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Car Oxygen Sensor 12573721/12586996/8125737210/8125869960 For GM/Chevrolet/Saab

China Car Oxygen Sensor 12573721/12586996/8125737210/8125869960 For GM/Chevrolet/Saab

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Car Oxygen Sensor 12573721/12586996/8125737210/8125869960 For GM/Chevrolet/Saab

MOQ： 50
Price： To Be Negotiated
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Tested	100% Tested
Packaging Details	Foam Bag + Paper box
Cable Length	Approx. 520 mm
Supply Ability	20000pcs/Month
Model	GM/Chevrolet/Saab/Isuzu/Buick/Cadillac
Connector Type	Direct-Fit
Light-Off Time	≤ 15 seconds
Payment Terms	T/T
Thread Diameter	M18 × 1.5
Delivery Time	1-4weeks
OE Number	12573721/12586996/8125737210/8125869960
Quality	OE Quality
Technical Information	Sensor Type: O2
Model Number	12573721/12586996/8125737210/8125869960
Place of Origin	China
Brand Name	RMOS

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Product Details
Company Details

Product Specification


Tested	100% Tested	Packaging Details	Foam Bag + Paper box
Cable Length	Approx. 520 mm	Supply Ability	20000pcs/Month
Model	GM/Chevrolet/Saab/Isuzu/Buick/Cadillac	Connector Type	Direct-Fit
Light-Off Time	≤ 15 seconds	Payment Terms	T/T
Thread Diameter	M18 × 1.5	Delivery Time	1-4weeks
OE Number	12573721/12586996/8125737210/8125869960	Quality	OE Quality
Technical Information	Sensor Type: O2	Model Number	12573721/12586996/8125737210/8125869960
Place of Origin	China	Brand Name	RMOS
High Light	GM Chevrolet Buick oxygen sensor ，Saab Isuzu Cadillac oxygen sensor ，Oxygen sensor with warranty

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)

Company Details

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Business Type:

Manufacturer 
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Year Established:

2021 
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Total Annual:

10000000-50000000
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Employee Number:

50~99 
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Company Overview Hefei Ruimin Auto Sensor Co., Ltd. (hereinafter referred to as “Hefei Ruimin”) is a leading manufacturer and global trader specializing in the R&D, production, and sales of high-quality automotive sensors. Headquartered in Hefei, a renowned technology and industrial ... Company Overview Hefei Ruimin Auto Sensor Co., Ltd. (hereinafter referred to as “Hefei Ruimin”) is a leading manufacturer and global trader specializing in the R&D, production, and sales of high-quality automotive sensors. Headquartered in Hefei, a renowned technology and industrial ...

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Hefei Ruimin Electronic Technology Co., Ltd.
Second Floor, No. 4 Building, No. 1666, Ningxi Road, High-Tech District,Hefei,Anhui,China
https://www.ruiminsensor.com/

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