GM Genuine Parts D515C Ignition Coil (12632479) – OE Replacement

ProductOverview

The GM Genuine Parts D515C ignition coil is a GM OE replacement designed for GM vehicles. Built within the ACDelco GM Original Equipment lineup, it undergoes more stringent testing than many aftermarket parts. This coil helps boost the electrical system voltage required to reliably ignite the air/fuel mixture, supports the starting and charging system as the engine begins, and continues to power electrical accessories while the engine runs. By using pure copper windings and carefully matched laminations, this part aims to deliver durable, consistent performance that aligns with the original equipment you trust from General Motors.

Key details come from the way this coil is engineered: the number and shape of laminations influence output characteristics, so the maker ensures that silicone steel plates match the original part size and number exactly. Laminations are coated to resist corrosion, and many units include molded plastic protection to shield exposed areas. All of these design choices work toward reliable operation under typical driving conditions, with GM OE standards backing the replacement part.

Quality, Durability, and Fit

Two core benefits stand out in this ignition coil’s design. First, the windings are coated to improve durability and provide protection against internal shorts and dielectric breakdown. Second, the silicone steel laminations are sized and shaped to precisely match the original part, with coatings to deter corrosion and added protection to guard surfaces. This combination supports a robust, long-lasting component that provides the same general performance you expect from GM OE parts.

• Coated windings help resist internal shorts and dielectric issues.
• Exact match of laminations to original size and number for consistent output.
• Protective coatings reduce corrosion risk and shield exposed parts.
• GM-recommended replacement part for your GM vehicle’s original component; OE-quality reliability.
• Designed to meet or exceed strict quality requirements, with a defined size: maximum diameter 1.67 inches and height 6 inches.

What to Expect in Use

When installed as part of routine maintenance or a GM OE replacement plan, this ignition coil may help deliver stable ignition performance, support a dependable starting sequence, and maintain power to essential electrical accessories as the engine runs. While individual results can vary by vehicle and driving conditions, the design is intended to provide consistent electrical support and durability over time.

• Potential for reliable engine starts with properly ignited air/fuel mixtures.
• Enhanced electrical supply to onboard accessories during operation.
• Durability features aimed at resisting corrosion and protecting critical surfaces.
• OEM-grade fit and performance designed for GM vehicles.

Why Choose GM Genuine Parts OE Replacement

Choosing GM Genuine Parts means selecting components that are engineered to align with GM’s original specifications. This ignition coil emphasizes OEM fit, durable construction, and tested performance, providing a credible option when replacing a worn or failed coil. It is presented as a practical, non-guaranteed enhancement to your vehicle’s ignition system, built to support the vehicle’s standard electrical architecture over time.