---
product_id: 477657230
title: "Sure Cool System Upgrade STL010"
brand: "wit whatever it takes transmission parts, inc"
price: "€ 82.12"
currency: EUR
in_stock: true
reviews_count: 13
category: "Wit Whatever It Takes Transmission Parts, Inc"
url: https://www.desertcart.fr/products/477657230-sure-cool-system-upgrade-stl010
store_origin: FR
region: France
---

# Instant fluid level accuracy Built-in safety bypass tech Reduces operating temps by 20% Sure Cool System Upgrade STL010

**Brand:** wit whatever it takes transmission parts, inc
**Price:** € 82.12
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay cool, drive smarter — don’t let heat slow you down!

## Quick Answers

- **What is this?** Sure Cool System Upgrade STL010 by wit whatever it takes transmission parts, inc
- **How much does it cost?** € 82.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/477657230-sure-cool-system-upgrade-stl010)

## Best For

- wit whatever it takes transmission parts, inc enthusiasts

## Why This Product

- Trusted wit whatever it takes transmission parts, inc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Integrated safety bypass minimizes overheating risks during heavy loads.
- • **Instant Insight:** Check fluid levels immediately—no warm-up wait, no guesswork.
- • **Cooler by Design:** Slash your transmission temps by up to 20% for peak performance under pressure.
- • **Extended Lifespan:** Boost your ATF life with smarter cooling and reduced thermal stress.
- • **Effortless Upgrade:** Simple installation that transforms your ride’s reliability and efficiency.

## Overview

The Sure Cool System Upgrade STL010 by Superior is a cutting-edge transmission cooling solution designed to reduce operating temperatures by up to 20%, featuring a built-in safety bypass and immediate fluid level checks without warm-up. Trusted by thousands with a 4.8-star rating, it extends ATF life and lowers overheating risk, making it a must-have upgrade for high-performance and daily drivers alike.

## Description

Buy WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC Superior 6L80 6L90 8L90 Sure Cool System Upgrade STL010: Hard Parts - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Easy to replace and works great - Works perfectly, lowered temp a good 40 degrees. Super easy to install.
Review: It really works. - Installation was tricky for me but,... simple enough to accomplish. My transmission temps gave been lowered between 60-90° from high to low ambient temperatures. In warmer weather I was getting 191-197° in traffic and now it is running 100-112° in cold weather and 120-136° in warmer weather. It Works. GET IT, INSTALL IT.

## Features

- Built in safety bypass Immediate cooler fill.
- Immediate accurate fluid level check without warm-up cycle
- Reduced average operating temperatures by as much as 20%
- Reduced risk of overheat while under load, Increased ATF life.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BCL9M23T |
| Best Sellers Rank | #6,979 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Transmission Hard Parts |
| Brand | WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,451) |
| Date First Available | August 31, 2022 |
| Item Weight | 3.87 ounces |
| Item model number | STL010 |
| Manufacturer | Superior |
| Manufacturer Part Number | STL010 |
| Model | COOLER FLOW BYPASS |
| Product Dimensions | 4 x 4 x 1 inches |

## Images

![Sure Cool System Upgrade STL010 - Image 1](https://m.media-amazon.com/images/I/61C9sS0UHhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to replace and works great
*by K***T on March 3, 2026*

Works perfectly, lowered temp a good 40 degrees. Super easy to install.

### ⭐⭐⭐⭐⭐ It really works.
*by E***N on December 15, 2025*

Installation was tricky for me but,... simple enough to accomplish. My transmission temps gave been lowered between 60-90° from high to low ambient temperatures. In warmer weather I was getting 191-197° in traffic and now it is running 100-112° in cold weather and 120-136° in warmer weather. It Works. GET IT, INSTALL IT.

### ⭐⭐⭐⭐⭐ Good for the money.
*by S***K on March 24, 2026*

This was not that hard to install, transmission running 30 degrees cooler now, good value for the money

## Frequently Bought Together

- WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC 6L80 6L90 8L90 Sure Cool System Upgrade STL010
- atp automotive B-239 Automatic Transmission Filter Kit for GM Optional 6L80 Heavy-Duty 6-Speed Transmission
- ACDelco GM Original Equipment 10-9395 Dexron VI Automatic Transmission Fluid - 1 gal

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-05-06*