---
product_id: 809212147
title: "2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8\" LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE"
brand: "pacific performance engineering"
price: "$185.71"
currency: USD
in_stock: true
reviews_count: 5
category: "Pacific Performance Engineering"
url: https://www.desertcart.us/products/809212147-2015-2018-silverado-sierra-1500-w-8l90-transmission-and-3
store_origin: US
region: United States of America
---

# 2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8" LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE

**Brand:** pacific performance engineering
**Price:** $185.71
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8" LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE by pacific performance engineering
- **How much does it cost?** $185.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/809212147-2015-2018-silverado-sierra-1500-w-8l90-transmission-and-3)

## Best For

- pacific performance engineering enthusiasts

## Why This Product

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

## Description

2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8 -inch LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE

Review: 💯 - 💯
Review: . - Works as advertised. Would recommend

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D96YSS9D |
| Best Sellers Rank | #78,038 in Automotive ( See Top 100 in Automotive ) #187 in Transmission Fluids |
| Brand | Pacific Performance Engineering |
| Brand Name | Pacific Performance Engineering |
| Customer Reviews | 4.8 out of 5 stars 7 Reviews |
| Exterior Finish | Stainless Steel |
| Manufacturer | Pacific Performance Engineering |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Number of Ports | 2 |
| Outlet Connection Size | 0.38 Inches |
| Outlet Connection Type | NPT |
| Set Name | 2015-2018 Silverado/Sierra 1500 8L90 Transmission Set |
| Size | 3/8 Inch |
| Specification Met | ASTM, ASME, ANSI |
| Thread Size | 3/8 inch |
| Thread Type | 3/8 inch |
| UPC | 840171223149 |
| Unit Count | 1.0 Count |
| Valve Type | Thermal Bypass Valve |

## Images

![2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8" LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE - Image 1](https://m.media-amazon.com/images/I/512C1IA0cxL.jpg)
![2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8" LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE - Image 2](https://m.media-amazon.com/images/I/61WKa1bFwXL.jpg)
![2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8" LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE - Image 3](https://m.media-amazon.com/images/I/61iY6xYEzQL.jpg)
![2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8" LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE - Image 4](https://m.media-amazon.com/images/I/61EHc92rAUL.jpg)
![2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8" LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE - Image 5](https://m.media-amazon.com/images/I/512v5EuhtqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 💯
*by J***. on April 18, 2026*

💯

### ⭐⭐⭐⭐⭐ .
*by G***Z on February 27, 2026*

Works as advertised. Would recommend

### ⭐⭐⭐⭐ Pressure test wasn't much better
*by J***N on March 15, 2026*

Easy install. Seems to work great while empty with temps hovering around 160°. Towing an empty 24' enclosed trailer at 80 mph on a gradual uphill grade temps still got to 190°

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/809212147-2015-2018-silverado-sierra-1500-w-8l90-transmission-and-3](https://www.desertcart.us/products/809212147-2015-2018-silverado-sierra-1500-w-8l90-transmission-and-3)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-27*