When it comes to automotive, qualtiy and dependablity matter.

From delivering excellent services at all stages of the production process to keeping pace with regulatory requirements, our engineering solutions are tailored to meet the demands of your organization & your customers.


1. Engine Components

Engine Components

  • Patent Valve Lifter Guides
  • Intake Manifold systems
  • Timing Chain Guide
  • Powertrain Components
  • Shock retention straps and components

2. Exterior


  • Module Window Frames
  • Mirrors
  • Mirror Brackets
  • Mirror Shells

3. Trim


  • Class A Finish Products
  • Exterior Trim Inserts

4. Interior


  • Shifter Handle & Bezels
  • Interior Internal Panel Systems
  • Electrical over molded wire harnesses


To ensure that Diversified Engineering & Plastics provides the best plastic injection molding products and engineering services for you, we take every step to guarantee quality.  Our team members are thoroughly trained and authorized in all aspects from design to assembly to finalized product.

No matter what product we are manufacturing, quality is our top priority. Our quality process has numerous tests and control points positioned throughout the production to make sure your final product is flawless.


Cost savings from a complete customer experience redesign for a global retailer


Reduction in year-over-year contact minutes for a consumer manufacturer


Improvement in customer satisfaction ratings for a large provider

Recent Press

DEP Prepping for Growth

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VIA Plastics News: Diversified Engineering & Plastics LLC is adding new equipment and making ...

Top 100 Supplier – Ford Motor Co.

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JACKSON, Mich., May 22, 2018… Diversified Engineering & Plastics (DEP), a Tier 1 supplier, recei...


We take processes apart, rethink, rebuild, and deliver them back working smarter than ever before.