Description
Product Overview
The GM Genuine Parts Transmission Drain Plug is a precision‑engineered component designed to meet original equipment specifications for Chevrolet, Buick, GMC, and Cadillac vehicles. Constructed from a blend of high‑strength metal and durable plastic, the plug offers corrosion resistance and long‑term reliability. Its machined exterior provides a clean, professional appearance, while the vibrant purple color makes identification easy during service. Measuring 1.3 x 1.3 x 0.2 inches and weighing only 0.16 ounces, this lightweight yet robust plug fits the OEM model number 12616850 and is backed by GM’s rigorous testing standards.
Usage
Ideal for routine transmission fluid changes, this drain plug is suited for both professional mechanics and DIY enthusiasts. The plug’s threaded design ensures a tight seal, preventing leaks while allowing quick removal with standard tools. Its compact size makes it perfect for tight engine bays, and the purple hue helps technicians locate it quickly among other components. Use it when servicing any GM vehicle equipped with the original equipment transmission pan that calls for part number 12616850.

Why Choose Us
GM Genuine Parts are engineered to the same standards as the parts that leave the factory floor. Each plug undergoes strict quality control, ensuring dimensional accuracy and material integrity. Backed by General Motors, the product carries the assurance of OEM fit and function, reducing the risk of cross‑threading or premature wear. Additionally, the brand continuously updates designs to incorporate newer materials, guaranteeing that you receive a component that reflects the latest engineering advancements.
Key Features
- OEM‑approved metal and plastic construction for maximum durability
- Distinctive purple finish for easy identification during service
- Precise 12616850 model match ensures a perfect fit
- Lightweight design (0.16 oz) reduces overall vehicle weight
- Backed by GM’s rigorous testing and quality assurance program
FAQ
Is this drain plug compatible with all GM transmission models?
The plug matches the OEM part number 12616850, which is used in a wide range of Chevrolet, Buick, GMC, and Cadillac transmissions. Verify your vehicle’s service manual to confirm compatibility.
Can I install the plug without special tools?
Yes, the plug can be installed and removed using a standard socket or wrench that fits the thread size. No specialized equipment is required.
What makes the purple color beneficial?
The bright purple coating helps technicians quickly locate the plug in a crowded engine bay, reducing service time and minimizing the chance of using the wrong component.
Does the plug include a washer or gasket?
The plug is supplied as a complete unit with an integrated sealing surface. For applications that require an additional gasket, refer to the vehicle’s service guide for the recommended part.
How does GM ensure the quality of this part?
Each plug is manufactured under GM’s strict quality control protocols, including material testing, dimensional inspection, and functional validation to meet original equipment standards.







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