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NTKPart #: 25530
NTK 25530 Oxygen Sensor - Upstream
⚙️ 3 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$105.02Free 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
🚗Fitment: BMW, 318i and 318is
🔄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 25530 Oxygen Sensor - Upstream
| Brand | NTK |
| Part Number | 25530 |
| Position | Direct Fit Oxygen Sensor, Upstream |
| Wiring Harness Length | 32.5000 |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Thread Diameter | 18.000 |
| Mounting Type | Threaded |
This part fits 3 vehicles. Search below:
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1992 | BMW | 318i | Convertible | 1.8L | L4 | Upstream | B1S1; Sensor w/800mm Length; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1991 | BMW | 318i | 1.8L | L4 | Upstream | B1S1; w/800mm Length; OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 1991 | BMW | 318is | 1.8L | L4 | Upstream | B1S1; w/800mm Length; OE Equivalent Design; 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:
1178172745113109213-1337213-557234-467475-2792ES10346OS654SG501
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.