How to find Auto Parts Manufacturers in Vietnam
The most effective ways to find auto parts manufacturers in Vietnam are to work with a sourcing company with on-the-ground relationships in the country's industrial zones, attend industry-specific trade shows like Vietnam AutoExpo, or use verified directories such as the Vietnam Industry and Trade Information Center (VITIC). Online marketplaces like Alibaba are far less effective for Vietnam than for China, and cold outreach to Vietnamese factories rarely gets a response without a proper introduction.
I've spent over a decade sourcing products from Vietnam and have visited auto parts factories across Binh Duong, Dong Nai, and the northern provinces. The auto parts sector here is real and growing fast, but it operates very differently from China's. Vietnamese factories tend to work with established OEMs rather than chase orders on online platforms. That makes finding the right supplier harder if you're doing it remotely, but the quality and pricing can be excellent once you connect with the right partner. This guide covers what's actually manufactured here, where to look, how to find manufacturers, and how to vet them before placing an order.
Updated Feb 25, 2026
Why Vietnam for Auto Parts
Vietnam exported approximately $4.4 billion in auto parts in recent years and maintains a trade surplus in the category, according to data from the Vietnam Automobile Manufacturers' Association (VAMA). Major global Tier 1 suppliers, including Denso, Bosch, Yazaki, and Schaeffler, operate manufacturing facilities here. The country's 18 free trade agreements (including the CPTPP and EVFTA) give manufacturers preferential tariff access to markets across Asia, Europe, and the Pacific. However, rates vary by product and destination, so always check the latest figures for your specific market.
Vietnam's auto parts industry is still developing. In 2023, only about 20% of vehicle components were produced domestically, compared to around 80% in Thailand. The supply chain is strongest in mid-complexity parts: wiring harnesses, rubber and plastic components, metal stampings, and interior assemblies. For highly specialized or precision-engineered parts, you'll need to assess whether Vietnam's capabilities match your specifications. I've seen this gap close significantly over the past five or six years, especially in CNC machining and quality management systems, but it's not yet there across every component category. For a broader look at what's manufactured in the country, see our guide to products made in Vietnam.
What Auto Parts Are Made in Vietnam
Here is what buyers can realistically source today, based on my experience across factory visits and client projects.
Wiring Harnesses and Electrical Systems
This is arguably Vietnam's strongest auto parts category. Companies like Yazaki and Sumitomo Electric operate large-scale harness production facilities here, employing thousands of workers. We've sourced wiring harnesses and electrical connectors for clients, and the factories that produce them operate at a level of sophistication that surprises most first-time visitors. Batteries, alternators, electronic control units (ECUs), and sensors are also produced here, though ECU manufacturing remains concentrated in foreign-owned facilities such as Denso and Bosch.
Metal and Machined Components
Vietnamese factories produce stamped steel and aluminum panels, brake components, suspension parts, exhaust systems, and engine components, including pistons, crankshafts, gears, and shafts. CNC machining capabilities have improved dramatically in the last five years, especially in the Binh Duong and Dong Nai industrial zones. When I tour machining facilities in this corridor, the equipment from Japanese and German manufacturers is often on par with what you'd see in Thailand or China. The precision is there; the challenge is finding the right factory, because many of these operations don't have English websites or international marketing.
Rubber and Plastic Parts
Vietnam is one of the world's top natural rubber exporters, and the plastic injection molding sector is mature. Auto parts in this category include seals, gaskets, bushings, weather stripping, bumpers, interior trim panels, air ducts, and headlamp housings. I've toured injection molding facilities in the south running 2,000+ tonne machines for automotive-grade components, and the quality control processes at the better factories are rigorous. THACO Industries operates a dedicated plastic components plant at Chu Lai with systems capable of processing up to 3,200 tonnes.
Interior and Body Components
Seats, dashboards, headliners, floor mats, door panels, upholstery, auto glass, body panels, radiators, condensers, and AC units are all produced here by both domestic and foreign-owned manufacturers. We've handled sourcing interior components for clients, and the factories that do this work tend to be well organized, partly because many of them supply Toyota, Hyundai, and Ford assembly plants locally and have had to meet OEM standards to keep those contracts.
Where Auto Parts Manufacturing Is Concentrated
Southern Vietnam: Binh Duong, Dong Nai, and Ho Chi Minh City
This is the highest concentration of auto parts manufacturing in the country and the region I know best. Our main office is in Binh Duong Province, and most of the auto parts factory visits we conduct for clients are within a one- to two-hour drive. The industrial parks in this corridor (VSIP, Long Thanh, Song Than, Bien Hoa) house operations from Bosch, Denso, and dozens of smaller component manufacturers. Bosch's high-tech factory in Long Thanh alone employs over 6,000 people. The proximity to Ho Chi Minh City's ports makes this region ideal for export-oriented production.
