Plastic Injection Molding for Automotive Parts: Transforming the Industry

Plastic Injection Molding for Automotive Parts: Transforming the Industry

Modern cars, trucks, and SUVs are assembled from thousands upon thousands of unique components. (Most estimates put the number in the neighborhood of 30,000 separate parts.) That number consists of everything from the tiniest nuts, bolts and fasteners to highly complex drivetrain components and huge, intricately designed exterior body panels.

When it comes to modern passenger vehicles as well as commercial transport, an increasing number of those components are manufactured through plastic injection molding services. In fact, over the last several decades, plastic injection molding has transformed the automotive manufacturing sector in many unique and positive ways, evolving into one of the primary production methods used throughout the industry today.

A Brief Overview of Plastic Injection Molding in Automotive Manufacturing


An extremely flexible and efficient manufacturing process, injection molding helps the automakers and parts manufacturers produce safer, much more sustainable vehicular components than was traditionally possible. Likewise, the design freedom of injection molding facilitates much more efficient transport, shipping, and inventory control. The result is substantially reduced waste and more cost-effective products.

Injection molding services also offer a wide range of other benefits to the modern automotive industry. For example, the ability to manufacture durable components in virtually any complex shape or custom color allows vendors to achieve their unique goals in product branding and aesthetics. Another major advantage is insert molding, which allows us to produce seamlessly compatible automotive plastic parts that are substantially lighter and less costly than their metal counterparts.

The Advantages of Injection Molding Services for Automotive Manufacturers

Achieving Higher Complexity for Precision Automotive Parts

A large percentage of modern automotive parts demand high dimensional complexity with precision tolerances. Plastic injection molding gives us the design flexibility to manufacture these intricate parts quickly, accurately, and repeatably.

In some cases, injection molding can be used as a metal replacement solution. Many automotive components which were traditionally metal can now be molded with high-performance plastics to reduce costs and improve efficiency – both in manufacturing and in the end product.

Efficient and Lightweight by Design

Today’s automotive industry is focused on efficiency and sustainability. Due to environmental regulations and consumer expectations, modern vehicles are required to be more fuel efficient than ever. Likewise, the production processes that go into automotive manufacturing are expected to be as eco-friendly as possible, thus lowering the overall footprint of every car on the road.

Two of the main ways modern automakers achieve these efficiency goals is by making components as lightweight and aerodynamic as possible. The design flexibility of injection molding lets us produce the complex exterior part designs for modern vehicles which facilitate better aerodynamics and fuel efficiency. We are also able to design reinforced plastic parts to be as strong and lightweight as possible (especially in the case of metal replacement components), reducing overall vehicle weight along with its lifetime carbon footprint.

Better Quality and Repeatability

The injection molding is extremely accurate and consistent. It allows us to cost-effectively produce quality automotive parts for both low-volume and high-volume projects. Manufacturing errors are minimized through careful design and automation. Furthermore, the end products can be production-ready: precision tolerances ensure proper fit and functionality, while the highly consistent surface finishes satisfy the automotive sector’s expectations of premium aesthetic quality.

A More Efficient and Sustainable Plastic Manufacturing Process

The efficiency, consistency, and flexibility of plastic injection molding all add up to make it a more sustainable process for modern automotive part manufacturing. Of course, achieving the best sustainability possible is more crucial than ever in today’s automotive industry and beyond.

Solving Automotive Supply Chain Issues with Quality American Injection Molding Services

For more than half a century, SRC Plastics has remained one of Massachusetts’ leading injection molding companies for the automotive manufacturing sector and beyond. We provide reliable American manufacturing services for virtually any molded plastic food products with a focus on better quality and better sustainability.