---
product_id: 45036835
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: "143774CFA"
currency: XOF
in_stock: true
reviews_count: 8
category: "Chairpartsonline"
url: https://www.desertcart.sn/products/45036835-chairpartsonline-heavy-duty-replacement-office-chair-swivel-tilt-control-seat
store_origin: SN
region: Senegal
---

# 10.2" x 6" adjustable mounting holes Smooth swivel & tilt control 500 lbs heavy-duty rating chairpartsonline Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6" x 10.2" Mounting Holes - S2979-HD Black

**Brand:** chairpartsonline
**Price:** 143774CFA
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your office 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?** 143774CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/45036835-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

- • **Precision Fit:** Standard 10.2" x 6" mounting hole pattern with slotted holes for easy, adjustable installation.
- • **Built to Endure:** Supports up to 500 lbs with robust alloy steel construction for unmatched durability.
- • **Smooth Operator:** Twist hand wheel lets you fine-tune backward tilt tension for ergonomic support all day.
- • **Effortless Control:** Single lever gas lift activation and intuitive tilt lock/unlock for personalized comfort.
- • **Upgrade Your Throne:** Heavy gauge metal outperforms OEM parts—fix wobble and restore your chair’s premium feel.

## Overview

This chairpartsonline heavy-duty replacement tilt mechanism is engineered for professional-grade office chairs, supporting up to 500 lbs. Featuring a standardized 10.2" x 6" mounting hole pattern with adjustable slots, it ensures a perfect fit for most chairs. The single-lever gas lift activation and twist hand wheel for tilt tension provide smooth, customizable ergonomic control. Crafted from thick alloy steel, it outperforms OEM parts, making it the ultimate fix for restoring stability and comfort to your workspace.

## Description

This very popular replacement office chair tilt control mechanism works great for restoring or repairing many office chairs, task chairs, and executive chairs that have the same screw mounting hole pattern

Review: Very Heavy Duty, Way Better Than OEM - This tilt bracket is just what you need to repair your cracked original bracket from whatever brand of chair that you own. The mounting holes on almost all chairs are pretty much standardized, so this bracket will fit without issue. It does have slotted holes, so there is room for adjustment if your chair is an oddball. No instructions are included, just the bracket in a thick plastic bag, but if you are attempting this you probably have a good idea of what you need to do already. The bracket construction is definitely better than stock, with a metal gauge at least two times that of the OEM bracket. Installation-wise, once you get the old bracket off the lift cylinder, you're set. Just screw this new bracket to your chair bottom and set it on the cylinder post. The problem is getting the old bracket off the lift cylinder post, lol. These tilt brackets use a taper fit between the bracket socket and the lift cylinder post; when you set it on the lift cylinder post it wedges itself in place and becomes almost inseparable. In order to release the bracket from the lift cylinder post, you can do a couple of things: 1. Use a pipe wrench and a hammer - grip the cylinder post with a pipe wrench, then use a hammer to whack the bracket in an attempt to spin it and break the wedge fit. or 2. Use a rotary tool and a cut off wheel to slice a slot in the tilt bracket's socket and relieve the tension on the wedge fit. I chose option two, see the pictures. Don't worry if you nick the lift cylinder post a bit like I did, it isn't a sealing surface and will be inside the new bracket's socket when you re-assemble the chair. You also might want to take the opportunity to clean and re-grease the swivel bearing in the bottom of your lift cylinder, my chair was kind of rough and slow on its swivel due to grooves that had worn into the two washers that the bearing rides in between, as well as hardened grease. I pulled the cylinder apart - there is an inner, sealed cylinder and an outer cylinder that it slides into. The washers and bearing sit on the tip of the inner cylinder's post, down in the bottom of the outer cylinder. I wiped off all of the old, hardened grease and re-greased it with wheel bearing grease. I also flipped over both of the washers so that the bearing now rides on the smooth, unworn sides. The chair now spins smooth as butter, just like the day I bought it. Use plenty of grease when you do this, that way the bearing and washers don't fall off the inner cylinder post when you reinsert it into the outer cylinder. You can also turn the chair's star base with the outer cylinder still in it upside down to make this step easier.
Review: Thicker is better - Way better than the seat control that FAILED from new in less than 2 yrs. Ordered to replace the seat control and my T3 Rush and it did the job. Installed in 5 min and fixed the wobble of the seat. Everything on this one is more robust than than the factory one from corsair. Good for the price!

