Description
Product Overview
The ACDelco GM Genuine Timing Belt 55580776 is engineered to meet General Motors’ exacting standards for durability and performance. Constructed from high‑strength reinforced rubber, the belt resists wear, heat and oil exposure, ensuring consistent engine timing over the life of the vehicle. At 7 x 8 x 3 inches and weighing only 6.7 ounces, it offers a compact, lightweight solution without compromising strength. This OEM‑approved part carries the GM part number 55580776 and is fully compatible with Chevrolet, Buick, GMC and Cadillac models that require a replacement timing belt.
![[Product front view showing all components]](https://www.loftygo.store/wp-content/uploads/2026/06/d127244f96dd45c898f8a6a389b7866c.jpg)
Usage
Designed for a wide range of GM vehicles, this timing belt fits seamlessly into the engine’s timing system, synchronizing the crankshaft and camshaft for optimal power delivery. Whether you are performing routine maintenance, addressing a worn belt, or rebuilding an engine, the 55580776 provides a reliable fit that restores original performance. Ideal for professional service centers, independent garages, and knowledgeable DIY enthusiasts, it supports everyday driving conditions as well as demanding workloads.
Why Choose Us
Choosing the ACDelco GM Genuine Timing Belt means trusting a part that has been rigorously tested and validated by GM engineers. Each belt undergoes strict quality control to guarantee dimensional accuracy and material integrity. Backed by General Motors’ warranty and supported by a network of certified distributors, you receive a product that aligns with factory specifications and offers peace of mind for long‑term engine health.
Key Features
- Heavy‑duty reinforced rubber construction for superior wear resistance
- Exact OEM fit eliminates guesswork and reduces installation time
- Engineered to maintain precise timing for smoother engine operation
- Lightweight design minimizes added load on the engine
- Supported by GM warranty and ACDelco customer service for confidence
FAQ
Is this timing belt compatible with my 2012 Chevrolet Silverado?
Yes, the 55580776 belt is listed for several Chevrolet models, including the 2012 Silverado, as long as the engine family matches the OEM specifications.
How often should the timing belt be replaced?
General Motors recommends replacement every 60,000 to 100,000 miles, depending on driving conditions and engine type. Consult your vehicle’s service manual for exact intervals.
Can I install this belt myself?
Experienced DIYers can install the belt with proper tools and a service manual. If you are unsure, professional installation ensures correct tensioning and alignment.
What warranty does ACDelco provide?
The belt comes with a limited warranty covering defects in material and workmanship, typically up to 12 months or 12,000 miles, whichever occurs first.
Does the belt include any accessories?
The product is sold as a standalone timing belt. Tensioners, pulleys or other related components are sold separately and should be inspected for wear during replacement.





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