Check if this fits your car first
We can’t guarantee fitment or accept fitment returns without a vehicle selected.
Year
Make
Model
Trim
Engine
Select Year
Select Make
Select Model
Or call us at 888-477-2530 — we’ll help you out.
$9.95
GM Genuine Parts Alternator Bracket Sleeve 12663770
Part # 12663770
Main Image
Click to expand
1 / 26
For Shops & FleetsBuy for your business and
start saving today.
Your Pro Price
$8.96Members
Approved in minutes · No fees
GM Genuine Parts Alternator Bracket Sleeve 12663770
23% OFF$995
$12.95Save $3.00•Out of Stock
1
Estimated Delivery by calculating...
Calculating shipping time...
Ships to
Verified Fitment
Parts matched to your vehicle.
Quick Delivery
Fast shipping from trusted warehouses.
Simple Returns
30-day return policy.
Top Brands
OEM & aftermarket names you trust.
Millions of Parts
Maintenance items to complete assemblies.
Everyday Low Prices
Trusted since 2019 — quality at fair prices.
Vehicle Compatibility
No compatibility data available for this part.
Specifications
Brand: GM Genuine Parts
Part Number: 12663770
Part Type: Alternator Bracket Sleeve
Condition: New
Length (In): 0.8 in
Features Benefits - Bullet 1: Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Features Benefits - Bullet 2: GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
Features Benefits - Bullet 3: GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features Benefits - Bullet 4: GM regularly updates production and service part designs to integrate new materials and technologies
Height (In): 0.75 in
Product Description: GM Genuine Parts Alternator Bracket Sleeves are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the pr
Programming Required: No
Volume (Cu In): 0.33cu in
Weight (Lb): 0.3 lb
Width (In): 0.8 in
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 Alternator Bracket Sleeve fit?
This GM Genuine Parts Alternator Bracket Sleeve (Part #12663770) 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 Alternator Bracket Sleeve by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.
What warranty is included?
This GM Genuine Parts Alternator Bracket Sleeve 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
Alternator Bracket Sleeve
Features Benefits - Bullet 1
Some GM Genuine Parts may have form...
Features Benefits - Bullet 3
GM Engineers design and validate OE...
Part Number
12663770
Length (In)
0.8 in
Features Benefits - Bullet 2
GM Genuine Parts are designed, engi...
Features Benefits - Bullet 4
GM regularly updates production and...
Length (In)0.8 in
Features Benefits - Bullet 1Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Features Benefits - Bullet 2GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
Features Benefits - Bullet 3GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features Benefits - Bullet 4GM regularly updates production and service part designs to integrate new materials and technologies
Height (In)0.75 in
Product DescriptionGM Genuine Parts Alternator Bracket Sleeves are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the pr
Programming RequiredNo
Volume (Cu In)0.33cu in
Weight (Lb)0.3 lb
Width (In)0.8 in
Tap to zoom1 / 26Swipe
Part # 12663770GM Genuine Parts Alternator Bracket Sleeve 12663770
Brand GM Genuine PartsCondition NewAlternator Bracket Sleeve24-mo warranty
$995
$12.95SAVE 23%
Dealer charges $18.78SAVE 47%— You save $8.83
Out of Stock
Out of Stock
OE REPLACEMENT
GM Genuine Parts Alternator Bracket Sleeve 12663770
|
Part #:12663770
|
Alternator Bracket Sleeve
$9.95In Stock
$12.95Save 23%
Quantity:
1
Out of Stock
Shipping calculated at checkout · Est. arrival Fri, Aug 14 to Fri, Aug 14
Ships To:Out of Stock
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 Alternator Bracket Sleeve fit?
This GM Genuine Parts Alternator Bracket Sleeve (Part #12663770) 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 Alternator Bracket Sleeve by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.
What warranty is included?
This GM Genuine Parts Alternator Bracket Sleeve 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 Alternator Bracket Sleeve 12663770
Part # 12663770
Main Image
Click to expand
1 / 26
$995
$12.95SAVE 23%
Dealer charges $18.78SAVE 47%— You save $8.83
Out of Stock
Out of Stock
OE REPLACEMENT
GM Genuine Parts Alternator Bracket Sleeve 12663770
|
Part #:12663770
|
Alternator Bracket Sleeve
$9.95In Stock
$12.95Save 23%
Quantity:
1
Out of Stock
Shipping calculated at checkout · Est. arrival Fri, Aug 14 to Fri, Aug 14Ships To:Out of Stock
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 Alternator Bracket Sleeve fit?
This GM Genuine Parts Alternator Bracket Sleeve (Part #12663770) 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 Alternator Bracket Sleeve by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.
What warranty is included?
This GM Genuine Parts Alternator Bracket Sleeve 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 Alternator Bracket Sleeve
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