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$114.95
GM Genuine Parts 4-Wire Oxygen Sensor 12656543
Part # 12656543
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GM Genuine Parts 4-Wire Oxygen Sensor 12656543
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Specifications
Brand: GM Genuine Parts
Part Number: 12656543
Part Type: Oxygen Sensor
Condition: New
Grade Type: Regular
Length (In): 8.09 in
Mounting Type: Threaded
Overall Length: 19.65 IN
Sensor Type: Heated
Terminal Type: Blade
Thread Diameter (In): 0.71 in
Thread Diameter (Mm): 18 mm
Wiring Harness Length: 14.45 IN
Connector Gender: Female
Connector Shape: triangular
Features Benefits - Bullet 1: This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Features Benefits - Bullet 2: Detects oxygen content in the exhaust gases to help optimize emissions
Features Benefits - Bullet 3: Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Features Benefits - Bullet 4: GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
Features Benefits - Bullet 5: GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features Benefits - Bullet 6: GM regularly updates production and service part designs to integrate new materials and technologies
Height (In): 3.06 in
Product Description: GM Genuine Parts Oxygen (O2) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are special feedback sensors on your vehicle's exhaust
Programming Required: Yes
Terminal Gender: Male
Terminal Quantity: 4
Thread Size: M18x1.5
Universal Or Specific Fit: Specific
Weight (Lb): 0.2 lb
Width (In): 3.06 in
Wire Quantity: 4
Wrench Size: 22
Warranty: 24 Months
Frequently Asked Questions
We're always here to help. If you can't find your answer, ask Rydon - our AI assistant will help you out.
What vehicles does this Oxygen Sensor fit?
This GM Genuine Parts Oxygen Sensor (Part #12656543) fits specific vehicles. Use the compatibility checker on this page to verify fitment for your vehicle.
Is this an OEM or aftermarket part?
This is a premium aftermarket Oxygen Sensor by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.
What warranty is included?
This GM Genuine Parts Oxygen Sensor is backed by a 24-month limited warranty covering defects in materials and workmanship from date of purchase.
How long does shipping take?
Free standard shipping on all orders. Most orders ship within 1-2 business days and arrive within 3-5 business days.
Can I return this if it does not fit?
30-day money-back guarantee. Return unused parts in original packaging for full refund.
Product Specifications
Brand
GM Genuine Parts
Part Type
Oxygen Sensor
Length (In)
8.09 in
Overall Length
19.65 IN
Part Number
12656543
Grade Type
Regular
Mounting Type
Threaded
Sensor Type
Heated
Grade TypeRegular
Length (In)8.09 in
Mounting TypeThreaded
Overall Length19.65 IN
Sensor TypeHeated
Terminal TypeBlade
Thread Diameter (In)0.71 in
Thread Diameter (Mm)18 mm
Wiring Harness Length14.45 IN
Connector GenderFemale
Connector Shapetriangular
Features Benefits - Bullet 1This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Features Benefits - Bullet 2Detects oxygen content in the exhaust gases to help optimize emissions
Features Benefits - Bullet 3Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Features Benefits - Bullet 4GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
Features Benefits - Bullet 5GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features Benefits - Bullet 6GM regularly updates production and service part designs to integrate new materials and technologies
Height (In)3.06 in
Product DescriptionGM Genuine Parts Oxygen (O2) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are special feedback sensors on your vehicle's exhaust
Programming RequiredYes
Terminal GenderMale
Terminal Quantity4
Thread SizeM18x1.5
Universal Or Specific FitSpecific
Weight (Lb)0.2 lb
Width (In)3.06 in
Wire Quantity4
Wrench Size22
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Part # 12656543GM Genuine Parts 4-Wire Oxygen Sensor 12656543
Brand GM Genuine PartsCondition NewOxygen Sensor24-mo warranty
$11495
$142.95SAVE 20%
Dealer charges $207.28SAVE 45%— You save $92.33
In Stock·Hurry, 4 Left
QTY
1
FREE
Shipping
Shipping
30-Day
Returns
Returns
24-Mo
Warranty
Warranty
Expert
Support
Support
OE REPLACEMENT
GM Genuine Parts 4-Wire Oxygen Sensor 12656543
|
Part #:12656543
|
Oxygen Sensor
$114.95In Stock
$142.95Save 20%
Pay in 4 interest-free payments of$28.74withPayPal
Quantity:
1
In Stock·Hurry, 4 Left
FREE delivery between Fri, Aug 14 to Fri, Aug 14
Ships To:Key Features
OEM-Equivalent QualityMeets/exceeds factory specs
American BusinessMaryland since 1986
24-Month WarrantyLimited coverage on every part
Free Same Day ShippingWe ship all orders the same business day before cutoff
Product HighlightsBeta
Reading the catalog · checking interchanges · researching…
What vehicles does this Oxygen Sensor fit?
