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OE Quality
60-Day Returns
DensoPart #: 3515
Denso 3515 Spark Plug
22 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$31.70Free Shipping
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*Free return shipping only qualifies if our fitment verification tool is used.
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Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Spark Plug - Iridium Long Life (SIP)
Fitment: Lexus, GS F, IS500, LC500, and RC F
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
Denso 3515 Spark Plug
| Brand | Denso |
|---|---|
| Part Number | 3515 |
| Position | Spark Plug - Iridium Long Life (SIP) |
| Resistance | 5000 |
| Ground Electrode Tip Design | Platinum needle |
| Ground Configuration | Needle-to-needle |
| Ground Electrode Core Material | Nickel |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Pre-Gap Size | 0.8 |
| Ground Electrode Quantity | 3 |
| Hex Size | 16.0 |
| Manufacturer Heat Range | 20 |
| Seat Type | Flat |
| Reach | 26.50 |
| Thread Diameter | 14.00 |
This part fits 22 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2023 | Lexus | IS500 | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2023 | Lexus | LC500 | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2023 | Lexus | RC F | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2022 | Lexus | IS500 | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2022 | Lexus | LC500 | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2022 | Lexus | RC F | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2021 | Lexus | LC500 | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2021 | Lexus | RC F | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2020 | Lexus | GS F | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2020 | Lexus | LC500 | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2020 | Lexus | RC F | N/A | OE; Spark Plug - Iridium Long Life (SIP) |
| 2019 | Lexus | GS F | N/A | Iridium Long Life (SIP) |
| 2019 | Lexus | LC500 | N/A | Iridium Long Life (SIP) |
| 2019 | Lexus | RC F | N/A | Iridium Long Life (SIP) |
| 2018 | Lexus | GS F | N/A | Iridium Long Life (SIP) |
| 2018 | Lexus | LC500 | N/A | Iridium Long Life (SIP) |
| 2018 | Lexus | RC F | N/A | Iridium Long Life (SIP) |
| 2017 | Lexus | GS F | N/A | Iridium Long Life (SIP) |
| 2017 | Lexus | RC F | N/A | Iridium Long Life (SIP) |
| 2016 | Lexus | GS F | N/A | Iridium Long Life (SIP) |
| 2016 | Lexus | RC F | N/A | Iridium Long Life (SIP) |
| 2015 | Lexus | RC F | N/A | Iridium Long Life (SIP) |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
FK20HBR-J8
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.