4 Benefits of Injection Molding Automotive Parts

Author: Justin

Aug. 25, 2025

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4 Benefits of Injection Molding Automotive Parts

Within every vehicle, there are a variety of parts that have different materials, such as plastic. Many automotive parts have plastic components from injection molding. These offer numerous benefits to drivers and their vehicles. Read on to learn the benefits of injection molding automotive parts and why producing great vehicles is necessary.

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Affordable Parts

Most parts made of metal cost more than plastic parts. The metals needed to make certain parts, such as the rims and chassis of a car, are limited resources, and most suppliers price them higher because of their value or rarity.

Plastic injection molding can construct many parts without this limitation, making it more accessible and affordable. These affordable parts put less stress on car companies that need access to parts that require replacement, such as the knobs of a stereo or the handles of a car door.

Faster Production

Production is an essential aspect of manufacturing that needs to remain as high as possible to meet demand. The automotive industry's reliability comes from its ability to mass-produce vehicles and their parts. Injection molding benefits this industry by offering a fast turnaround for requests.

An injection molded design is easy to mass produce quickly thanks to the swiftness of the machinery and the fast process of molding the resin. Vehicle parts will have no shortage of available parts with the benefit of quick production within a demanding industry.

Durability

Although people see vehicles’ exteriors as the most durable parts because of their metal composition, they still have the potential to rust and corrode over time. Injection-molded parts of an automotive vehicle are some of the most durable pieces in the structure. Plastic lasts significantly longer than metal and maintains its shape and structure for decades.

The variety of options of polymers to use in the process is a great benefit of injection molding automotive parts. And each option has various advantageous characteristics that ensure the parts remain in good shape for years. Things like the steering wheel maintain their integrity despite constant handling and pressure from people's grips because of the injection molding.

Flexible Design

As vehicles continue to push the boundaries of functionality and control for the driver, automotive parts may have different designs that require flexible manufacturing. Thanks to its flexibility, injection molding is the best process for designing new or innovative designs.

This is thanks to the variety of molds to choose from. Plastic injection molding parts with detailed designs or nuanced shapes are easier to make, and you won't lose the efficiency in production regardless of how unique the design is.

Want more information on Automotive injection molded parts? Feel free to contact us.

Injection molding is a valuable process for many industries, especially automotive. Use plastic injection molding and reap the benefits of its fast-paced manufacturing for your automotive needs and drive toward your business's goals.

6 Benefits of Using Less Resin in Automotive Injection Molded Parts ...

There are more benefits of reducing resin in your injection molded automotive parts than we can possibly list here, but we’ll try to cover at least most of the bases. Here are the top 6 benefits of material reduction:

1. Cost savings

It’s pretty obvious that less material means less cost to the business, right? It can mean less cost in a lot of other ways too. There is less machine downtime, less cost involved with each scrapped part, and less damage to the mold and machine due to improper shot sizes or flash (and we all know how costly mold damage can be). Not to mention the time saved by managers on figuring out problems, so they can spend that valuable time doing more important things to improve the organization. And let’s not forget the cost of shipping bad parts to customers.

2. Faster cycle times

Faster cycle time means making more parts faster. And more parts means what? More money. More satisfied customers means even more repeating and new customers. It’s a snowball effect of revenue.

3. Less scrap in our landfills

Less scrap means less money thrown out, yes. But it also means less time digging through piles of parts wondering where it all went wrong. Less time fixing processes to try to get a good part again. And, most importantly, less plastic waste in our landfills. Our planet is swimming in plastic waste, and every single pellet we can save from our landfills is a win for all of us and our future generations.

4. Lower shipping costs

Lighter weight parts mean you pay less to ship them. With shipping costs at a peak right now, this can be a huge savings that hasn’t been taken into consideration when calculating whether the investment is worthwhile. How many parts do you ship a day? What if each part was 5% lighter? It may seem minuscule, but it adds up in the long run.

5. Less gasoline consumption

Lighter weight automotive parts means less weight on the vehicle, which leads to less gas consumption. We’re all suffering from the astronomical gas prices right now. And it’s a fact that lighter weight cars use less gas. Imagine if every single injection molded part on a car contained 5% less materials—that weight adds up quickly, especially on large parts. It not only lowers the gas required to power the vehicle, but it also puts less strain on the frame and tires of the car, potentially increasing their life span as well. For every 100 pounds of reduced weight, fuel economy is increased by 10%. For electric cars, a 10% reduction in weight is a 6-8% increase in range.

6. Longer lasting EV batteries

Going along with number 5, lighter automotive components put less load on the battery systems resulting in longer range for the vehicle. This saves the final user money and frustration, increasing car sales, increasing your customer’s faith in you, which (you guessed it) leads to long-term partnerships and more continuous revenue.

Conclusion

Learn more and discover how to reduce materials in automotive parts with our latest white paper.

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