Car Oxygen Sensor 12573721/12586996/8125737210/8125869960 For GM/Chevrolet/Saab/Isuzu/Buick/Cadillac
Price:
To Be Negotiated
MOQ:
50
Delivery Time:
1-4weeks
Brand:
RMOS
Product Description
Product Specifications
| Specification | Details |
|---|---|
| Product Type | Lambda Sensor (Oxygen / O₂ Sensor) |
| OE Part Number | 12573721 (also 12 573 721) |
| ACDelco / GM Part Number | 213-1570 |
| Sensor Type | Heated, switching-type oxygen sensor |
| Fitting Position | Upstream (Front / Before Catalytic Converter / Position 1) |
| Number of Wires | 4 |
| Wire Gauge | 20 GA |
| Connector Shape | Triangular |
| Connector Gender | Male |
| Wire Harness Length | 16.920″ (430.00 mm) |
| Overall Length | 20.25″ (514.5 mm) |
| Thread Diameter | 0.71″ (18 mm / M18 * 1.5) |
| Voltage | 12 V |
| Programming Required | No |
| Weight | 0.22 lb (approx. 0.10 kg) |
| Quality Standard | GM OE (manufactured to GM's original equipment specifications) |
| Recommended Replacement Interval | 160,000 km (100,000 miles) |
Technical Notes:
- This is a 4-wire heated oxygen sensor, manufactured to General Motors' original equipment standards. The four wires serve two independent circuits — two for the internal heater and two for the sensor signal and ground.
- The built-in heating element brings the ceramic sensing tip up to operating temperature quickly after a cold start, enabling the ECU to enter closed-loop fuel control sooner and reduce cold-start emissions.
- The sensor measures oxygen content in exhaust gases. The Powertrain Control Module (PCM) uses this input to adjust the air/fuel ratio to near the optimal value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized.
- This sensor is a direct-fit component featuring a GM-specific triangular male connector and pre-terminated wiring, eliminating the need for cutting or splicing during installation.
- As an upstream (pre-catalyst) sensor, it is installed before the catalytic converter (Position 1) and serves as the primary regulating probe for air-fuel mixture control.
- The threads are factory pre-greased with anti-seize compound to prevent seizing in the exhaust bung.
Specification data compiled from CARiD, Summit Racing, Vivid Racing, Spareto, and Trodo catalogues.
Cross-Reference & Interchange Numbers
This Lambda Sensor is a genuine GM / ACDelco Original Equipment component. The following OE numbers are directly interchangeable. Always verify physical fitment (connector shape, cable length and thread size) with your original part before purchasing.
| Manufacturer / Brand | OE Part Number(s) |
|---|---|
| GENERAL MOTORS | 12573721, 12 573 721 |
| ACDelco | 213-1570, 2131570 |
| CHEVROLET | 12573721 |
| GMC | 12573721 |
| SAAB | 12573721, 12586996 |
| ISUZU | 8125869960 |
| BUICK | 12573721 |
Cross-Reference Notes:
- The primary OE number is 12573721, with 213-1570 being the ACDelco aftermarket reference for the same physical sensor.
- For Saab vehicles, the equivalent OE numbers include 12573721 and 12586996.
- For Isuzu vehicles, the equivalent OE number is 8125869960.
- This sensor is also cross-referenced with Standard Motor Products SG1414 and Walker Products 250-24654.
- Always physically compare your old sensor's connector shape (triangular, male), pin count (4), cable length (approx. 430 mm), and thread size (M18 * 1.5) before purchasing.
Cross-reference data compiled from Spareto, Gasgoo, PartsHawk, and AM Autoparts catalogues.
Vehicle Compatibility & Fitment Guide
This is an upstream (pre-catalyst / front) oxygen sensor — installed before the catalytic converter (Position 1). Do not use it in the downstream (post-catalyst) position unless your vehicle's original sensor was located there. Upstream and downstream O₂ sensors are not interchangeable on most vehicles.
Chevrolet
| Model | Chassis / Generation | Year Range | Engine / Notes |
|---|---|---|---|
| Colorado | GMT355 | 2004 – 2005 | 2.8L L4, 3.5L L5. Upstream (front / Position 1) |
| Corvette | C5 / C6 | 2004 – 2009 | 5.7L V8, 6.0L V8, 6.2L V8 |
| Trailblazer | GMT360 | 2004 – 2005 | 4.2L L6. Upstream (front / Position 1) |
| Trailblazer EXT | GMT360 | 2004 – 2005 | 4.2L L6. Upstream (front / Position 1) |
GMC
| Model | Chassis / Generation | Year Range | Engine / Notes |
|---|---|---|---|
| Canyon | GMT355 | 2004 – 2005 | 2.8L L4, 3.5L L5. Upstream (front / Position 1) |
| Envoy | GMT360 | 2004 – 2005 | 4.2L L6. Upstream (front / Position 1) |
| Envoy XL | GMT360 | 2004 – 2005 | 4.2L L6. Upstream (front / Position 1) |
| Envoy XUV | GMT360 | 2004 – 2005 | 4.2L L6. Upstream (front / Position 1) |
Buick
| Model | Chassis / Generation | Year Range | Engine / Notes |
|---|---|---|---|
| Rainier | GMT360 | 2004 – 2005 | 4.2L L6. Upstream (front / Position 1) |
Cadillac
| Model | Chassis / Generation | Year Range | Engine / Notes |
|---|---|---|---|
| CTS | — | 2004 – 2009 | 8 Cyl 5.7L, 6.0L, 6.2L |
| Deville | — | 2004 – 2005 | 8 Cyl 4.6L |
| Seville | — | 2004 – 2005 | 8 Cyl 4.6L |
Pontiac
| Model | Chassis / Generation | Year Range | Engine / Notes |
|---|---|---|---|
| Bonneville | — | 2004 – 2005 | 8 Cyl |
| G8 | — | 2008 – 2009 | 8 Cyl 6.0L |
| GTO | — | 2004 – 2006 | 8 Cyl 5.7L, 6.0L |
Oldsmobile
| Model | Chassis / Generation | Year Range | Engine / Notes |
|---|---|---|---|
| Bravada | GMT360 | 2004 | 4.2L L6. Upstream (front / Position 1) |
Saab
| Model | Chassis / Generation | Year Range | Engine / Notes |
|---|---|---|---|
| 9‑7X | GMT360 | 2005 | 4.2L L6. Upstream (front / Position 1) |
Isuzu
| Model | Chassis / Generation | Year Range | Engine / Notes |
|---|---|---|---|
| Ascender | GMT360 | 2004 – 2005 | 4.2L L6. Upstream (front / Position 1) |
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Company
Hefei Ruimin Electronic Technology Co., Ltd.
Location
Second Floor, No. 4 Building, No. 1666, Ningxi Road, High-Tech District,Hefei,Anhui,China
Contact Person
Mark