EV Component Suppliers in Japan

GS Yuasa is a storied Japanese battery manufacturer and a global leader in energy storage solutions. Formed from the merger of Japan Storage Battery and Yuasa in 2004, GS Yuasa brings over a century of expertise in batteries. The company produces a broad range of batteries – from advanced lithium-ion cells for hybrid & electric vehicles to traditional lead-acid accumulators. In the EV domain, GS Yuasa supplies automotive-grade lithium-ion batteries (notably for hybrid systems and specialized EV applications) known for their safety and longevity. Headquartered in Kyoto, GS Yuasa operates production and R&D facilities worldwide (Asia, Europe, North America) and collaborates with automakers (e.g. in joint ventures for hybrid car batteries). Renowned for quality and reliability, GS Yuasa leverages its deep experience to innovate next-generation solid-state and high-capacity batteries, powering the future of mobility and industrial energy storage.

Manufacturer of the famed Cusco brand performance parts (LSDs, suspension) for street and rally cars. Since 1977, Cusco (Carrosser Co.) has engineered premium differential LSD units, chassis and suspension components for motorsport and aftermarket. Known for race-proven innovation and reliability, Carrosser is ISO certified and exports to tuning enthusiasts and racing teams worldwide.

NTN Corporation is a major Japanese manufacturer of bearings and precision components, founded 1918. NTN is known as the largest maker of automotive wheel bearings and CV joints, and second-largest CV joint supplier globally. Its products include rolling bearings, constant velocity joints, and related auto parts. NTN’s extensive automotive expertise, advanced R&D and IATF-certified production make it a preferred supplier for OEMs worldwide.

JTEKT Corporation (Japan) is the world’s largest steering system maker and a major bearing producer (including Koyo brand), established by merger in 2006. It manufactures steering and driveline components, machine tools and bearings. JTEKT’s bearings (tapered, ball, roller) serve automotive and industrial uses. Its global IATF-certified facilities and Toyota-affiliated R&D ensure high-quality, mass-production bearings for OEM supply.

Mino Industry is a specialized Japanese manufacturer of aluminum die cast components with over 60 years of expertise serving automotive, industrial, and electronic markets. Founded in 1960, they have developed comprehensive capabilities in high-pressure and gravity die casting processes complemented by sophisticated machining, surface treatment, and assembly operations. Minos technical leadership in thin-wall casting and precision machining enables lightweight, high-integrity components that help automotive OEMs meet increasingly stringent efficiency and performance requirements. Their advanced facilities in Japan feature state-of-the-art die casting machines up to 2,500 tons, automated machining centers, and comprehensive quality assurance systems. Minos commitment to continuous innovation, meticulous quality control, and responsive customer service has established them as a trusted supplier for precision aluminum components where dimensional accuracy, mechanical integrity, and surface finish are critical to product performance and reliability.

Daido Electronics Co., Ltd. is a leading manufacturer of advanced rare-earth magnets and a wholly owned subsidiary of Daido Steel. Founded in 1990, the company specializes in heavy rare earth-free neodymium magnets used in electric vehicle motors, factory automation equipment, and medical devices. It provides comprehensive support from development to mass production, ensuring high quality and performance under its philosophy “Indispensable for the Changing World”. Daido offers world-class technology, including hot-deformed NdFeB magnets and bonded SmFeN magnets, with exceptional magnetic properties and thermal stability. Its commitment to sustainability (reducing heavy rare earth usage) and continuous innovation makes Daido a trusted partner in the automotive industry and beyond. Buyers can rely on Daido’s decades of expertise and end-to-end capabilities for high-performance magnet solutions.

NSK Ltd. is a Japanese bearing manufacturer founded 1916, ranked among the world’s largest. It produces industrial and automotive bearings (including wheel bearings and steering components), linear guides and precision machinery. NSK leads in technologies such as electric power steering and ball screws. Its global operations and IATF-certified plants supply OEMs and aftermarket buyers seeking high-quality, precision-engineered bearing solutions for mobility and automation.

Nachi-Fujikoshi is a diversified Japanese industrial group (founded 1928) with strong bearings business. It manufactures high-quality bearings (radial, angular contact, roller, spindle types) along with cutting tools, robots and hydraulics. Nachi’s bearings are used in automotive, aerospace and machine tools. Its commitment to innovation and precision (ISO/IATF-certified production) attracts OEM buyers seeking reliable, comprehensive bearing solutions from a single supplier.

MinebeaMitsumi is a Japanese multinational (founded 1951) known for precision miniaturized components, including bearings. It produces miniature and small bearings for automotive, electronics and industrial applications. With ~$8.9B sales (FY2020), ~83k employees, and global operations, it provides high-quality, mass-produced components. Its in-house R&D and ISO/IATF-certified plants ensure reliable products. Minebea owns NMB Technologies (bearings) and NHBB (aerospace bearings).

