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Bosch FR7SI30 Spark Plug
| Brand | Bosch FR7SI30 |
|---|---|
| Center Electrode Core Material | Nickel-Yttrium and Copper |
| Center Electrode Tip Material | Platinum-Iridium |
| Ground Configuration | Standard |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Standard |
| Ground Electrode Tip Material | Nickel-Yttrium |
| Hex Size | 16 |
| Insulator Material | Ceramic |
| Insulator Type | Projected |
| Manufacturer Heat Range | 7 |
| Outdoor Power Equipment Application | No |
| Package Contents | Spark Plug |
| Pre-Gap Size | 1.1 |
| Product Length | 3.346457 in |
| Product Width | 0.748031 in |
| Reach | 26.5 |
| Resistance | 6000 |
| Resistor | Yes |
| Seat Type | Flat |
| Short Style | No |
| Spark Plug Type | 4-Cycle |
| Thread Diameter | 14 |
| Product line | OE Fine Wire Iridium |
| Fits | Mitsubishi · 10 vehicles |
OE fine-wire design. Iridium center electrode delivers strong performance and long service life.
Platinum-iridium tip. Helps maintain consistent ignition performance over time.
Ceramic insulator. Projected design supports efficient spark delivery.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Bosch OE Fine Wire Iridium Spark Plug
The Bosch FR7SI30 is an OE Fine Wire Iridium spark plug built for precise ignition performance and long service life. It uses an ultra-fine iridium center electrode firing pin to promote consistent spark delivery in engines that call for this OE-style design.
Compatible With 2014-2015 Mitsubishi Mirage and 2017-2020 Mitsubishi Mirage, as well as 2017-2020 Mitsubishi Mirage G4, this Bosch spark plug is a direct-fit secondary ignition service part for the listed applications. The FR7SI30 is also a resistor-type, 4-cycle spark plug with a preset 1.1 mm gap, so it should be installed as supplied.
Key Features
- OE Fine Wire Iridium design for OE-style ignition performance
- Ultra-fine iridium center electrode firing pin for consistent spark delivery
- Preset 1.1 mm gap; do not gap before installation
- Resistor spark plug with 6000 resistance
- Flat seat, projected insulator, and standard ground configuration
- 14 mm thread diameter, 26.5 mm reach, and 16 mm hex size
- Platinum-iridium center electrode tip with nickel-yttrium ground electrode tip
Product Details
Bosch FR7SI30 is engineered around OE spark plug technology for drivers who need the correct ignition component for specific Mitsubishi Mirage and Mirage G4 applications. The plug features a ceramic insulator, nickel-yttrium and copper center electrode core material, and a single ground electrode arrangement. Its heat range 7 specification and projected insulator type support the factory-style fit and operating characteristics required by the listed vehicles. Search terms such as Bosch FR7SI30 spark plug for 2014-2015 Mitsubishi Mirage and Bosch FR7SI30 for 2017-2020 Mitsubishi Mirage G4 reflect the exact fitment coverage for this part.
This part cross-references Bosch FR7SI30 for the same application.
Common Issues This Part May Address
- Rough idle caused by worn spark plug electrodes
- Hard starting from degraded ignition performance
- Misfire conditions related to aged plugs
- Reduced throttle response from inconsistent spark delivery
- Service intervals due for OE-style spark plug replacement
Installation Notes and Tips
Install the FR7SI30 only in the vehicles listed above. The gap is preset, so do not adjust it before installation. Verify the engine calls for a flat-seat, 14 mm thread, 26.5 mm reach spark plug with the specified heat range and resistor design before service. Use proper torque procedures and follow the vehicle manufacturer’s ignition service specifications.
Quality Assurance
Bosch designs the OE Fine Wire Iridium line to deliver OE-level ignition performance and extended service life in the applications it was engineered for. The FR7SI30 follows Bosch’s factory-style spark plug construction for the listed Mitsubishi Mirage and Mirage G4 fitments.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2020 | Mitsubishi | Mirage | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
| 2020 | Mitsubishi | Mirage G4 | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
| 2019 | Mitsubishi | Mirage | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
| 2019 | Mitsubishi | Mirage G4 | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
| 2018 | Mitsubishi | Mirage | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
| 2018 | Mitsubishi | Mirage G4 | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
| 2017 | Mitsubishi | Mirage | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
| 2017 | Mitsubishi | Mirage G4 | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
| 2015 | Mitsubishi | Mirage | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
| 2014 | Mitsubishi | Mirage | 1.2L | L3 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Iridium; OE Fine Wire Iridium |
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