What Wescast Industries makes

Wescast Industries is a global maker of cast and machined exhaust hardware for passenger cars and light trucks, and describes itself as a leading provider of automotive exhaust solutions. The core product is the cast exhaust manifold, the part that collects exhaust gas from an engine's cylinders and routes it into the exhaust system. Around that core the company builds turbocharger housings, integrated turbo-manifolds, exhaust assemblies and elbows, water-cooled exhaust manifolds, secondary air-injection and venturi tubes, brake housings, and heavy-truck exhaust gas heat recovery units. Its published product range spans small turbocharged engines, such as 1.4L turbo housings and manifolds, up to 5.3L and 6.2L V8 exhaust manifolds.

The metallurgy is where a manifold supplier earns its place on a program. Wescast casts in SiMo iron, ductile iron, compacted graphite iron, Ni-Resist, and stainless steel, the grades that survive the high and rising exhaust temperatures of modern downsized, turbocharged engines. It runs greensand foundries using both manual ladle pour and automated tilt pour with SO2 and shell cores, plus a proprietary licensed investment-casting process for stainless steel. Because the company machines most of what it casts, it controls part cost, quality, and delivery across the tooling and machining steps rather than handing castings to a separate machining supplier.

Turbocharger housings are a stated growth focus. The company says it is the only turbo-housing supplier with manufacturing in North America, Europe, and Asia, and has organized a cross-functional team around turbine-housing sales, engineering, materials, and manufacturing. That footprint matters to a global OEM that wants the same Tier 1 part sourced consistently across regional plants.

Manufacturing footprint

Wescast runs three regional business units. The North American unit combines a casting operation with heavy machining: its Ontario machining operations list 17 CNC machining centres and 14 multi-station special-purpose lines, and its Michigan machining facilities add 67 CNC machining centres plus automated welding for cast and fabricated assemblies. A separate North American stainless steel operation runs proprietary investment casting with 19 CNC machining centres and laser and TIG welding assembly. The European business unit, in Oroszlany, Hungary, is a combined foundry and machining site with 93 CNC machines and a published foundry capacity of 73,000 metric tons. The Asian business unit, centered on Wuhan, China, runs 62 CNC machines and a published foundry capacity of 39,000 metric tons. Research, product design, testing, and prototyping are consolidated at the Technical Development Centre in Brantford, Ontario, which houses a mini-foundry and machine shop for advanced-engineering prototypes.

Ownership and history

The business traces to 1902, when Western Foundry Co. Ltd. was chartered in Wingham, Ontario, on the site of a failed stove foundry, and spent its first six decades making cast-iron stoves, ranges, and furnaces, including a 60-year supply relationship with the T. Eaton Co. Stove production ended in 1966, and through the 1970s and 1980s the foundry moved into automotive castings, mastering thin-walled, highly cored parts. In 1983 it became the first iron foundry in North America certified as a Ford Q1 supplier, and by 1987 it was primarily dedicated to manifold castings. It entered automotive design in 1988 with a General Motors Quad 4 manifold, added machining to reach Tier 1 status in 1991, and renamed itself Wescast Industries Inc. when it listed on NASDAQ in 1994. Through the 1990s and 2000s it expanded into Europe (a Hungarian casting and machining joint venture with Linamar, in production from 2002) and into China (a casting and machining plant from 2007, with stainless steel added by 2011).

In 2013 Wescast became a wholly owned subsidiary of the Bohong Group after Sichuan Bohong Industry Co., Ltd. completed a court-approved plan of arrangement that took the then NASDAQ- and TSX-listed company private. The Bohong Group, based in Mianyang, Sichuan and established in 1999, operates more than 40 automotive subsidiaries. Since the acquisition, Wescast's supply chain has integrated tightly with its Chinese sister plants, a shift that became sharply visible in 2023 when the company closed its century-old Wingham casting foundry and moved that casting work to its Wuhan foundry, keeping machining in Wingham.