AESC (Automotive Energy Supply Corporation) is a trailblazer in EV battery manufacturing, originally established in Japan as a Nissan joint venture and now part of the global Envision Group. AESC has decades of experience supplying high-quality lithium-ion batteries, notably as the longtime battery supplier for the Nissan LEAF and other electric vehicles. Today, AESC operates internationally, with battery plants in Japan, the UK, USA, and upcoming in France and China, delivering proven battery solutions to multiple automotive partners. Renowned for its safe LMO/LFP pouch cell technology and reliability record, AESC is expanding its capacity through new gigafactories. Focused on continuous improvement and carbon-neutral production, AESC remains a trusted partner for automakers seeking performance and safety in EV batteries.

Ahresty Corporation is a global leader in aluminum die casting with over 80 years of specialized experience serving automotive and industrial markets. Founded in 1938, they provide comprehensive manufacturing solutions from die design through casting, machining, and assembly delivered through advanced facilities in Japan, North America, China, and India. Ahrestys technical expertise in high-pressure die casting enables sophisticated transmission cases, engine components, and structural parts that contribute to vehicle weight reduction, improved efficiency, and enhanced performance. Their vertically integrated approach includes aluminum recycling operations that ensure material quality while supporting sustainability initiatives. Ahrestys commitment to innovation, quality, and global service has established them as a preferred supplier for automotive OEMs seeking high-integrity aluminum components. Their advanced R&D center continuously develops new alloys, processes, and designs to meet evolving market requirements for lightweighting, electrification, and environmental performance in the automotive industry.

Toshiba Materials (a Toshiba group company established 2003) develops and manufactures a wide range of advanced materials, including magnetic components. They produce high-grade permanent magnets (e.g. Nd–Fe–B and ferrite) and magnetic parts for automotive, industrial, and electronic applications. With ~629 employees and state-of-the-art R&D, Toshiba Materials leverages decades of materials expertise to deliver reliable, high-performance magnets and components that improve motor efficiency and device performance. The company’s integrated capabilities – from fine ceramics to rare-earth magnet production – and quality focus (ISO 9001 / IATF-certified manufacturing) ensure that buyers receive top-tier materials for cutting-edge technologies.

Shin‑Etsu Chemical is one of the world’s largest chemical companies and a pioneer in rare-earth magnet technology. Founded in 1926, Shin‑Etsu’s Magnetic Materials Division produces high-performance Neodymium magnets (NEOMAX®) and other magnets that serve critical applications in electric vehicles, electronics, and industrial equipment. As a global leader, Shin‑Etsu provides a secure supply of magnets, leveraging its comprehensive materials expertise to develop rare-earth-free and heavy rare-earth reduced magnets. With manufacturing in Japan and Vietnam and over 26,000 employees worldwide, Shin‑Etsu offers unmatched quality (ISO 9001/IATF certified) and R&D innovation in magnetics. Buyers benefit from Shin‑Etsu’s reliable production capacity, advanced material science, and decades-long track record of delivering top-tier magnet solutions for automotive and high-tech industries.

Prime Planet Energy & Solutions is a joint venture between Toyota and Panasonic, dedicated to next-generation automotive batteries. Established in 2020 in Japan, PPES combines Toyota’s automotive expertise with Panasonic’s battery technology to develop and manufacture prismatic lithium-ion cells for hybrid and electric vehicles. The company is one of the largest suppliers of EV batteries in Japan, providing high-quality battery packs for Toyota and other automakers. PPES operates from its Tokyo head office and a major production base in the Kansai region, scaling up manufacturing to meet increasing EV demand. With a focus on safety, durability, and performance, Prime Planet is advancing cell chemistry and production efficiency. Backed by two industry giants, PPES aims to deliver stable supply of competitive batteries and contribute to the growth of electrified transportation globally.

Ryobi Limited is a diversified Japanese manufacturing company with over 75 years of expertise in die casting, power tools, printing equipment, and builders hardware. Their Die Casting Division is a global leader in the production of precision aluminum components for automotive, electronics, and industrial applications. Ryobis comprehensive capabilities include engineering support, tool design, high-pressure die casting, machining, surface treatment, and assembly delivered through advanced manufacturing facilities in Japan, the USA, China, and Thailand. Their technical leadership in large-scale, thin-wall castings enables lightweight structural and powertrain components that enhance vehicle efficiency and performance. Ryobis commitment to innovation, quality, and environmental sustainability has established them as a preferred development partner for global automotive OEMs seeking sophisticated aluminum solutions. Their integrated approach to product and process development ensures optimal manufacturability, cost-effectiveness, and component reliability even for the most challenging applications.

Proterial, Ltd. (formerly Hitachi Metals) is a world-leading supplier of magnetic materials. Renowned for its NEOMAX® rare-earth magnets, ferrite magnets, and soft magnetic components, Proterial’s products power electric vehicle motors, industrial machinery, and electronics worldwide. Founded in 1956 as Hitachi Metals, the company pioneered modern Nd–Fe–B magnet technology and continues to innovate to reduce heavy rare-earth usage. With global manufacturing across Japan, China, and beyond, Proterial delivers high-volume, high-quality magnets backed by strong R&D and strict quality standards (ISO 9001, IATF 16949) for the automotive industry. Buyers rely on Proterial’s decades of expertise, vertically integrated production, and reliable supply chain for top-tier magnetic materials and solutions.

