---
product_id: 10086667
title: "Sonnax Super 4th Servo"
brand: "sonnax"
price: "$5783"
currency: MXN
in_stock: true
reviews_count: 8
url: https://www.desertcart.mx/products/10086667-sonnax-super-4th-servo
store_origin: MX
region: Mexico
---

# D-ring seals Dual-piston design 40% more apply Sonnax Super 4th Servo

**Brand:** sonnax
**Price:** $5783
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Ride with Sonnax Super 4th Servo!

## Quick Answers

- **What is this?** Sonnax Super 4th Servo by sonnax
- **How much does it cost?** $5783 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/10086667-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

- • **Seal the Deal:** D-ring seals ensure zero pressure loss, keeping your performance at peak levels.
- • **Unleash Unmatched Power:** Experience a 40% increase in holding strength with our patented dual-piston design.
- • **Versatile Compatibility:** Seamlessly integrates with OE, Corvette, or Sonnax 2nd Gear servo assemblies.
- • **Engineered for Excellence:** Designed for professionals who demand reliability and performance.
- • **Complete Assembly Included:** Comes with everything you need: Super Hold Servo Assembly and Steel Washer.

## Overview

The Sonnax Super 4th Servo features a patented dual-piston design that delivers 40% more apply force for enhanced holding power. Equipped with D-ring seals to prevent pressure loss, this assembly is compatible with OE, Corvette, or Sonnax 2nd Gear servo assemblies, ensuring a complete and reliable upgrade for your vehicle.

## Description

Sonnax Super 4th Servo

## Images

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

## Customer Reviews

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

I ordered this kit with the Sonnax super hold 2nd servo and the Sonnax boost valve kit. This was installed in a Caprice wagon with about 80k miles on the transmission. I installed them all at the same time, so I don't know how much of the improvement came from each of these parts. The shift improvement was noticeable to me, but definitely not harsh. My wife did not seem to notice or at least did not complain. So if you're looking for neck snapping shifts from your 4L60, you will need to do more than just these 3 parts.In vehicle installation for this and the 2nd super servo was not easy. I had to remove the trans crossmember and lower the transmission as far as it would go. I also pulled the passenger side cat. Clearance was still very tight and this was not an easy install. Installation in a transmission removed from the vehicle would have been pretty simple.

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

I bought this along with the Sonnax 2nd gear super hold kit. My 03 Silverado, 2nd gear was starting to slip, but 4th seemed fine. 1st thing I did was change fluid completely(wasn't too bad) and the filter with the AC Delco Dexron IV. This didn't help much. I figured I'd spend a bit more and see if these kits would work instead of a costly rebuild. They did, and the truck has a much quicker shift too. Wasn't a quick easy job, but well worth it. Hopefully it lasts a while. Machining quality is very good. These are high quality parts for sure.

### ⭐⭐⭐⭐⭐ 08 silverado 4L60E
*by G***E on November 17, 2023*

4th gear actually engages firmly now instead of the sluggish shift Especially at WOT. Much needed if you are rebuilding a fresh 4L60E

## 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 Mexico*
*Store origin: MX*
*Last updated: 2026-01-22*