What Cadillac Products Automotive makes

Cadillac Products Automotive Company (CPAC) is a plastics converter that engineers protective and acoustical plastic parts for passenger vehicles and trucks. Its best-known product is the door watershield, the molded plastic liner behind a door trim panel that blocks water, air, dust, and noise from reaching the cabin. The company describes itself as the largest North American supplier of vehicle door watershields, a position it has held for more than half a century. Its award-winning SOUNDLOC acoustical watershield barrier is used as an industry substrate for combining water sealing with noise reduction, and the SOUNDLOC-SEAL variant carries a dash-mat program for Stellantis.

Beyond watershields, CPAC runs four connected process families under one roof: cast and blown film extrusion, robotic adhesive application, thermoforming and cold forming, and custom injection molding. Named product lines include acoustical absorbers, barriers, decouplers, insulators and silencers for NVH management; aero packages and wheel liners for the underbody; energy-absorption bumper components produced through injection molding at the Rogers City plant; and FIBERSORB transmission shields developed for Ford as a tier supplier. The company also operates an in-house, third-party-certified test laboratory and an in-house prototyping function that it says can verify proof-of-concept in a matter of days, which shortens the front end of an OEM PPAP timeline.

Financial performance

CPAC does not publish audited financials. The company states on its own site that its manufacturing generates sales that surpass $50 million on an annual basis, and a third-party business profile models revenue at roughly $75 million. Headcount is about 225 people across its Michigan and Texas locations, per the company's own About Us page. It is privately held, so margin and balance-sheet figures are not disclosed. Because no solvency or profitability data is published, this profile does not assign a financial-resilience grade rather than infer one, and no figure here should be read as a reported number beyond the company's own stated sales floor.

Ownership and history

Cadillac Products traces to 1942, when a predecessor, Cadillac Bag Company, was formed during World War II after M.P. Williams of Cadillac Bookbinding Company met with Chrysler about a defense packaging program. The company is now a fourth-generation, family-owned and family-managed business, and it has stayed in automotive plastics for more than 80 years. Its documented arc runs from automotive water shields and seat covers in the 1950s, through a used polyethylene cast-film extruder bought in the 1960s to make film for Chrysler water shields, into thermoformed parts for GMC Truck & Coach in the 1960s and 1970s. A 1980s reorganization split the business into Film & Flex, Thermoforming, and Automotive units. In the 1990s the Sterling operation shipped 10 million parts to Chrysler with zero defects and won a Pentastar Award, and the Roseville, Michigan plant opened for watershield production. The Schertz, Texas plant opened in the 2000s to serve GM, Nissan, and Ram ProMaster programs.

Leadership is led by Mike Williams, who became Chief Executive Officer in 2022 after roles as Vice President of Operations and Purchasing, General Manager, and plant manager. Brent Stine is Chief Financial Officer, a role he has held since 2021 after serving as corporate controller. Charles Moritz is Director of R&D and Product Development, and Jeff Hites is Vice President of Marketing and Business Development. Corporate offices are at 5800 Crooks Road in Troy, Michigan, with plants in Roseville and Rogers City, Michigan, a second Troy plant, and Schertz, Texas.

Certifications and quality

Every CPAC manufacturing facility is registered to IATF 16949:2016, the automotive quality-management standard, and to ISO 14001:2015 for environmental management. Per certificates posted on the company's own site, the Rogers City, Roseville, and Schertz plants hold current IATF 16949:2016 registrations with expiry dates running from 2027 to 2028, and the Troy plant's IATF 16949:2016 certificate runs to 2028. The Schertz plant additionally holds ISO 45001:2018 for occupational health and safety. The company's quality lineage on record runs back through TS 16949 (2004 to 2018) and QS-9000 (1995 to 2004), and its Rogers City and Roseville plants have held Ford Q1 status since 1999.

Known customers

CPAC's customer relationships are documented through OEM supplier awards it publishes and through named programs on its own site.

The company also cites Magna as a customer for its Rogers City energy-absorption bumper program and TriMark for supplier-performance recognition. These are relationships the company itself publishes, not third-party inferences.

Recent news

May 2019. General Motors named Cadillac Products Automotive Company a 2018 GM Supplier of the Year at its 27th annual awards ceremony in Detroit, the second time the company's overall performance earned that recognition (company announcement).

2020. CPAC pivoted extrusion capacity to produce films comparable to specifications for protective medical gowns during the COVID-19 response and received a state Saving Business, Saving Lives grant, work later organized under its ProTEC-USA domestic PPE effort (company announcement).

Frequently asked questions

What does Cadillac Products Automotive Company make?

Cadillac Products Automotive Company makes protective and acoustical plastic parts for vehicles, and it is the largest North American supplier of door watershields, the molded liners that block water, air, dust, and noise from a vehicle cabin. It also produces NVH acoustical parts, aero and underbody packages, energy-absorption bumper components, and custom injection-molded parts through extrusion, forming, adhesive application, and molding lines.

Who owns Cadillac Products Automotive Company?

Cadillac Products is a fourth-generation, family-owned and family-managed private company. It traces to 1942 and the Williams family, and it is led today by Chief Executive Officer Mike Williams. It is not publicly traded and does not disclose financial figures beyond stating that annual sales surpass $50 million.

Where is Cadillac Products Automotive Company located?

Cadillac Products is headquartered at 5800 Crooks Road in Troy, Michigan. It operates manufacturing plants in Roseville and Rogers City, Michigan, a second facility in Troy, and a plant in Schertz, Texas, with about 225 employees across those locations.

Who are Cadillac Products Automotive Company's customers?

Cadillac Products serves major automotive OEMs including General Motors, Ford, Stellantis, and Nissan, plus the truck maker PACCAR and tier supplier Magna. It was named a 2018 GM Supplier of the Year, has held Ford Q1 status since 1999, and has won PACCAR quality awards every year from 2010 through 2023.

What certifications does Cadillac Products Automotive Company hold?

Every Cadillac Products manufacturing plant is registered to IATF 16949:2016 for automotive quality management and to ISO 14001:2015 for environmental management, with certificates posted on the company's site running to expiry dates between 2027 and 2028. The Schertz, Texas plant additionally holds ISO 45001:2018 for occupational health and safety.

What is Cadillac Products Automotive Company's revenue?

Cadillac Products states that its annual sales surpass $50 million, and a third-party business profile models revenue at roughly $75 million. The company is privately held and does not publish audited financial figures, so these are a company-stated floor and an external estimate rather than reported results.

Last verified September 27, 2026. Is this your company? Request a correction.