Known customers

Most exhaust-manifold programs are confidential, but several Wescast customers are on the public record through the company's own program history and major-outlet coverage.

Sourcing evidence

Wescast's US import record reads exactly like a global casting-to-machining operation. It shows 157 sea shipments from December 2017 through September 2026, and the goods are almost entirely exhaust manifolds moving from Wescast's own foundries in China into its North American machining plants. The most active shipper by far is Wescast Industries China in Wuhan, followed by Sichuan Wescast Industries in Yanting, both intercompany sources tied to the Bohong Group.

Five shown of the recorded suppliers.

The activity is current: the most recent shipments, in September 2026, are exhaust manifolds from the Sichuan plant. But the trend is down. Estimated volume for the last month runs about 33 percent below the prior year, and the direction fits the wider market, where the shift to electric vehicles is steadily reducing demand for internal-combustion exhaust manifolds. That structural decline was the stated backdrop when the company closed the Wingham foundry in 2023.

For a North American buyer, the pattern also carries a nearshoring and tariff read: the finished part is machined in Ontario or Michigan, but the casting itself crosses the Pacific from China, so landed cost and duty exposure sit with the casting, not the machining. Buyers qualifying a Wescast program should expect the standard PPAP discipline to span two continents and both a foundry and a machining plant.

Coverage caveats: these are US ocean-freight records only. Air, truck, and rail movements do not appear, some records name freight intermediaries rather than manufacturers, and product categories come from declared manifest codes, which are noisy. Absence of a record is not evidence of absence.

Frequently asked questions

What does Wescast Industries make?

Wescast Industries makes cast and machined exhaust hardware for passenger cars and light trucks: exhaust manifolds, turbocharger housings, integrated turbo-manifolds, exhaust assemblies and elbows, water-cooled manifolds, secondary air tubes, and heavy-truck exhaust gas heat recovery units. It casts in SiMo iron, ductile iron, compacted graphite iron, Ni-Resist, and stainless steel, and machines most of what it casts.

Who owns Wescast Industries?

Wescast Industries has been a wholly owned subsidiary of the Bohong Group since 2013, when Sichuan Bohong Industry Co., Ltd. completed a court-approved acquisition that took the previously NASDAQ- and TSX-listed company private. The Bohong Group is based in Mianyang, Sichuan, China, was established in 1999, and operates more than 40 automotive subsidiaries.

Where is Wescast Industries headquartered?

Wescast Industries is headquartered at 200 Water Street in Wingham, Ontario, Canada, which also houses its Technical Development Centre. It operates machining, casting, and sales facilities in Ontario and Michigan, Oroszlany in Hungary, Wuhan and Shanghai in China, plus sales and design offices in Germany, the United Kingdom, France, and Japan.

Who are Wescast Industries' customers?

Most of Wescast's exhaust-manifold programs are confidential, but Ford and General Motors are documented customers through the company's own program history and trade-press coverage, and Volvo has been named in that coverage as well. Wescast won seven consecutive General Motors Worldwide Supplier of the Year awards starting in 1993 and supplied Honeywell (Garrett) Turbo Technologies with its first stainless steel turbo program.

What happened to the Wingham foundry?

In 2023 Wescast closed its century-old casting foundry in Wingham, Ontario and moved that casting work to its sister foundry in Wuhan, China, with parts shipped back to Wingham for machining. About 180 of roughly 250 unionized foundry workers were laid off, with roughly 100 machining jobs retained. The company cited the automotive industry's shift toward electric vehicles, which reduces demand for exhaust manifolds.

Is Wescast Industries still operating?

Yes. Wescast continues to cast and machine exhaust manifolds and turbocharger housings across its plants in Ontario, Michigan, Hungary, and China, and US customs records show it was still actively importing exhaust-manifold castings from its Chinese foundries as of September 2026. Volume is declining alongside the broader move away from internal-combustion powertrains.

Last verified September 28, 2026. Is this your company? Request a correction.