---
product_id: 574261339
title: "1409KMT4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up"
brand: "1409kmt"
price: "322.39 DT"
currency: TND
in_stock: true
url: https://www.desertcart.tn/products/574261339-1409kmt4l60e-4l60-4l65e-4l70e-4th-gear-super-hold-dual-servo
store_origin: TN
region: Tunisia
---

# Easy in-vehicle installation Fits GM 4L60E series 1982+ 40% more apply surface area 1409KMT4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up

**Brand:** 1409kmt
**Price:** 322.39 DT
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your GM transmission game with unstoppable 4th gear grip!

## Quick Answers

- **What is this?** 1409KMT4L60E 4L60 4L65E 4L70E 4th Gear Super Hold Dual Servo Kit SONNAX 77767K 1982-up by 1409kmt
- **How much does it cost?** 322.39 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/574261339-1409kmt4l60e-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

- • **Broad Compatibility:** Seamlessly fits all GM 4L60, 4L60E, 4L65E, 4L70E transmissions from 1982 onward
- • **Trusted Reliability:** Backed by a 1-year warranty and expert support for peace of mind
- • **Plug-and-Play Upgrade:** Designed for quick, hassle-free in-vehicle installation—no transmission removal needed
- • **Enhanced Shift Quality:** Eliminates common 3-4 shift issues and band failures 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) is engineered to boost the holding power of GM 4L60 series transmissions by 40%, resolving shift quality issues and band failures common in performance applications. Compatible with all 4L60, 4L60E, 4L65E, and 4L70E models from 1982 onward, this machined servo kit installs easily in-vehicle and comes with a 1-year warranty, making it the ultimate upgrade for enthusiasts seeking reliable, smooth 3-4 shifts.

## Description

1409KMT4L60E 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 |
| Package Dimensions | 9.7 x 9.19 x 6.4 cm; 558 g |
| Item model number | KMT-OT001426 |
| Exterior | Machined |
| Manufacturer Part Number | KMT-OT001426 |
| Item Weight | 558 g |

## Images

![1409KMT4L60E 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)
![1409KMT4L60E 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)
![1409KMT4L60E 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)
![1409KMT4L60E 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)
![1409KMT4L60E 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)

## 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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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-06*