Automotive Plastic Parts Manufacturer
Custom Automotive Plastic Parts Manufacturer

Retlaw Industries manufactures custom plastic parts for automotive and transportation applications. As an automotive injection molding company in Hartland, Wisconsin, Retlaw produces OEM plastic components built around your part requirements, material needs and production goals.
Automotive manufacturers and suppliers use plastic components to reduce part weight, improve corrosion resistance, simplify assembly and replace heavier metal components when the application allows. Retlaw supports those needs with in-house design and engineering, tooling, plastic injection molding, assembly and quality control.
From fully developed CAD drawings to early-stage part ideas, Retlaw can help move your plastic automotive component from concept to finished production.
Contact Retlaw today to get a quote on custom automotive plastic parts.
Talk to Retlaw About Automotive Plastic Parts
Plastic Automotive Components for Interior and Transportation Applications
Retlaw manufactures custom molded plastic components for automotive applications where strength, weight, durability and repeatable production matter. Depending on your design, material and performance requirements, plastic injection molding can be used for parts such as:
Door, Wall and Ceiling Panels
Molded plastic panels can help reduce weight while supporting durable interior surfaces for vehicles and transportation equipment.
Dashboards
Plastic dashboard components and related interior parts can be manufactured to meet the shape, finish and fit requirements of your application.
Seatback Assemblies
Custom molded plastic components can be used in seatback assemblies and other interior systems that require consistent dimensions and repeatable production.
Armrest Components
Plastic armrest components can be designed for comfort, durability and integration with other interior vehicle parts.
Luggage Rack Components
Plastic components may be used in luggage racks and storage-related vehicle assemblies where lightweight, durable parts are needed.
Display Housings
Plastic display housings, bezels and related dashboard components can be molded to protect, support and integrate electronic displays.
Need a custom plastic component for an automotive application? Retlaw can review your part requirements and recommend a manufacturing path based on your material, tooling, molding and assembly needs.
Why Automotive Manufacturers Use Plastic Components
Plastic components are common in automotive applications because they can deliver practical manufacturing and performance advantages over metal in the right use case. Depending on the selected material and part design, automotive plastics can help with:
- Lower component weight
- Resistance to moisture, oils, solvents and many acids
- Corrosion resistance
- Repeatable production for OEM parts
- Design flexibility for complex shapes
- Reduced production cost compared to some metal components
- Easier assembly for multi-part systems
Retlaw works with customers to match the part design, material and molding process to the intended use of the component.
Plastic Materials for Automotive Component Manufacturing
The right plastic material depends on the part’s function, environment, load requirements, appearance and production needs. Retlaw works with a range of thermoplastic materials used across automotive and industrial applications, including:
- Acrylonitrile butadiene styrene (ABS): common for dashboard parts, instrument panel bezels, console components, door panels and more
- Nylon (PA): common for seatbelt-related components, carpet fibers, interior handles, fasteners and more
- Polycarbonate (PC): common for instrument cluster covers, interior lighting fixtures, trim pieces and more
- Polyoxymethylene (POM): common for gearshift knobs, seat belt components, door handles, window guides and more
- Polypropylene (PP): common for interior trim panels, center console components, door trims, glove boxes, storage organizers and more
Retlaw can help evaluate plastic material options for your automotive part based on performance requirements, production goals and cost considerations.
Automotive Plastic Parts Manufactured to Your Specifications
Retlaw supports custom automotive plastic part manufacturing from early design through production. Our in-house capabilities allow customers to work with one manufacturer for multiple stages of the process.
Design and Engineering
Retlaw can work from CAD drawings, sketches or early product ideas to help turn a plastic part concept into a manufacturable component. Our design and engineering capabilities help customers move from concept to tested design.
Tooling
Precision tooling is a critical part of consistent plastic injection molding. Retlaw’s tooling capabilities help prepare parts for repeatable production.
Plastic Injection Molding
Retlaw specializes in thermoplastic injection molding for OEM plastic parts. Our Hartland facility houses more than 19 molding presses ranging from 45-ton computerized molding machines to 720-ton electric injection molding machines.
Assembly
If your automotive plastic component requires assembly after molding, Retlaw can support production with equipment such as ultrasonic welders, hot stamping machines and pad printing machines.
Prototyping
For new or refined automotive component designs, Retlaw can help produce prototypes before a part moves into full production.
Contact Retlaw for Custom Plastic Auto Components
Quality Control for OEM Automotive Plastic Components
Automotive plastic parts need to be consistent, durable and built to specification. Retlaw’s ISO 9001:2015 certification supports a manufacturing process focused on quality, repeatability and inspection.
Retlaw’s quality control specialists analyze products before they leave the facility. Inspection capabilities include an optical comparator, electronic height gauges, digital scales and pin gauges in a clean inspection room.
For OEM customers, that quality process helps support plastic components built to match design requirements, production expectations and end-use standards.
Automotive Plastic Parts Made in Wisconsin
Retlaw manufactures custom plastic components from its facility in Hartland, Wisconsin, near the Milwaukee metro area. For Wisconsin automotive manufacturers, suppliers and industrial companies, Retlaw offers access to custom plastic injection molding, tooling, engineering, assembly and quality control from a local manufacturer.
Retlaw also serves companies beyond Wisconsin that need custom OEM plastic parts built to specification. Whether your operation is local, regional or national, Retlaw can help manufacture plastic components for automotive and related transportation applications.
Plastic Components for Automotive and Adjacent Industries
Many automotive plastic part requirements overlap with other equipment and industrial applications. Retlaw also manufactures custom plastic components for related industries, including automation, agriculture, appliances, construction, electronics, lawn and garden equipment and warehousing.
Get a Quote From an Automotive Plastic Parts Manufacturer
If you need a custom plastic part for an automotive application, Retlaw can help with design support, tooling, injection molding, assembly and quality control. Share your part requirements with Retlaw to start the quote process.
Learn more about our custom plastic automotive components, or contact Retlaw today to get a free quote on your custom parts.


