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OE Quality
60-Day Returns
DensoPart #: 234-5742
Denso 234-5742 Air / Fuel Ratio Sensor - Upstream or Upstream Right
⚙️ 104 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$178.38Free 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
📦Air / Fuel Ratio Sensor - OE Style, Upstream and Upstream Right
🚗Fitment: BMW, 335i, 335i xDrive, 435i, 435i Gran Coupe, 435i xDrive, 435i xDrive Gran Coupe, 535i, 535i GT, 535i GT xDrive, 535i xDrive, 640i, 640i Gran Coupe, 640i xDrive, 640i xDrive Gran Coupe, ActiveHybrid 3, ActiveHybrid 5, M2, M235i, M235i xDrive, M3, M4, X4, X5, and X6
🔄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? Click here for all Air / Fuel Ratio Sensor options
Denso 234-5742 Air / Fuel Ratio Sensor - Upstream or Upstream Right
| Brand | Denso |
| Part Number | 234-5742 |
| Position | Air / Fuel Ratio Sensor - OE Style, Upstream and Upstream Right |
| Wiring Harness Length | 18.50 |
| Sensor Type | Wide-band |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 5 |
| Grade Type | Standard replacement |
| Connector Gender | Male |
This part fits 104 vehicles. Search below:
| Year | Make | Model | Submodel | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2021 | BMW | M2 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2020 | BMW | M2 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2020 | BMW | M4 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2019 | BMW | 640i Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2019 | BMW | 640i xDrive Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2019 | BMW | M2 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2019 | BMW | M4 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2019 | BMW | X6 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2018 | BMW | 640i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2018 | BMW | 640i Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2018 | BMW | 640i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2018 | BMW | 640i xDrive Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2018 | BMW | M2 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2018 | BMW | M3 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2018 | BMW | M4 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2018 | BMW | X4 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2018 | BMW | X5 | GAS | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | |
| 2018 | BMW | X6 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | 535i GT | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | 535i GT xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | 640i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | 640i Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | 640i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | 640i xDrive Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | M2 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | M3 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | M4 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2017 | BMW | X4 | M40i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | |
| 2017 | BMW | X5 | GAS | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | |
| 2017 | BMW | X6 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 435i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 435i Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 435i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 435i xDrive Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 535i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 535i GT | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 535i GT xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 535i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 640i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 640i Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 640i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | 640i xDrive Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | ActiveHybrid 5 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | M2 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | M235i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | M235i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | M3 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | M4 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | X4 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2016 | BMW | X5 | GAS | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | |
| 2016 | BMW | X6 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 435i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 435i Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 435i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 435i xDrive Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 535i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 535i GT | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 535i GT xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 535i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 640i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 640i Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 640i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | 640i xDrive Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | ActiveHybrid 5 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | M235i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | M235i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | M3 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | M4 | Upstream Right | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2015 | BMW | X5 | GAS | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | |
| 2015 | BMW | X6 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 335i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 335i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 435i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 435i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 535i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 535i GT | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 535i GT xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 535i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 640i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 640i xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | 640i xDrive Gran Coupe | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | ActiveHybrid 3 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | ActiveHybrid 5 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | M235i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2014 | BMW | X5 | GAS | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | |
| 2014 | BMW | X6 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2013 | BMW | 535i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2013 | BMW | 535i GT | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2013 | BMW | 535i GT xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2013 | BMW | ActiveHybrid 5 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2013 | BMW | X5 | GAS | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | |
| 2013 | BMW | X6 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2012 | BMW | 535i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2012 | BMW | 535i GT | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2012 | BMW | 535i GT xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2012 | BMW | ActiveHybrid 5 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2012 | BMW | X5 | GAS | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | |
| 2012 | BMW | X6 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2011 | BMW | 535i | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2011 | BMW | 535i GT | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2011 | BMW | 535i GT xDrive | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2011 | BMW | X5 | GAS | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | |
| 2011 | BMW | X6 | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style | ||
| 2010 | BMW | 535i GT | Upstream | O.E. Quality Direct Fit Replacement Sensor; Air / Fuel Ratio Sensor - OE Style |
* 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:
117875969081178784848317015234574224364250-25089350-35079
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.