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OE Quality
60-Day Returns
BoschPart #: 9779
Bosch 9779 Spark Plug
32 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$23.54Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
OE Fine Wire Iridium
Fitment: Subaru, Crosstrek, Forester, Impreza, Legacy, and Outback
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? See all Spark Plug options
Bosch 9779 Spark Plug
| Brand | Bosch |
|---|---|
| Part Number | 9779 |
| Position | OE Fine Wire Iridium |
| 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 | 14 |
| Manufacturer Heat Range | 7 |
| 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) | 0.083776 lb |
| Insulator Type | Projected |
| Outdoor Power Equipment Application | No |
| Package Contents | Spark plug |
| Package Quantity | 1 |
| Product Length | 3.320866 in |
| Product Width | 0.669291 in |
| Resistor | Yes |
| Short Style | No |
| Spark Plug Type | 4-cycle |
| Thread Diameter (Spark Plug) | 12 mm |
This part fits 32 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2026 | Subaru | Crosstrek | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2026 | Subaru | Forester | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2026 | Subaru | Impreza | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2026 | Subaru | Outback | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2025 | Subaru | Crosstrek | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2025 | Subaru | Forester | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2025 | Subaru | Impreza | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2025 | Subaru | Legacy | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2025 | Subaru | Outback | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2023 | Subaru | Crosstrek | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2023 | Subaru | Forester | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2023 | Subaru | Impreza | 2.0L | H4 | N/A | OE Fine Wire Iridium | |
| 2023 | Subaru | Legacy | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2023 | Subaru | Outback | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2022 | Subaru | Crosstrek | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2022 | Subaru | Forester | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2022 | Subaru | Impreza | 2.0L | H4 | N/A | OE Fine Wire Iridium | |
| 2022 | Subaru | Legacy | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2022 | Subaru | Outback | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2021 | Subaru | Crosstrek | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2021 | Subaru | Forester | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2020 | Subaru | Crosstrek | 2.0L | H4 | GAS | N/A | OE Fine Wire Iridium |
| 2020 | Subaru | Forester | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2020 | Subaru | Impreza | 2.0L | H4 | N/A | OE Fine Wire Iridium | |
| 2020 | Subaru | Legacy | 2.4L | H4 | N/A | OE Fine Wire Iridium | |
| 2020 | Subaru | Outback | 2.4L | H4 | N/A | OE Fine Wire Iridium | |
| 2019 | Subaru | Crosstrek | 2.0L | H4 | GAS | N/A | OE Fine Wire Iridium |
| 2019 | Subaru | Forester | 2.5L | H4 | N/A | OE Fine Wire Iridium | |
| 2019 | Subaru | Impreza | 2.0L | H4 | N/A | OE Fine Wire Iridium | |
| 2018 | Subaru | Crosstrek | 2.0L | H4 | N/A | OE Fine Wire Iridium | |
| 2018 | Subaru | Impreza | 2.0L | H4 | N/A | OE Fine Wire Iridium | |
| 2017 | Subaru | Impreza | 2.0L | H4 | N/A | OE Fine Wire Iridium |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.