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OE Quality
60-Day Returns
BoschPart #: 16615
Bosch 16615 Oxygen Sensor - Upstream
18 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$205.91Free 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 Quality Oxygen Sensor, Upstream
Fitment: Mazda, 6, CX-5, and CX-9
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 Oxygen Sensor options
Bosch 16615 Oxygen Sensor - Upstream
| Brand | Bosch |
|---|---|
| Part Number | 16615 |
| Position | OE Quality Oxygen Sensor, Upstream |
| Wiring Harness Length | 8.3 |
| Terminal Type | Blade |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 5 |
| Grade Type | Standard replacement |
| Connector Shape | Rectangle |
| Terminal Quantity | 6 |
| Connector Gender | Male |
| Terminal Gender | Male |
| Overall Length | 11.8 |
| Mounting Type | Threaded |
| Automotive Color / Finish | Steel |
| Automotive Item Weight (lbs) | 0.019842 lb |
| Heated (Oxygen Sensor) | Yes |
| Hex Size (Oxygen Sensor) | 22 mm |
| Housing Material | Metal |
| Length (Sealing Surface To End Of Connector) | 10.6 in |
| Mounting Bracket Included | No |
| Oxygen Sensor Type | Wide band |
| Sensor Type | Narrow-band |
| Thread Diameter (Oxygen Sensor) | 18 mm |
| Thread Size | 18 |
| Wiring Harness Included | Yes |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2025 | Mazda | CX-5 | 2.5L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2024 | Mazda | CX-5 | 2.5L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2023 | Mazda | CX-5 | 2.5L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2023 | Mazda | CX-9 | 2.5L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2022 | Mazda | CX-5 | 2.5L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2022 | Mazda | CX-9 | 2.5L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2021 | Mazda | 6 | 2.5L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2021 | Mazda | CX-5 | 2.5L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2021 | Mazda | CX-9 | 2.5L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2020 | Mazda | 6 | 2.5L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2020 | Mazda | CX-5 | 2.5L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2020 | Mazda | CX-9 | 2.5L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2019 | Mazda | CX-5 | 2.5L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2019 | Mazda | CX-9 | 2.5L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2018 | Mazda | 6 | 2.5L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2018 | Mazda | CX-9 | 2.5L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2017 | Mazda | CX-9 | 2.5L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2016 | Mazda | CX-9 | 2.5L | L4 | Upstream | Bosch Validated Oxygen Sensor |
* 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:
PY8V188G1
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.