Automotive Exterior Assembly Components - Design Engineering & Manufacturing

We are not a body panel or trim molder. We are a design engineering and manufacturing solution provider that specializes in a variety of assembly components and MRO components developed specifically for exterior automotive applications. We've worked closely with Tier-1s and the OEMs to develop new versions of standard products that will meet testing standards and keep Design-for-Manufacturability at the forefront of what we engineer.


Top Automotive Exterior Solutions

Custom Door Seals

Extrusions may be price friendly, but they several limitations that prevent certain projects from meeting OE specs.  Automotive doors are unique in shape and rarely feature straight edges. This is why, in some cases, you need a seal that is molded into a curve shape.

Echo's work with project type includes manufacturing selection and optimization, tooling, material modifications, the addition of pressure-sensitive adhesive (PSA) for improved assembly, pre-assembled fasteners, custom packaging, comprehensive testing, and several other consideration factors that are easy to forget before kicking off tooling.

Project Highlights

  • Enhancing the vehicle's build quality
  • Improving sound characteristics during the door's closure
  • Reducing downstream labor and assembly costs

Body Panel Plugs - Improved Sealing & Access Point Coverage

Echo’s engineers are skilled at designing panel plugs that minimize installation and removal forces without compromising the sealing and NVH capabilities of our panel plugs. Our panel plugs are also designed to work with a range of panel thicknesses – meaning fewer SKUs can cover a wider range of holes.

Our custom solutions allow us to create complex seal geometry that is way beyond a typical slot or hole. And don’t worry about panel flatness. We can design plugs to fit whatever geometry you have.

Automotive door seal manufacturerAutomotive door seal manufacturer

Body Panel & Trim Butyl Patches

Echo is adept at improving NVH characteristics and lowering in-cabin acoustics. We also under the manufacturing assembly aspect as well. In 2019, Echo developed the EchoLoc™ Butyl Foil for a top EV manufacturer.  What makes this solution special is that:

  • The patches can be removed and repositioned within 5 minutes if they're misaligned on the assembly line without residue being left
  • They then lock into a permanent bond over the next hour
  • Based on application or surface requirements, we will customize the thickness of butyl used (typically for NVH purposes) and the butyl patch's geometry
Electric Vehicle Butyl PatchesElectric Vehicle Butyl Patches

Custom Injection Molded Assembly Components

Exteriors divisions that manufacture large, injection-molded pieces typically don't want to deal with assembly components that require molding machines below 610-800 tons. This is where Echo comes in.

After Echo's acquisition of Ammex Plastics (Monroe, MI) in 2018, Echo doubled down on its expertise in automotive plastic injection molding. These investments have resulted in numerous new fastening projects used by tier-1s and by EV OEMs. We utilize customer system requirements to begin ideation then design, develop, simulate, test, and manufacture fasteners that meet or exceed difficult criteria.

Projects In-Progress Include:

  • Plastic Fender Cover (Class-B component requiring a Class-A finish)
  • Custom clips and fasteners
Injection molding machineInjection molding machine

Top Automotive Exterior MRO Solutions

Industrial Masking Experts

Body panels that require Class-A finish typically go through pre-treatment, e-coat, primer, the basecoat, and then clear coat.  The issue that these manufacturers run into include overspraycoating on weld points, and defects caused during shipping.

At Echo, we specialize in masking solutions from as simple as masking tapes, all the way to large rubber caps/covers that mask tailgates in areas that need to be clear of coating. We're also known for protective films and die-cuts used to project finishes during shipment, inspection arrows used during manufacturing, and a variety of custom-engineered masking solutions.


Catalog Masking Solution


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