0.032" OE Equivalent Design 30,000 mi OE Mfr Recommended Service Interval; Standard Spark Plug |
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