This is sensor 2, or the downstream sensor.

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GM Parts ACDelco Genuine Heated Oxygen Sensor - 12657188

Q: I need to replace all 4 do they sell bank 1 and for bank 2or are they the same part?

Bank 1 and Bank 2 are different part numbers

Q: do they fit 2014 silverado downstream for left and right?

I don't know but pretty sure there is a fitment link where the part is listed on Amazon.

Q: Does this fit 2014 Silverado downstream left?

Yes, the ACDelco Genuine Heated Oxygen Sensor - 12657188 will fit a 2014 Silverado downstream left. The sensor is specifically designed for 2014-2018 Chevrolet Silverado 1500s with 4.3L V6 Flex OHV engines. It is a direct fit, so it will install easily and will provide years of reliable service. The sensor is made of high-quality materials and is designed to withstand the harsh conditions of the exhaust system. It is also heated, which helps to improve the sensor's performance.

Product ID: 155939096

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Details

Brand
GM
Item dimensions L x W x H
8.2 x 3.2 x
Item Weight
3.04 ounces
Style
Modern
Maximum Supply Voltage
12 Volts (DC)

⚡12V max supply voltage

📏Compact 8.2x3.2x3.2 inch size

🔥Up to 1200°F heat resistance

Frequently Bought Together

GM Parts ACDelco Genuine Heated Oxygen Sensor - 12657188

GM Genuine Parts 12659516 Heated Oxygen Sensor

Offset Oxygen Sensor Socket, 3/8-Inch Drive, 7/8-Inch (22mm), Wire Gate Accesses Sensor from Side, Preventing Damage to Wires, Universal for Most Cars

Description

🔥 Stay ahead of the curve with precision sensing power! ⚡

GENUINE OEM QUALITY - ACDelco-manufactured GM part guarantees perfect fit and factory-grade performance.
LIGHTWEIGHT COMPACT - Sleek dimensions and just 3 ounces for seamless integration without added bulk.
PLUG AND PLAY INSTALLATION - Flange mount design simplifies replacement, minimizing downtime and hassle.
PRECISION ENGINE MONITORING - High-accuracy oxygen sensing for optimal fuel efficiency and emissions control.
DURABLE HEAT RESISTANT DESIGN - Operates reliably at extreme temperatures up to 1200°F, ensuring longevity under harsh engine conditions.

The GM Genuine Parts 12657188 Heated Oxygen Sensor by ACDelco is a high-accuracy, OEM-grade electronic sensor designed to monitor oxygen levels in your vehicle’s exhaust. With a durable flange mount, compact size, and heat resistance up to 1200°F, it ensures optimal engine performance and emissions control while offering easy installation and long-lasting reliability.

Specifications

Brand	GM
Item dimensions L x W x H	8.2 x 3.2 x 3.2 inches
Item Weight	3.04 ounces
Style	Modern
Maximum Supply Voltage	12 Volts (DC)
Measurement Accuracy	High (exact value not provided)
Mounting Type	Flange Mount
Output Type	electrical signal
Specific Uses For Product	Oxygen Sensor
Upper Temperature Rating	1.2E+3 Degrees Fahrenheit
UPC	808709090670
Manufacturer	ACDelco
Model	Heated Oxygen Sensor
Product Dimensions	8.2 x 3.2 x 3.2 inches
Item model number	12657188
Exterior	Painted
Manufacturer Part Number	12657188
OEM Part Number	12657188

Have a Question? See What Others Asked

I need to replace all 4 do they sell bank 1 and for bank 2or are they the same part?

do they fit 2014 silverado downstream for left and right?

Does this fit 2014 Silverado downstream left?

Is this sensor 1

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