If your SIHOO M18 chair isn’t feeling as fresh as day one, don’t worry—replacement parts can bring it back to life. From gas lifts and wheels to armrests and headrests, this guide shows you the essential parts you can swap out to keep your ergonomic comfort going strong.
Buy SIHOO M18 Parts Online

The ergonomic mesh backrest is designed to offer lumbar support and promote airflow to keep your back cool. Ideal for long hours of sitting, it helps maintain correct posture and reduces fatigue. » find on amazon / find on ebay

This adjustable headrest provides tailored neck and upper spine support, especially useful during long desk sessions. Its curved design enhances ergonomic comfort and helps prevent neck stiffness. » find on amazon / find on ebay

2D adjustable armrests that move vertically and horizontally to support your forearms and elbows. Designed to relieve tension in shoulders and wrists during work or gaming. » find on amazon / find on ebay

The W-shaped seat cushion features high-density foam to distribute weight evenly, reduce pressure on hips, and enhance long-term sitting comfort. Breathable fabric keeps you cool. » find on amazon / find on ebay

Heavy-duty five-star aluminum base that offers excellent stability and balance. Compatible with standard gas lifts and casters, it ensures durability under regular use. » find on amazon / find on ebay

This pneumatic gas lift lets you adjust chair height smoothly. It’s certified for safety and reliability, suitable for most standard bases and mechanisms. » find on amazon / find on ebay

Set of smooth-rolling PU casters designed to protect hardwood floors and provide noise-free gliding. Easy to install and compatible with standard bases. » find on amazon / find on ebay

This replacement tilt mechanism allows recline tension adjustment and lock-in-place functionality. Essential for restoring chair ergonomics and comfort after wear. » find on amazon / find on ebay
Buy SIHOO M18 Parts From a Local Authorized Dealer or Repairman Near You
Buying SIHOO M18 parts from a local authorized dealer or repair technician ensures you get genuine, high-quality replacements and professional support. Local experts can help with correct part identification, installation, and warranty claims. This can save time and reduce the risk of compatibility issues. Authorized service centers often stock official components like gas lifts, armrests, or tilt mechanisms, and may even offer repair services. For the best results, always verify the part model and consult directly with the supplier. Use the official contact page to find local assistance
Tips for Ordering SIHOO M18 Replacement Parts
- Identify the exact model of your SIHOO M18 chair to ensure part compatibility.
- Check the chair’s manual or original product listing for part specifications.
- Measure and compare dimensions if ordering third-party replacement parts.
- Use high-resolution images to visually match damaged components.
- Read customer reviews to confirm the part fits the SIHOO M18 specifically.
- Prefer parts labeled “OEM” or “genuine” for quality assurance.
- Confirm the return policy before purchasing in case the part doesn’t fit.
- Order from trusted retailers or SIHOO’s official store when possible.
Tools Needed to Repair SIHOO M18
- Screwdriver Set: Essential for removing and tightening screws. A reliable screwdriver set helps handle most SIHOO chair screws with ease.
- Allen Wrenches (Hex Keys): Commonly used for chair assembly and adjustments. Many SIHOO parts use hex bolts. Find a set here.
- Rubber Mallet: Useful for gently tapping parts into place without damaging plastic or metal components. View mallets on Amazon.
- Adjustable Wrench: Ideal for tightening nuts and bolts during base or gas lift replacement. Search adjustable wrenches.
- Needle Nose Pliers: Handy for gripping small parts or pulling pins during disassembly. Find pliers here.
- Lubricant Spray: Helps reduce squeaks and smoothens moving parts like tilt mechanisms. WD-40 on Amazon.
- Replacement Screws & Washers: Always good to have on hand in case original hardware is stripped or lost. Browse hardware kits.
Small tool kits can make repairing your SIHOO M18 chair much easier and safer. Using the correct tools ensures you won’t damage parts or void any warranty coverage.
SIHOO M18 Diagram & Manual
For a detailed SIHOO M18 chair manual and parts diagram, visit the official SIHOO setup guide page. It offers downloadable manuals and installation videos to assist with assembly, maintenance, and part identification. This resource is invaluable for ensuring correct installation and understanding your chair’s components. Access the official SIHOO M18 manual and diagram here
How to Prevent Damage to SIHOO M18 Parts
- Use a Chair Mat: Prevent wheel and floor damage by using a chair mat on hard surfaces or carpets to reduce friction and debris.
- Clean Regularly: Dust and debris can wear down parts over time. Use a compressed air duster or soft cloth to clean joints and moving components.
- Lubricate Moving Parts: Apply WD-40 or silicone spray to tilt mechanisms and casters every few months for smooth operation.
- Avoid Overloading: Do not exceed the weight limit of the SIHOO M18. Overloading can stress the gas lift and base, causing premature failure.
- Tighten Screws Periodically: Use a screwdriver set to check and tighten loose screws to avoid instability or part detachment.
- Store in a Dry Area: Avoid exposing your chair to excess humidity, which can corrode metal parts and weaken structural integrity over time.
- Use Properly Adjusted Settings: Make sure the tilt and height settings are within recommended positions to prevent overstrain on the gas cylinder and tilt lock.
Conclusion
That’s all you need to keep your SIHOO M18 rolling smoothly. A few parts here and there, and it’s basically good as new. No need to dump a great chair when you can just fix it up. Grab what you need, make the swap, and enjoy the comfort all over again.