Northern Vietnam: Hanoi, Hai Duong, and Hai Phong
Ford operates an assembly plant in Hai Duong, Yazaki has harness production in Hai Phong, and VinFast's main production complex is also based here. If your auto parts are destined for a northern assembler or you need proximity to Chinese supply chains for raw materials, this region makes logistical sense. We've sourced from northern factories for clients, and the infrastructure is solid, though the auto parts supplier base is somewhat smaller than in the south.
Central Vietnam: Quang Nam (Chu Lai)
Quang Nam is notable primarily for THACO's Chu Lai complex, which I'll cover in the manufacturer section below. Central Vietnam is less developed for sourcing general auto parts. Still, it's relevant if your project aligns with THACO's capabilities or if you're interested in the region's lower land and labor costs.
Top Auto Parts Manufacturers and Suppliers in Vietnam
The companies below are established players with verified production and export track records. One important caveat: for many sourcing projects, the best-fit factory is a smaller, specialized manufacturer that doesn't appear in any directory. These large operations are useful for understanding the landscape, but they come with high MOQs and less flexibility. The right factory for your specific part might employ 200 people, not 8,000.
THACO Industries (Truong Hai Group)
Vietnam's largest domestic auto parts manufacturer. THACO Industries operates over 20 manufacturing plants at the Chu Lai complex in Quang Nam Province, covering 320 hectares with nearly 8,000 employees and over $850 million in total investment. They produce OEM components, including body panels, automotive glass, springs, wiring harnesses, air conditioning systems, seats, and interior/exterior parts for Kia, Mazda, Peugeot, BMW, Toyota, Hyundai, and Isuzu. Certified to IATF 16949, ISO 9001, and ISO 14001. Exports to the US, Canada, Australia, and ASEAN markets. THACO is the benchmark for what domestic Vietnamese auto parts manufacturing looks like at scale.
Denso Manufacturing Vietnam (DMVN)
A subsidiary of Japan's Denso Corporation, one of the world's top five auto parts suppliers. Established in 2001, DMVN produces air conditioning systems, engine cooling systems, sensors, and other precision automotive components in Dong Nai Province. Denso's quality standard is what I benchmark other suppliers against when evaluating factories for clients. If a Vietnamese factory can demonstrate processes comparable to what Denso runs, that's a strong signal.
Bosch Vietnam
Operating since 2007 with a high-tech manufacturing facility in Long Thanh Industrial Park, Dong Nai. Over 6,000 employees produce pushbelts for continuously variable transmissions (CVT), automotive electronics, and powertrain components. Also operates R&D centers for automotive technology in Ho Chi Minh City. Bosch's and Denso's presence has had a spillover effect: Vietnamese engineers who trained at these facilities move into the broader supply chain and bring those standards with them.
Yazaki Vietnam
Part of Japan's Yazaki Corporation, one of the world's largest wiring harness manufacturers. Yazaki operates multiple plants in Vietnam, including Yazaki EDS Vietnam and Yazaki Haiphong Vietnam. Their long-standing presence has been instrumental in building Vietnam's capacity for electrical component manufacturing, and the workforce trained by Yazaki feeds into smaller harness and connector factories across the country.
Hyundai Thanh Cong Manufacturing Vietnam (HTMV)
A joint venture between Hyundai Motor and Vietnam's Thanh Cong Group. HTMV assembles Hyundai vehicles and sources electrical systems, suspension parts, and interior components from both in-house production and local Vietnamese suppliers. Joint ventures like this anchor local supplier development and create a downstream network of parts manufacturers that independent buyers can also access.
Note: Cosmo Sourcing is not a manufacturer. We are a sourcing company that connects buyers with factories like these, and the hundreds of smaller, specialized producers across Vietnam that don't appear on any list.
How to Find Auto Parts Manufacturers in Vietnam
Here are the methods that actually work, ranked by effectiveness from our experience. For additional directories and resources, see our guide to finding manufacturers in Vietnam.
Work with a Sourcing Company
For auto parts specifically, this is the most efficient starting point. The tolerances are tighter, the certifications matter more, and the consequences of a bad supplier choice are more serious than with simpler product categories. A sourcing company with on-the-ground teams can identify factories you'd never find through online searches, handle introductions in Vietnamese, and pre-qualify suppliers against your technical requirements before you spend time on samples. At Cosmo Sourcing, auto parts are one of the categories where local presence makes the biggest difference. You can learn more about how we work on our Vietnam sourcing page.
