---
product_id: 274285493
title: "Sonnax Super 4th Servo"
brand: "sonnax"
price: "€ 537.97"
currency: EUR
in_stock: false
reviews_count: 5
url: https://www.desertcart.fr/products/274285493-sonnax-super-4th-servo
store_origin: FR
region: France
---

# 40% more surface area Compatible with OE, Corvette & Sonnax 2nd gear servos Enhanced holding power Sonnax Super 4th Servo

**Brand:** sonnax
**Price:** € 537.97
**Availability:** ❌ Out of Stock

## Summary

> ⚙️ Upgrade your shift game with the Sonnax Super 4th Servo — grip like a pro!

## Quick Answers

- **What is this?** Sonnax Super 4th Servo by sonnax
- **How much does it cost?** € 537.97 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/274285493-sonnax-super-4th-servo)

## Best For

- sonnax enthusiasts

## Why This Product

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

## Key Features

- • **Lightweight Yet Mighty:** At just 50g, it boosts performance without adding bulk.
- • **Trusted Sonnax Quality:** Backed by a brand synonymous with transmission excellence.
- • **Maximized Grip, Minimized Slip:** 40% increased surface area delivers unbeatable holding strength.
- • **Universal Fit for Elite Builds:** Seamlessly integrates with OE, Corvette, and Sonnax performance 2nd gear servo assemblies.
- • **Precision Steel Washer Included:** Engineered for durability and consistent performance under pressure.

## Overview

The Sonnax Super 4th Servo features 40% more surface area for superior holding power, compatible with OE, Corvette, and Sonnax 2nd gear servo assemblies. Lightweight at 50g, it includes a precision steel washer and is engineered for enhanced transmission performance and reliability.

## Description

sonnax 77767K 4th Gear Super Hold Dual Servo Assembly Replacement Seal Kit, 77767K-SK Transmission - General Motors: 4L60, 4L60-E, 4L65-E, 4L70-E High Performance Transmission - General Motors: 4L60, 4L60-E, 4L65-E, 4L70-E

Review: Nice improvement. Tricky install without removing trans.
Review: Fixed my issue!

## Features

- 40% More surface area for greater holding power
- Can be used with OE, Corvette or Sonnax performance 2nd gear servo assemblies
- Servo Assembly, Steel Washer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Sonnax |
| Brand | Sonnax |
| Package Dimensions | 11.43 x 11.43 x 5.08 cm; 50 g |
| Manufacturer reference | 77767K |
| Manufacturer Part Number | 77767K |
| OEM Part Number | 62-77767K |
| Item Weight | 50 g |

## Images

![Sonnax Super 4th Servo - Image 1](https://m.media-amazon.com/images/I/41e5LjMGPTL.jpg)
![Sonnax Super 4th Servo - Image 2](https://m.media-amazon.com/images/I/51RUfPAI9pL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice improvement. Tricky install without removing trans.
*by L***T on 3 March 2018*



### ⭐⭐⭐⭐⭐ Fixed my issue!
*by Z***6 on 11 January 2020*



### ⭐⭐⭐⭐⭐ It works great, can't really tell a lot of difference in ...
*by M***R on 24 May 2016*



## Frequently Bought Together

- Sonnax Super 4th Servo
- 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 France*
*Store origin: FR*
*Last updated: 2026-02-23*