📋 Summary
- The company now known as Motherson Yachiyo Automotive Systems was established in August 1953 as Yachiyo Painting Co., Ltd., a designated Honda plant doing metal baking-finish work, before being renamed Yachiyo Industry Co., Ltd. in September 1968
- Under the Yachiyo name, the company became a longtime strategic Honda Group supplier, providing essentially all of Honda’s steel and plastic fuel tanks and sunroofs worldwide, alongside resin body components and hydrogen tanks
- A genuinely important, current ownership change to know about: Honda sold an 81% stake to India’s Samvardhana Motherson Group, the company delisted in January 2024, and was renamed Motherson Yachiyo Automotive Systems Co., Ltd. effective October 2024, with Honda now holding only 19%
- The company remains headquartered in Sayama, Saitama Prefecture, and continues operating, now under majority Indian ownership rather than as a Honda-majority subsidiary
Fuel tanks and sunroofs are genuinely essential but rarely discussed vehicle components, and the company behind essentially all of Honda’s global fuel tank and sunroof supply has a genuinely significant, very recent ownership change worth understanding accurately.
From a Honda Paint Shop to a Global Fuel Tank Specialist
The company now known as Motherson Yachiyo Automotive Systems was established in August 1953 as Yachiyo Painting Co., Ltd., a designated Honda plant performing metal baking-finish work, according to the company’s own corporate history. It was renamed Yachiyo Industry Co., Ltd. in September 1968, the name under which it operated for decades as a longtime strategic Honda Group supplier. Under the Yachiyo name, the company came to provide essentially all of Honda’s steel and plastic fuel tanks and sunroofs worldwide, alongside resin body components and, more recently, hydrogen tanks reflecting the automotive industry’s exploration of hydrogen fuel-cell technology. The company remains headquartered in Sayama, Saitama Prefecture.
💡 Tip: The Yachiyo Name Likely Still Appears on Many JDM Honda Vehicles
If you’re researching a Honda-platform JDM vehicle’s fuel tank or sunroof, the Yachiyo name (rather than the newer Motherson Yachiyo name) is very likely the relevant historical manufacturer, given the company’s genuinely long tenure as Honda’s essentially exclusive fuel tank and sunroof supplier before its 2024 ownership change.
A Genuinely Significant 2024 Ownership Change Worth Knowing
Here’s the important, current detail: Honda sold an 81% stake in the company to India’s Samvardhana Motherson Group, the company delisted from public trading in January 2024, and was renamed Motherson Yachiyo Automotive Systems Co., Ltd. effective October 2024, according to available corporate and trade press records. Honda now holds only 19% of the company, a genuine and significant reduction from its previous majority-owner relationship. The company remains Japanese-headquartered and continues operating, but is no longer a Honda-majority subsidiary, a meaningfully different corporate structure worth being accurate about if you’re researching the company’s current status rather than only its decades-long historical relationship with Honda.
From Small Skylights to Full Panoramic Roofs, and Type-IV Hydrogen Tanks
Yachiyo’s sunroof product range genuinely spans the full spectrum, from basic single-panel skylights through full panoramic sunroofs, and the company has specifically cited installing a panoramic sunroof on the Honda Vezel with the explicit engineering goal of maximizing the sense of cabin openness for occupants, a concrete example of how a sunroof supplier’s work extends well beyond a simple hole-and-glass-panel arrangement into genuine interior-experience design. On the fuel storage side, the company’s more recent work extends to Type-IV hydrogen storage tanks, a genuinely different engineering discipline from a conventional gasoline tank, built to safely contain hydrogen gas at very high pressure for fuel-cell vehicle applications, alongside lighter-weight plastic tailgates as part of the company’s broader resin-component business. This range, from a simple sunroof panel to a high-pressure hydrogen vessel, illustrates just how far the company’s engineering scope has grown from its original 1953 role as a Honda paint shop.
Why Fuel Tank and Sunroof Supplier History Matters
For a Honda-platform JDM vehicle, understanding the genuine, decades-long relationship between Honda and this company, under its Yachiyo name for most of that history, provides useful context for sourcing genuine OEM-equivalent fuel tank or sunroof components, while also understanding that current and future production now occurs under different, majority non-Honda ownership.
⚠️ Caution: Fuel Tank Repair or Replacement Involves Genuine Safety Hazards
Fuel tanks involve flammable fuel and, on some designs, pressurized components, and improper handling during service, repair, or replacement is a genuine safety hazard. Fuel tank work should always be performed by someone with proper training and safety equipment, never attempted without adequate precautions.
Frequently Asked Questions
Q: Is Yachiyo Industry still owned by Honda?
A: No, as of 2024, Honda holds only 19% after selling an 81% stake to India’s Samvardhana Motherson Group; the company was renamed Motherson Yachiyo Automotive Systems.
Q: What did Yachiyo make for Honda?
A: Essentially all of Honda’s steel and plastic fuel tanks and sunroofs worldwide, alongside resin body components and, more recently, hydrogen tanks.
Q: When was the company founded?
A: August 1953, originally as Yachiyo Painting Co., Ltd., a designated Honda plant, before being renamed Yachiyo Industry Co., Ltd. in 1968.
Q: Is the company still operating?
A: Yes, it continues operating under its new name, Motherson Yachiyo Automotive Systems, remaining headquartered in Sayama, Saitama Prefecture.
This article is for general informational purposes based on publicly available company and trade press sources; the 2024 ownership change reflects the most recent available information at the time of writing. Always have fuel tank work performed by a qualified professional with proper training and safety equipment.
Image credit: Car Fuel Tank Cap by Santeri Viinamäki, CC BY-SA 4.0, via Wikimedia Commons
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