Automotive Injection Molding Services

Custom plastic injection molding for automotive components, precision machining, close-tolerance molding, quality assurance.

USA Manufacturing


Engineering-grade Resins


Production Part Approval Process (PPAP)




Parts Made Possible With Injection Molding


The automotive industry is one of the fastest-paced when it comes to innovation. And plastic injection molding is one of the key reasons why. For decades, injection molding provided a way for car manufacturers to change from clunky metal materials to strong lightweight materials. In effect, cars became lighter, more fuel-efficient, and more accessible to drive.

Now, automotive injection molding is more important than before. With the mass production of cars and the car buyer’s appetite for new technology, plastics have a huge role to play. As an automotive component manufacturer, Plastics Plus has the capabilities to help propel these car makers forward. With us, you can keep pace with innovation, meet customer demands, and maintain an effective supplier relationship.

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Helping Carmakers Innovate

The advancement in plastics made it possible to replace most metal car parts with plastic. As a result, car manufacturers redesigned their service and cosmetic parts with strong, lightweight plastic. As a result, almost everything you see in automotive is injection molded.

Below is a shortlist of common automotive injection molded parts:



Interior Parts

Interior surfaces
Door handles
Instrumentation (sensors, gauges, meters)
Air vents
Interface Buttons

Exterior Parts

Fenders/ Bumpers
Grills
Head/ tail lights
Splash Guards

Under the Hood

Oil pans
Covers
Gaskets
Fluid tanks
Authentication of Capabilities

Automotive Capabilities at a Glance

We are a Tier-2 supplier of automotive and marine components. Whether the application is close-tolerance, high-volume, or both- Plastics Plus has the means to produce your parts.

Our customers realize these competitive advantages:

  1. Repeatability
  2. Scalability
  3. Flexible scheduling and availability
  4. Wide material selection
  5. Close-tolerance processing
  6. A network of value-adding partnerships
  7. Secondary processes to reduce the overall cost of manufacturing
Material Selection

Materials That Are Great For Automotive Components


As you know, the automotive industry is all about performance. A part’s performance depends on choosing a material that best suits the application. For example; heat, chemicals, hot liquid, gas, and heavy workload are common with auto parts. This means that you’ll want to consider resin material that can handle these elements. 

A product team can choose from thousands of different materials – each with its own properties. However, where one material has its strengths it also will have weaknesses. Evaluating the environment is a key process in choosing the right material. But to avoid a ‘buyer’s dilemma’ it is best to get involved with your material specialist early on. If you don’t have one, contact your injection molding partner and ask for their recommendations. If they are capable, they should point you in the right direction.



Here are some important properties to consider:

  • Strength 
  • Weight
  • Flexibility
  • Temperature
  • Chemical Resistance (Corrosion)
  • UV Resistance
  • Cost
  • Environmental Impact

Here is a shortlist of some materials that we’ve used on our automotive projects:

  • Polypropylene (PP)
  • Polyamide (PA) 
  • Polyurethane (PU)
  • Polyvinyl Chloride (PVC)

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About Us

Plastics Plus Technology is a woman-owned, USA contract manufacturer based in sunny Southern California. Our custom injection molding and value-added services can provide you with a one-stop job shop for all your plastic manufacturing needs.

ISO 9001:2015, ISO 13485:2016 QMS certified and compliant. FDA compliant. Good Manufacturing Practices (GMPs). WBENC.

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