This is sensor 2, or the downstream sensor.

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GM Parts Genuine AC Delco 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: 404284028

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Details

Brand
GM GENUINE
Item dimensions L x W x H
20.8 x 8.1 x
Material
Stainless
Item weight
0.19 Pounds
Style
Modern

📏8.34L x 3.18W x 2.99H inches

🔌Heated Oxygen Sensor

⚖️0.2 Pounds

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

🚗 Drive Smart, Breathe Clean!

COMPACT DIMENSIONS - Fits seamlessly into your vehicle's system.
LIGHTWEIGHT DESIGN - Weighs only 0.2 pounds for easy installation.
OEM QUALITY ASSURANCE - Genuine AC Delco part for reliability.
PRECISION ENGINEERING - Crafted by GM for optimal performance.
ENHANCED FUEL EFFICIENCY - Improves engine performance and reduces emissions.

The GM Parts Genuine AC Delco Heated Oxygen Sensor (12657188) is a high-quality electronic sensor designed to enhance your vehicle's performance. With precise dimensions of 8.34L x 3.18W x 2.99H inches and a lightweight build of just 0.2 pounds, this genuine part ensures optimal fuel efficiency and reduced emissions, making it a must-have for eco-conscious drivers.

Specifications

Manufacturer	GM
Brand	GM GENUINE PARTS
Model	Heated Oxygen Sensor
Product Dimensions	20.83 x 8.13 x 8.13 cm; 86.18 g
Item model number	12657188
Exterior	Painted
Manufacturer Part Number	12657188
OEM Part Number	12657188
Item Weight	86.2 g

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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