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NTKPart #: 25041
NTK 25041 Oxygen Sensor - Upstream, Upstream Left or Upstream Right
⚙️ 27 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$39.98Free 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
📦Direct Fit Oxygen Sensor, Upstream, Upstream Right, and Upstream Left
🚗Fitment: BMW, 318i, 318is, 318ti, 325i, 325is, 530i, 540i, 840Ci, and M3
🔄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 Oxygen Sensor options
NTK 25041 Oxygen Sensor - Upstream, Upstream Left or Upstream Right
| Brand | NTK |
| Part Number | 25041 |
| Position | Direct Fit Oxygen Sensor, Upstream, Upstream Right, and Upstream Left |
| Wiring Harness Length | 20.0000 |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Thread Diameter | 18.000 |
| Mounting Type | Threaded |
This part fits 27 vehicles. Search below:
| Year | Make | Model | Body Type | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 1995 | BMW | 318i | 1.8L | L4 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | ||
| 1995 | BMW | 318is | 1.8L | L4 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | ||
| 1995 | BMW | 318ti | 1.8L | L4 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | ||
| 1995 | BMW | 325i | Manual | 2.5L | L6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | |
| 1995 | BMW | 325is | Manual | 2.5L | L6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | |
| 1995 | BMW | M3 | Manual | 3.0L | L6 | Upstream | Cyls. 4-6; B2S1; OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1995 | BMW | M3 | Manual | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1994 | BMW | 318i | 1.8L | L4 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | ||
| 1994 | BMW | 318is | 1.8L | L4 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | ||
| 1994 | BMW | 325i | Manual | 2.5L | L6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | |
| 1994 | BMW | 325is | Manual | 2.5L | L6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | |
| 1994 | BMW | 530i | Manual | 3.0L | V8 | Upstream Right | B1S1; To 6/94; OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1994 | BMW | 530i | Manual | 3.0L | V8 | Upstream Left | B2S1; To 6/94; OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1994 | BMW | 540i | Manual | 4.0L | V8 | Upstream Right | To 3/94; OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1994 | BMW | 540i | Manual | 4.0L | V8 | Upstream Left | To 3/94; OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1994 | BMW | 840Ci | 4.0L | V8 | Upstream Right | To 5/94; OE Equivalent Design; Direct Fit Oxygen Sensor | ||
| 1994 | BMW | 840Ci | 4.0L | V8 | Upstream Left | To 5/94; OE Equivalent Design; Direct Fit Oxygen Sensor | ||
| 1994 | BMW | M3 | Manual | 3.0L | L6 | Upstream | Cyls. 4-6; B2S1; OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1994 | BMW | M3 | Manual | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1993 | BMW | 318i | 1.8L | L4 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | ||
| 1993 | BMW | 318is | 1.8L | L4 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | ||
| 1993 | BMW | 325i | Manual | 2.5L | L6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | |
| 1993 | BMW | 325is | Manual | 2.5L | L6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | |
| 1992 | BMW | 318i | Sedan | 1.8L | L4 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | |
| 1992 | BMW | 318is | Coupe | 1.8L | L4 | Upstream | B1S1; From 9/92; OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1992 | BMW | 325i | Manual | 2.5L | L6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor | |
| 1992 | BMW | 325is | Manual | 2.5L | L6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 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:
11781247235117817354991178174109211781741666117817475791323113310213-1471213-583234-4670234-4671234-4676ES10290ES10361OS5014OS585OS603OS642OS665SG122SG123
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.