TDK Corporation (est. 1935) was the world’s first company to commercialize ferrite magnet material. Today, TDK is a global powerhouse in magnetic components, producing a broad portfolio from high-performance Neodymium magnets and ferrite magnets to inductors, sensors, and electronic components. TDK’s magnets (including heavy rare-earth-free grades) are used extensively in EV motors, wind turbines, and high-tech devices, contributing to higher efficiency and miniaturization. With over 100,000 employees worldwide and manufacturing in Asia, Europe, and the Americas, TDK offers mass production capacity and rigorous quality management (ISO 9001 / IATF 16949) for automotive-grade products. Buyers benefit from TDK’s innovation (from ferrite cores to next-gen NdFeB) and reliability as a one-stop source for advanced magnetics and electronics.

Blue Energy is a Japanese manufacturer of lithium-ion batteries, established as a joint venture between Honda and GS Yuasa in 2009 to produce batteries for hybrid and electric vehicles. The company’s core product is the EH series lithium-ion battery used in Honda’s hybrid cars (such as the Insight, Accord Hybrid, and others). These batteries are designed for high power assist and frequent charge/discharge cycles, featuring a thin prismatic cell format and robust thermal management suitable for automotive environments. Blue Energy operates a production facility in Kyoto that mass-produces these cells under strict quality standards (automotive ISO/TS certification). The technology builds on GS Yuasa’s experience in lithium batteries and is tailored to Honda’s hybrid system requirements for long life and reliability. Blue Energy also engages in R&D for next-generation batteries, including higher energy cells for plug-in hybrids and EVs, leveraging its parent companies’ resources. With a relatively small workforce, Blue Energy is focused on efficiency and quality, having supplied millions of cells to date for Honda’s global hybrid lineup. By combining Honda’s automotive know-how with GS Yuasa’s battery expertise, Blue Energy plays a key role in Japan’s EV industry, ensuring a stable supply of home-grown batteries that meet the safety and performance demands of modern electrified vehicles.

Envision AESC is a global leader in EV battery manufacturing, originally founded as a Nissan joint venture and now part of the Envision Group. With roots in Japan, AESC has over 15 years of experience producing lithium-ion batteries for electric vehicles, notably powering the Nissan LEAF. The company specializes in LMO and LFP pouch cells, known for safety and reliability, and supplies battery packs to multiple automakers. AESC operates gigafactories in Japan, the UK, the US, and China, with new plants planned in France and Spain. Its production capacity is expanding to meet global EV demand, targeting 70 GWh by 2026. AESC’s focus on carbon-neutral manufacturing and advanced BMS ensures high-quality, sustainable battery solutions. With a proven track record and global reach, AESC continues to innovate in battery technology for e-mobility and energy storage.

Toshin Kogyo is a Japanese manufacturer specializing in high-precision components and battery materials for lithium-ion batteries. Established in 1964, the company produces anode and cathode materials, as well as separators, for EV and consumer electronics batteries. Toshin Kogyo’s expertise lies in its advanced material processing technologies, ensuring high-purity and high-performance battery components that meet strict automotive standards. The company supplies materials to major battery makers in Japan and globally, contributing to the production of reliable, high-energy-density batteries. With manufacturing facilities in Japan and a focus on quality, Toshin Kogyo is IATF 16949 certified and invests heavily in R&D to develop next-generation materials, including silicon-based anodes. Its commitment to precision and sustainability makes it a trusted partner in the EV battery supply chain.

Renowned Japanese maker of high-performance limited-slip differentials (LSDs), multi-plate clutches, and gear sets for motorsport and tuning. Founded by Osamu Okazaki in 1973 on a legacy of race engineering, OS Giken produces all components in Japan to exacting tolerances. Trusted for supremely durable drivetrain parts that eliminate noise and maintenance issues, backed by over four decades of innovation in design and manufacturing.

A leading Japanese manufacturer of automatic and CVT transmissions for global OEMs. Jatco, a Nissan affiliate, produces lightweight, efficient transmissions and gearsets for passenger cars, hybrids, and EVs. With cutting-edge automation and IATF 16949 certification, its Fuji plant delivers high-volume transmission components with superior NVH performance. Jatco’s R&D focuses on next-gen EV drivelines, making it a key player in automotive powertrain innovation.

A global Tier-1 supplier of automotive components, including transmissions, drivetrains, and e-axles. Aisin produces automatic, manual, and hybrid transmissions, as well as differential gears and EV drive units. With over 70 years of expertise, its IATF 16949-certified plants deliver high-volume, high-precision components to major OEMs. Aisin’s advanced engineering and global manufacturing footprint make it a leader in driveline and electrification solutions.