## 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
- Does not come with hardware, please use current chairs existing hardware
- 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 |
|---------------|-------|
| ASIN | B072YFNQSR |
| Additional Features | Swivel |
| Age Range Description | Adult |
| Arm Style | Armless |
| Back Style | Solid Back |
| Best Sellers Rank | #174,126 in Office Products ( See Top 100 in Office Products ) #418 in Managerial Chairs & Executive Chairs |
| Brand | chairpartsonline |
| Brand Name | chairpartsonline |
| Color | Black |
| Customer Reviews | 4.7 out of 5 stars 1,148 Reviews |
| Fill Material | Foam |
| Frame Material Type | Alloy Steel |
| Furniture Base Movement | Swivel |
| Furniture Finish | Black |
| Indoor Outdoor Usage | Indoor |
| Item Weight | 8.1 Pounds |
| Leg Style | Straight Leg |
| Manufacturer | chairpartsonline |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Maximum Weight Recommendation | 500 Pounds |
| Model Number | S2979-HD |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Reclining Position Count | 2 |
| Recommended Uses For Product | Indoor |
| Room Type | Office |
| Seat Depth | 10.2 inches |
| Seat Material | Steel-based material |
| Size | 10.2" x 6" |
| Surface Recommendation | Hard Floor |
| Tilting | Yes |
| UPC | 735201995830 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** chairpartsonline
- **Color:** Black
- **Material:** Alloy Steel
- **Size:** 10.2" x 6"
- **Item Weight:** 8.14 Pounds

## 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/41H+LsiqIKL.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/71ZXT8lGgaL.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/81nvfyyoNfL.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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very Heavy Duty, Way Better Than OEM
*by B***C on October 26, 2024*

This tilt bracket is just what you need to repair your cracked original bracket from whatever brand of chair that you own. The mounting holes on almost all chairs are pretty much standardized, so this bracket will fit without issue. It does have slotted holes, so there is room for adjustment if your chair is an oddball. No instructions are included, just the bracket in a thick plastic bag, but if you are attempting this you probably have a good idea of what you need to do already. The bracket construction is definitely better than stock, with a metal gauge at least two times that of the OEM bracket. Installation-wise, once you get the old bracket off the lift cylinder, you're set. Just screw this new bracket to your chair bottom and set it on the cylinder post. The problem is getting the old bracket off the lift cylinder post, lol. These tilt brackets use a taper fit between the bracket socket and the lift cylinder post; when you set it on the lift cylinder post it wedges itself in place and becomes almost inseparable. In order to release the bracket from the lift cylinder post, you can do a couple of things: 1. Use a pipe wrench and a hammer - grip the cylinder post with a pipe wrench, then use a hammer to whack the bracket in an attempt to spin it and break the wedge fit. or 2. Use a rotary tool and a cut off wheel to slice a slot in the tilt bracket's socket and relieve the tension on the wedge fit. I chose option two, see the pictures. Don't worry if you nick the lift cylinder post a bit like I did, it isn't a sealing surface and will be inside the new bracket's socket when you re-assemble the chair. You also might want to take the opportunity to clean and re-grease the swivel bearing in the bottom of your lift cylinder, my chair was kind of rough and slow on its swivel due to grooves that had worn into the two washers that the bearing rides in between, as well as hardened grease. I pulled the cylinder apart - there is an inner, sealed cylinder and an outer cylinder that it slides into. The washers and bearing sit on the tip of the inner cylinder's post, down in the bottom of the outer cylinder. I wiped off all of the old, hardened grease and re-greased it with wheel bearing grease. I also flipped over both of the washers so that the bearing now rides on the smooth, unworn sides. The chair now spins smooth as butter, just like the day I bought it. Use plenty of grease when you do this, that way the bearing and washers don't fall off the inner cylinder post when you reinsert it into the outer cylinder. You can also turn the chair's star base with the outer cylinder still in it upside down to make this step easier.

### ⭐⭐⭐⭐⭐ Thicker is better
*by K***. on December 1, 2025*

Way better than the seat control that FAILED from new in less than 2 yrs. Ordered to replace the seat control and my T3 Rush and it did the job. Installed in 5 min and fixed the wobble of the seat. Everything on this one is more robust than than the factory one from corsair. Good for the price!

### ⭐⭐⭐⭐⭐ Very strong replacement for my oversized Office Chair. Tip on Removing it From the Stick.
*by H***N on December 14, 2018*

I got this nice leather office chair a year or so ago. I guess it was manufactured for the big and tall market, but I got it because it was marked down. It is so big and heavy within a few months the tilt mechanism began to fail and eventually, the huge chair just flopped back and forth and I though one day it would just snap off like a stick and send me to the floor. I found this, it is very thick and very heavy. I installed it and have been using it for about 2 months now. I can tell it will hold up, if feels solid, and there is no lost motion anywhere in the tilt mechanism. The metal is so thick I do not think it will bend and I weigh about 200 lb. The old mechanism was bent in every direction . I wanted to add that I had no difficulty taking the chair off the mechanism, it is only held by 4 heavy duty screws. But I had a lot of trouble getting the mechanism off the stick. I was thinking I had to knock it off with impact from a hammer but that did not work. I read somewhere on the internet that you are supposed to put a pipe wrench or a large vice grip on the vertical stick. You are supposed to use your wrench to rotate the metal stick while you hold the mechanism still. One this old joint slips a little, all the friction is released and the mechanism just slips off, no problem. You may want to spray the socket with some WD-40 an hour before you do this. But it is very easy to separate it from your old tilt mechanism this way. I thought about this initially, but I was so afraid I would damage the surface of the stick because I though it was the hydraulic surface of the piston. It's not, the piston is inside this big silver pipe you are working with. A small scratch does not matter as it is not the surface that slips inside pressurized cylinder.

## 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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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-01-22*