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Nippon Reinz Co., Ltd.

Japanese automotive parts manufacturer specializing in engine components such as cylinder head gaskets, operating as a wholly owned subsidiary of Nichias Corporation.

Last updated September 29, 2026

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Overview

Nippon Reinz Co., Ltd. (株式会社APJ) is a Japanese manufacturer of automotive parts, headquartered in Yamato, Kanagawa Prefecture. The company was originally established in 1967 and has a history spanning more than 50 years in the automotive components industry. Its main products are engine parts, most notably cylinder head gaskets, which are critical sealing components used in internal combustion engines. In 2016, the company became a wholly owned subsidiary of Nichias Corporation, a major Japanese industrial materials manufacturer listed on the Tokyo Stock Exchange. Following this acquisition, the company adopted the name APJ (株式会社APJ) and was integrated into the Nichias Group. As of the latest available information, APJ has 146 employees and a capital of 320 million yen. The company holds ISO 9001 and ISO 14001 certifications, reflecting its commitment to quality management and environmental standards. APJ operates as part of Nichias's automotive parts business segment. Nichias, founded in 1896 as Nippon Asbestos Company, has a long history in sealing materials, gaskets, and industrial products. The acquisition of APJ strengthened Nichias's position in the automotive engine components market, complementing its existing automotive parts offerings such as sealing materials, heat control components, and soundproofing materials for vehicles. The company is located in Yamato City, Kanagawa Prefecture, within a 10-minute walk from Yamato Station, which is served by both the Sagami Railway and Odakyu Electric Railway lines. This location provides convenient access for commuting employees. APJ continues to manufacture automotive engine parts, leveraging the technological capabilities and market reach of the Nichias Group to serve automotive manufacturers primarily in Japan.

History

Nippon Reinz Co., Ltd. was established in 1967 as an automotive parts manufacturer in Japan. For over five decades, the company specialized in the production of engine components, particularly cylinder head gaskets, which are essential for sealing the combustion chamber in internal combustion engines. The company built a reputation for precision manufacturing in the automotive sealing industry. In 2016, a significant turning point occurred when Nichias Corporation acquired the company, making it a wholly owned subsidiary. Following the acquisition, the company was renamed APJ (株式会社APJ) and integrated into the Nichias Group. This acquisition was part of Nichias's strategy to expand its automotive parts business, complementing its existing product lines that include sealing materials, heat control components, and soundproofing materials for vehicles. Nichias Corporation itself has a long history dating back to 1896, when it was founded as Nippon Asbestos Company in Osaka. Over the decades, Nichias expanded into various industrial materials, including gaskets, thermal insulation, fluororesin products, and automotive components. The company went public on the Tokyo Stock Exchange in 1961 and has since grown into a global manufacturer with operations in Asia, Europe, and the Americas. After joining the Nichias Group, APJ continued its manufacturing operations at its Yamato facility in Kanagawa Prefecture. The company maintains ISO 9001 and ISO 14001 certifications, demonstrating its adherence to international quality and environmental management standards. As of the latest available data, APJ employs 146 people and has a capital of 320 million yen. The company's location in Yamato City, within a 10-minute walk from Yamato Station, provides convenient access for its workforce. APJ remains focused on producing automotive engine parts, leveraging the Nichias Group's technological resources and market presence to serve automotive manufacturers. The integration into Nichias has allowed APJ to benefit from the group's research and development capabilities, particularly in sealing technology and materials science.

  • 2016

    Acquired by Nichias Corporation and renamed APJ (株式会社APJ), becoming a wholly owned subsidiary.

  • 1967

    Nippon Reinz Co., Ltd. established as an automotive parts manufacturer.

Products and positioning

A specialized automotive engine parts manufacturer within the Nichias Group, focusing on sealing technology for internal combustion engines.

  • Cylinder head gaskets

    Main product, critical sealing component for internal combustion engines.

  • Automotive engine parts

    Various components for automotive engines.

Sources5 sources

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