Description
Product Overview
The ACDelco Rubber Seal (Model 251‑2066) is a GM‑recommended replacement part designed to match the original factory component in fit, form, and function. Manufactured by ACDelco under the GM GENUINE PARTS brand, this seal is constructed from a premium rubberized composite material that delivers superior elasticity and resistance to oil, heat, and environmental stress. Each pack contains two seals, each weighing just 0.04 pounds, making them easy to handle and install. The part number 12657430 aligns with GM OE specifications, ensuring a seamless integration into your vehicle’s system.
Usage
This seal is ideal for use in a variety of GM vehicles where a reliable barrier against fluid leaks is essential. Whether you are performing routine maintenance, addressing a minor leak, or conducting a full engine overhaul, the ACDelco seal provides the confidence of a factory‑approved component. It is suitable for both professional mechanics and DIY enthusiasts who demand precision and durability. 
Why Choose Us
Choosing the GM GENUINE PARTS ACDelco seal means opting for a product that meets strict GM OE standards. Each seal undergoes rigorous quality testing to guarantee consistent performance, longevity, and exact fit. The partnership between GM and ACDelco ensures that you receive a part that upholds the brand’s reputation for reliability, reducing the risk of premature failure and costly repairs. Additionally, the seal’s material composition offers enhanced resistance to degradation, providing peace of mind for years of service.
Key Features
- OEM‑grade rubberized composite for superior durability
- Exact GM specification fit for model 251‑2066
- Two‑count pack for convenient replacement
- Lightweight design at 0.04 lbs per seal for easy handling
- Backed by GM GENUINE PARTS quality assurance
FAQ
What vehicles are compatible with this seal?
The seal is designed for GM models that specify part number 12657430, commonly found in various Chevrolet, GMC, Buick, and Cadillac vehicles. Refer to your vehicle’s service manual for exact compatibility.
Can I install the seal myself?
Yes, the seal is user‑friendly and can be installed with basic hand tools. Ensure the mounting surface is clean and free of debris for optimal sealing performance.
What material is the seal made from?
The seal is crafted from a high‑quality rubberized composite, offering excellent flexibility and resistance to oil, heat, and environmental factors.
How does this seal compare to aftermarket alternatives?
Being a GM‑approved part, it matches the original equipment specifications, providing a more reliable fit and longer service life than many generic aftermarket options.
Is the pack sufficient for a full replacement?
Each pack contains two seals, which is typically enough for a standard replacement on most applicable GM models. Verify the required quantity in your service guide.
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