This GM Genuine Parts Oxygen Sensor (Part #12656543) fits specific vehicles. Use the compatibility checker on this page to verify fitment for your vehicle.
Is this an OEM or aftermarket part?
This is a premium aftermarket Oxygen Sensor by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.
What warranty is included?
This GM Genuine Parts Oxygen Sensor is backed by a 24-month limited warranty covering defects in materials and workmanship from date of purchase.
How long does shipping take?
Free shipping on orders $50+. Most orders ship within 1-2 business days and arrive within 3-5 business days.
Can I return this if it does not fit?
30-day money-back guarantee. Return unused parts in original packaging for full refund.
GM Genuine Parts 4-Wire Oxygen Sensor 12656543
Part # 12656543
Main Image
Click to expand
1 / 2
$11495
$142.95SAVE 20%
Dealer charges $207.28SAVE 45%— You save $92.33
In Stock·Hurry, 4 Left
QTY
1
FREE
Shipping
Shipping
30-Day
Returns
Returns
24-Mo
Warranty
Warranty
Expert
Support
Support
OE REPLACEMENT
GM Genuine Parts 4-Wire Oxygen Sensor 12656543
|
Part #:12656543
|
Oxygen Sensor
$114.95In Stock
$142.95Save 20%
Pay in 4 interest-free payments of$28.74withPayPal
Quantity:
1
In Stock·Hurry, 4 Left
FREE delivery between Fri, Aug 14 to Fri, Aug 14Ships To:Key Features
OEM-Equivalent QualityMeets/exceeds factory specs
American BusinessMaryland since 1986
24-Month WarrantyLimited coverage on every part
Free Same Day ShippingWe ship all orders the same business day before cutoff
What vehicles does this Oxygen Sensor fit?
This GM Genuine Parts Oxygen Sensor (Part #12656543) fits specific vehicles. Use the compatibility checker on this page to verify fitment for your vehicle.
Is this an OEM or aftermarket part?
This is a premium aftermarket Oxygen Sensor by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.
What warranty is included?
This GM Genuine Parts Oxygen Sensor is backed by a 24-month limited warranty covering defects in materials and workmanship from date of purchase.
How long does shipping take?
Free shipping on orders $50+. Most orders ship within 1-2 business days and arrive within 3-5 business days.
Can I return this if it does not fit?
30-day money-back guarantee. Return unused parts in original packaging for full refund.
About This Oxygen Sensor
This GM Genuine Parts automotive component is engineered to meet or exceed OEM specifications for reliable performance and long service life.
Key Features
- Meets or exceeds OEM specifications
- Direct-fit replacement design
- Rigorously tested for durability
- Professional-grade construction
- Backed by manufacturer warranty
Signs This Part Needs Replacement
- •Unusual noises from the component area
- •Decreased vehicle performance
- •Warning lights on dashboard
- •Visible wear or damage
- •Failed vehicle inspection
GM Genuine Parts
Trusted Automotive Brand
GM Genuine Parts is a trusted manufacturer of quality automotive parts.
View all GM Genuine Parts productsInstallation Guide
Moderate
1-3 hours
Tools Needed
Basic hand toolsTorque wrenchVehicle service manual
Frequently Asked Questions
WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which are known to the State of California to cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts