---
product_id: 581925707
title: "4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up"
brand: "1409kmt"
price: "A$17"
currency: AUD
in_stock: true
reviews_count: 4
url: https://www.desertcart.com.au/products/581925707-4l60e-4l60-4l65e-4l70e-4th-gear-super-hold-dual-servo
store_origin: AU
region: Australia
---

# Easy in-vehicle installation Fits GM 4L60/4L65/4L70 transmissions 1982+ 40% more apply surface area 4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up

**Brand:** 1409kmt
**Price:** A$17
**Availability:** ✅ In Stock

## Summary

> ⚙️ Lock in power, shift like a pro – don’t get left behind!

## Quick Answers

- **What is this?** 4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up by 1409kmt
- **How much does it cost?** A$17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/581925707-4l60e-4l60-4l65e-4l70e-4th-gear-super-hold-dual-servo)

## Best For

- 1409kmt enthusiasts

## Why This Product

- Trusted 1409kmt brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Durability:** Backed by a 1-year warranty for peace of mind on every ride
- • **Broad Compatibility:** Seamlessly fits all GM 4L60, 4L60E, 4L65E, and 4L70E transmissions from 1982 onward
- • **Plug-and-Play Upgrade:** Simple in-vehicle install means less downtime, more driving
- • **Enhanced Shift Quality:** Eliminates poor 3-4 shift issues and band failure in performance vehicles
- • **Unmatched Holding Power:** 40% increased apply surface area for superior 4th gear hold

## Overview

The Sonnax 4th Gear Super Hold Dual Servo Kit (77767K) delivers 40% more apply surface area to dramatically improve holding power and shift quality in GM 4L60, 4L60E, 4L65E, and 4L70E transmissions from 1982 onward. Designed to fix common 3-4 shift issues and band failures, this easy-to-install kit is a must-have upgrade for performance enthusiasts seeking reliable, smooth gear transitions backed by a 1-year warranty.

## Description

4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up

## Features

- 4th Gear Super Hold Dual Servo Kit fits TH700R4 4L60E 4L65E 4L70E GM TRANSMISSION all varieties of these transmissions 1982-UP .
- Sonnax 4th Gear super hold dual servo kit 77767K features 40% more apply surface area for greater holding power in GM 4L60 (700-R4), 4L60-E, 4L65-E and 4L70-E units.
- Vehicles with these transmissions often exhibit poor 3-4 shift quality and experience band failure in performance applications.
- Combine this servo kit with Sonnax 2nd gear servo 77911-03K for unmatched holding power and shift performance that's an easy in-vehicle insta.
- 1 YEAR WARRANTY , Kindly do not hesitate to contact us back in the future if you feel that you need further assistance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | LANHO AUTO PARTS |
| Brand | 1409KMT |
| Model | KMT-OT001426 |
| Item Weight | 1.23 pounds |
| Package Dimensions | 3.82 x 3.62 x 2.52 inches |
| Item model number | KMT-OT001426 |
| Exterior | Machined |
| Manufacturer Part Number | KMT-OT001426 |

## Images

![4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up - Image 1](https://m.media-amazon.com/images/I/510dezNNj2L.jpg)
![4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up - Image 2](https://m.media-amazon.com/images/I/51kINADRInL.jpg)
![4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up - Image 3](https://m.media-amazon.com/images/I/5158NRe8V8L.jpg)
![4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up - Image 4](https://m.media-amazon.com/images/I/51bDrCnyA5L.jpg)
![4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up - Image 5](https://m.media-amazon.com/images/I/51rv3w-5NML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great upgrade
*by B***0 on March 15, 2024*

Great and easy upgrade for the 4l60E. Easy to install and you will notice the difference immediately

### ⭐ This is a KNOCK OFF.
*by A***R on January 8, 2025*

I verified with the original manufacturer. Do not trust the information on this listing.

### ⭐ Doesn’t fit
*by R***. on October 5, 2024*

The seals were the wrong size causing the servo not to travel correctly. In my case it’s a 10 hour job to remove them and I neither have the time or inclination to do that removal in triple digit heat.

## Frequently Bought Together

- 4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up
- 4L60 4L60E 4L65E 4L70E Transmission 2nd Gear Super Hold Servo Kit Sonnax
- Sonnax HD 2-3 Shift Valve

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**Shop now:** [https://www.desertcart.com.au/products/581925707-4l60e-4l60-4l65e-4l70e-4th-gear-super-hold-dual-servo](https://www.desertcart.com.au/products/581925707-4l60e-4l60-4l65e-4l70e-4th-gear-super-hold-dual-servo)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-21*