Description
1989-2003 | 2004-2018 | 2019-2025 Toyota Hiace Van Airbag Suspension Load Assist Kit By Boss Global
What’s Included:
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2 x BOSS Extreme Series Double Bellow Airbags (specifically for Toyota Hiace)
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4 x Mounting Brackets (2 upper, 2 lower)
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Mounting Hardware
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SAE J844 Government-Approved Airline
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Dual Schrader Valves in a Stainless Panel
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Step-by-Step Installation Instructions
Key Features:
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Each BOSS Extreme Series airbag is rated to 2,500 lbs (1,136 kg) per side
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Tested and approved to withstand over 750 psi
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Designed and manufactured in-house by BOSS — every airbag is branded and quality-controlled
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Avoid unbranded imports — often low-grade products from overseas
Performance Tips:
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Typical air pressure ranges from 15–45 psi depending on load
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Inflate just enough to level your vehicle — this ensures the full suspension system works together, preventing stress on any single component
Proven Reliability:
With over 13,000 load assist kits sold across Australia, BOSS kits are trusted by 4WD enthusiasts, tradies, mining operators, tour companies, farmers, and RV owners. Wherever there’s weight to carry, BOSS delivers.
Boss air bag assembly:
- Tighten all bag bolts evenly.
- Adjust the ride height by pushing the height control valve arm up to add air to the air springs, or down to remove air.
- Don’t exceed the recommended air pressure (100 PSI in sleeve and bellows style air spring applications).
- Don’t exceed the recommended torque requirements.
- Don’t use air springs as a substitution for weight distribution or sway bars.Â
