---
product_id: 297690815
title: "chairpartsonline Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6\" x 10.2\" Mounting Holes - S2979-HD Black"
brand: "chairpartsonline"
price: "₩316863"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/297690815-chairpartsonline-heavy-duty-replacement-office-chair-swivel-tilt-control-seat
store_origin: KR
region: South Korea
---

# Supports up to 500 lbs 6" x 10.2" mounting hole pattern Heavy-duty alloy steel build chairpartsonline Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6" x 10.2" Mounting Holes - S2979-HD Black

**Brand:** chairpartsonline
**Price:** ₩316863
**Availability:** ✅ In Stock

## Summary

> 💺 Upgrade your throne with heavy-duty precision and effortless control!

## Quick Answers

- **What is this?** chairpartsonline Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6" x 10.2" Mounting Holes - S2979-HD Black by chairpartsonline
- **How much does it cost?** ₩316863 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/297690815-chairpartsonline-heavy-duty-replacement-office-chair-swivel-tilt-control-seat)

## Best For

- chairpartsonline enthusiasts

## Why This Product

- Trusted chairpartsonline brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lock & Relax:** Intuitive tilt lock lever lets you lock or unlock chair tilt instantly, empowering your posture control.
- • **Built to Last:** Heavy-duty alloy steel frame engineered for maximum durability and long-term reliability.
- • **Universal Fit:** Precision 6" x 10.2" mounting holes ensure seamless compatibility with a wide range of office and executive chairs.
- • **Customizable Comfort:** Twist hand wheel lets you fine-tune backward tilt tension to match your ergonomic needs perfectly.
- • **Effortless Adjustments:** Single lever gas cylinder activation for smooth, one-touch height control—no hassle, just comfort.

## Overview

The chairpartsonline S2979-HD is a robust replacement tilt control mechanism designed for office chairs, featuring a heavy-duty alloy steel construction rated to support up to 500 lbs. It offers a universal 6" x 10.2" mounting hole pattern, single-lever gas lift height adjustment, tilt lock functionality, and adjustable backward tilt tension, making it the perfect upgrade for restoring or enhancing your office seating experience.

## Description

chairpartsonline Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6" x 10.2" Mounting Holes - S2979-HD Black

## Features

- Heavy duty replacement office chair tilt mechanism with 10.2" long x 6" wide screw mounting hole pattern
- Heavy duty - rated up to 500 lbs.
- Single lever for gas cylinder height activation - Accepts standard tapered gas lift cylinders
- Tilt control - push lever in to lock tilt, pull out to unlock
- Twist hand wheel to tighten or loosen (adjust) backward tilt tension

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | chairpartsonline |
| Model Number | S2979-HD |
| Color | Black |
| Package Dimensions | 37.39 x 35.28 x 14.2 cm; 3.69 kg |
| Material | Alloy Steel |
| Special Features | Swivel |
| Item Weight | 3.69 Kilograms |

## Product Details

- **Brand:** chairpartsonline
- **Colour:** Black
- **Material:** Alloy Steel
- **Size:** 10.2" x 6"
- **Item weight:** 3.69 kg

## Images

![chairpartsonline Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6" x 10.2" Mounting Holes - S2979-HD Black - Image 1](https://m.media-amazon.com/images/I/71ZXT8lGgaL.jpg)
![chairpartsonline Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6" x 10.2" Mounting Holes - S2979-HD Black - Image 2](https://m.media-amazon.com/images/I/81nvfyyoNfL.jpg)
![chairpartsonline Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6" x 10.2" Mounting Holes - S2979-HD Black - Image 3](https://m.media-amazon.com/images/I/41H+LsiqIKL.jpg)

## Questions & Answers

**Q: does gas lift come with metal seat**
A: Usuall not, sold separately since gas lift can wear out before lift etc.

**Q: my less than a year old office chair tilts to the right ... {grrrrr-!}  will this heavy duty office chair swivel make it straight again???**
A: As long as the issue you are having has to do with the metal of the swivel being broken in some way. Yes it should fix that issue if it doesn't have to do with your chair base being bent or the rollers (wheels) being broken or bent ether. I have had 2 different office chairs have the metal plate of the swivel crack or break and have had the cross bar in the middle of it break as well. This issues have caused my chairs to also lean to the side or forward. Replacing it with this will fix those issues. Just make sure that the screw/bolt holes are the right distance apart for your chair. Make sure to measure it on your chair. Just flip it over and use a tape measure check the distance between them from side to side and the distance from the front set of holes to the back set of holes as well. Some chairs have different hole positions but many are the same. If your bolts heads are to narrow get some large washers to help fix that issue too.

**Q: Does it come with hold-down bolts? If not, where can I get them?**
A: We dont provide the bolts/screws for mounting, since the industry did not standardize on size. The most common size used is 1/4-20 type. Some manufacturers also use metric  bolts.  Ace Hardware sells both types of bolts in different lengths.

**Q: My swivel plate is exact;y 10" x 6". should fit i assume. what is the significant of the 2.5" inner hole margin? mine is 1.25" only.**
A: Yes as far as fitting, the mounting holes are oversized and there is approx 3/16” leeway, so it will mount on an exact 6x10 holes just fine. The 2 holes in the back of the mechanism are important as 2 screws to mount the back post go through those holes on some model chairs. If your back post is mounted directly on the seat not requiring those holes, then you dont need to worry about it david

## Frequently Bought Together

- Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6" x 10.2" Mounting Holes - S2979-HD Black
- DOZYANT Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) Universal Size Fits Most Executive Office Chairs, Highest End Class 4

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**Shop now:** [https://www.desertcart.kr/products/297690815-chairpartsonline-heavy-duty-replacement-office-chair-swivel-tilt-control-seat](https://www.desertcart.kr/products/297690815-chairpartsonline-heavy-duty-replacement-office-chair-swivel-tilt-control-seat)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-27*