Attend Industry Trade Shows
Vietnam AutoExpo and Saigon Autotech & Accessories are the two most relevant events. Trade shows let you meet factory representatives face to face, see product samples, and assess capabilities in ways no website can replicate. I've found that the relationships built at these events lead to better pricing and prioritization than cold outreach ever does. Most Vietnamese trade shows take place in Hanoi and Ho Chi Minh City, making logistics straightforward if you're already visiting factories.
Contact Industry Associations
The Vietnam Automobile Manufacturers' Association (VAMA) can point you toward component suppliers. The Vietnam Association of Mechanical Industry (VAMI) covers the broader mechanical and parts manufacturing sector. The Vietnam Chamber of Commerce and Industry (VCCI) maintains databases of verified manufacturers and can facilitate introductions. These organizations are especially useful for reaching manufacturers that don't have English-language websites, which is the majority.
Use Online Directories (with Realistic Expectations)
Alibaba, Global Sources, and Vietnam Yellow Pages list Vietnamese auto parts suppliers, but results require heavy filtering. Many listings are inactive, represent trading companies rather than actual factories, or haven't been updated in years. The Vietnam Exporters Directory managed by VIETRADE is more reliable for verified exporters. I'd treat online directories as a starting point for building a shortlist, not as a sourcing decision. For a detailed breakdown of directory options, see our guide to supplier directories in Vietnam.
How to Vet an Auto Parts Supplier in Vietnam
Finding potential manufacturers is only half the process. I've seen sourcing projects fail because buyers skipped proper vetting. Auto parts carry higher quality and safety stakes than most product categories, so due diligence is not optional.
Check Certifications
IATF 16949 is the gold standard for the automotive supply chain. If a factory holds this certification, it means it meets the requirements that major OEMs demand. ISO 9001 (quality management) and ISO 14001 (environmental management) are important baselines. Ask to see the current certificates directly and verify them with the issuing body. I've encountered factories that claimed certifications they didn't actually hold, so verification matters, especially with suppliers you haven't worked with before.
Visit the Factory
There is no substitute for walking the production floor. When I visit auto parts factories in Vietnam, I'm looking at equipment condition and age, worker skill levels, raw material storage practices, quality control stations on the production line, and how management responds to questions about reject rates and process controls. A factory that's confident in its capabilities will welcome your visit. One who stalls or makes excuses is a red flag. If you can't visit in person, a sourcing company can conduct a factory audit on your behalf.
Request and Test Samples
Get production-representative samples (not just prototyped or hand-finished pieces) and test them against your full specifications. For auto parts, this often means material-composition testing, dimensional accuracy checks, and durability or fatigue testing, depending on the component. Material composition testing is particularly important for metal components. The wrong alloy can have serious performance and safety implications, and it's not something you can catch visually. Third-party testing labs, including SGS, Bureau Veritas, Intertek, and TUV, all have offices in Vietnam.
Understand MOQs and Lead Times
Auto parts MOQs in Vietnam vary widely depending on the component and whether new tooling is required. Large tier-one suppliers require substantial volume commitments. Smaller, specialized factories may take orders in the hundreds rather than thousands, but you'll need to balance flexibility against their production capacity and quality systems. Lead times for first orders involving new tooling commonly run 60 to 90 days or longer. Get clear timelines in writing before committing.
Verify Export Experience
A factory that has exported auto parts to markets with strict regulatory requirements (the EU, Japan, North America, Australia) has demonstrated its ability to meet international quality and documentation standards. Ask for export references and, where possible, contact them. A manufacturer with zero export history isn't necessarily a bad choice, but it carries more risk and will likely need more hands-on quality management from your side.
Cosmo Sourcing // Source Auto Parts from Vietnam
If you're looking for auto parts manufacturers in Vietnam, we can help you find the right factory for your specific components. At Cosmo Sourcing, we've helped thousands of clients source over 10,000 products from Vietnam since 2012. Our team is based in Ho Chi Minh City with direct access to the Binh Duong and Dong Nai industrial corridors, where much of Vietnam's auto parts production is concentrated.
We use a flat-fee pricing model, not a commission-based one. That means our recommendations are based on the best fit for your project, not on which factory pays us the most. We typically deliver 2 to 6 original factory quotes per project, with full pricing transparency and direct introductions to the factories. No markups, no hidden fees, and you get complete contact details for every supplier we recommend.
Contact us at info@cosmosourcing.com or visit cosmosourcing.com/contact-us to discuss your project.
