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Bosch 9780 Spark Plug
| Brand | Bosch 9780 |
|---|---|
| Resistance | 6000 |
| Ground Electrode Tip Design | Standard |
| Ground Configuration | J-gap |
| Ground Electrode Core Material | Copper |
| Electrical Terminal Type | Non-removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Pre-Gap Size | .7 |
| Ground Electrode Quantity | 1 |
| Hex Size | 16 |
| Manufacturer Heat Range | 5 |
| Seat Type | Flat |
| Reach | 26.5 |
| Insulator Material | Ceramic |
| Resistor Type | Yes |
| Ground Electrode Tip Material | Platinum |
| Hex Type | Hex |
| Center Electrode Design | Fine wire |
| 9746 | No |
| Automotive Item Weight (lbs) | 0.09039 lb |
| Insulator Type | Non-projected |
| Outdoor Power Equipment Application | No |
| Package Contents | Spark plug |
| Package Quantity | 1 |
| Product Length | 3.285433 in |
| Product Width | 0.712598 in |
| Resistor | Yes |
| Short Style | No |
| Spark Plug Type | 4-cycle |
| Thread Diameter (Spark Plug) | 12 mm |
| Product line | OE Fine Wire Iridium |
| Fits | Hyundai · 4 vehicles |
OE fine-wire iridium. Delivers OE-style spark plug technology with a fine-wire center electrode.
Iridium center electrode. Built for strong performance and long service life.
Resistor type. Helps reduce electrical noise in the ignition system.
Bosch OE Fine Wire Iridium Spark Plug 9780
Bosch 9780 is an OE Fine Wire Iridium spark plug built for precise ignition performance and extended service life. It is a direct-fit ignition component for the 2017-2020 Hyundai Elantra, with OE-style construction that supports consistent combustion and reliable starting.
OE Fine Wire Iridium Design
- Fine wire iridium center electrode for efficient spark delivery
- Platinum ground electrode tip with a standard J-gap configuration
- Resistor spark plug design with 6000 ohms resistance
- Ceramic insulator and non-projected insulator type
- 12 mm thread diameter, 26.5 mm reach, 16 mm hex size, flat seat
- Manufacturer heat range 5 with a .7 pre-gap size
Detailed Product Overview
The Bosch OE Fine Wire Iridium line focuses on OE-style ignition performance with materials selected for durability and stable spark characteristics. Bosch 9780 uses an iridium center electrode tip and copper core construction to help maintain consistent firing under normal engine demands. For drivers searching for a Bosch 9780 spark plug for Hyundai Elantra 2017-2020, this part matches the listed application and supports factory-style ignition service.
Fits 2017-2020 Hyundai Elantra, N/A. This part number, 9780, is a practical replacement choice when servicing the ignition system on the Hyundai Elantra with OE Fine Wire Iridium specifications.
Common Issues This Spark Plug Can Address
- Hard starting caused by worn spark plug electrodes
- Rough idle from inconsistent ignition firing
- Misfire conditions related to degraded plug performance
- Reduced throttle response from weak spark delivery
- Maintenance replacement for high-mileage ignition service
Installation Notes and Tips
Verify the 12 mm thread diameter, 26.5 mm reach, 16 mm hex size, flat seat, and .7 pre-gap before installation. Use the correct spark plug socket and follow the vehicle manufacturer’s torque specification to avoid thread or insulator damage. Inspect ignition coils and plug wells during service, and confirm the replacement matches the original application for the 2017-2020 Hyundai Elantra.
Quality Assurance
Bosch designs this spark plug as an OE-style ignition component using iridium and platinum electrode materials for durable service and stable performance. Bosch 9780 is built to meet the dimensional and electrical requirements listed for the application.
| Year | Make | Model | Liters | Cylinders | Notes |
|---|---|---|---|---|---|
| 2020 | Hyundai | Elantra | 1.4L | L4 | OE Fine Wire Iridium |
| 2019 | Hyundai | Elantra | 1.4L | L4 | OE Fine Wire Iridium |
| 2018 | Hyundai | Elantra | 1.4L | L4 | OE Fine Wire Iridium |
| 2017 | Hyundai | Elantra | 1.4L | L4 | OE Fine Wire Iridium |
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