---
product_id: 13721360
title: "Dorman 800-605 Transmission Line Connector With 3/8 Tube X 5/8-18 In. Thread Compatible with Select Models"
brand: "dorman"
price: "$17.66"
currency: USD
in_stock: true
reviews_count: 9
category: "Dorman"
url: https://www.desertcart.us/products/13721360-dorman-800-605-transmission-line-connector-with-3-8-tube
store_origin: US
region: United States of America
---

# 3/8" tube x 5/8-18 thread precision fit Limited lifetime warranty assurance Pressure-tested for leak-free durability Dorman 800-605 Transmission Line Connector With 3/8 Tube X 5/8-18 In. Thread Compatible with Select Models

**Brand:** dorman
**Price:** $17.66
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your ride’s cooling game with leak-proof confidence!

## Quick Answers

- **What is this?** Dorman 800-605 Transmission Line Connector With 3/8 Tube X 5/8-18 In. Thread Compatible with Select Models by dorman
- **How much does it cost?** $17.66 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/13721360-dorman-800-605-transmission-line-connector-with-3-8-tube)

## Best For

- dorman enthusiasts

## Why This Product

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

## Key Features

- • **Durable Build:** Crafted from premium nitrile rubber and quality materials for long-lasting reliability
- • **Precision OEM Fit:** Seamlessly replaces original connector for flawless compatibility
- • **Shop-Ready Essential:** A must-have connector for any transmission oil cooler service or repair
- • **Leak-Free Performance:** Rigorously pressure tested to keep your transmission cooler sealed tight
- • **Verified Vehicle Compatibility:** Use the garage tool to confirm perfect fit before purchase

## Overview

The Dorman 800-605 Transmission Line Connector offers a precise 3/8" tube by 5/8-18 thread fit, engineered from durable nitrile rubber and quality materials. Pressure-tested for leak-free performance, it ensures reliable transmission oil cooler connections. Backed by a limited lifetime warranty and verified for compatibility with select vehicle models, this connector is an essential, professional-grade replacement part for maintaining optimal transmission cooling.

## Description

Made of quality materials, this automatic transmission oil cooler line connector matches the fit and function of a damaged original equipment connector to restore leak-free performance between the transmission and the oil cooler.

Review: Compatible with radiator on my 2000 Buick Lesabre 3.8 - The Jiffy Clips holding transmission lines connected sometimes cannot be removed, even using the correct tool. I got three of the four clips on my lines off, but for the last I had to cut the pipe with a Dremel cutoff wheel and then remove this fitting from the radiator using a socket wrench. The factory fitting is extremely tight in the radiator and take a lot of force to unthread and remove from the radiator. However, with sufficient torque the fitting will come out without damaging the radiator. A LOT of torque to remove. These Dorman replacement fitting come with thread sealant already installed, and the thread right in easily. The standard GM transmission line metal pipes fit right in and seal properly. Note: It may not be obvious, but the Jiffy Clips are designed to not have to be removed. The removal tool fits around the pipe and spreads the clips without removing them. The pipe pulls out through the removal tool. To connect the pipe to the fitting, just push it in with the Jiffy Clip already in place. It will go in and lock.
Review: Tru cool 40k 2011 Sierra - Good product seems to work well, fit is perfect for 2011 GMC Sierra trans cooler lines with a tru cool 40k cooler.

## Features

- Quality replacement - this transmission cooler connector matches the fit and function of the original equipment connector
- Durable construction - this oil cooler line connector is made of quality materials for a precise fit and leak-free durability
- Performance tested - this connector has been rigorously pressure tested to ensure reliable performance
- Ideal shop supply - this connector is recommended to have on hand any time service is being performed on the transmission oil cooler line
- Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000EPYHVO |
| Best Sellers Rank | #44,185 in Automotive ( See Top 100 in Automotive ) #8 in Automotive Replacement Transmission Cooling Lines |
| Brand Name | Dorman |
| Customer Reviews | 4.2 4.2 out of 5 stars (374) |
| Global Trade Identification Number | 00019495026440 |
| Included Components | ACCESSORIES |
| Item Dimensions L x W | 0.84"L x 0.67"W |
| Item Length | 0.84 Inches |
| Item Type Name | Accessories |
| Item Weight | 0.06 Pounds |
| Manufacturer | Dorman Products |
| Manufacturer Warranty Description | Limited Lifetime Warranty |
| Material Type | Nitrile Rubber |
| Nominal Wall Thickness | 0.298 inches |
| Outside Diameter | 0.67 Inches |
| UPC | 019495026440 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Dorman
- **Global Trade Identification Number:** 00019495026440
- **Item Length:** 0.84 Inches
- **Item Weight:** 0.06 Pounds
- **Manufacturer:** Dorman Products
- **Material:** Nitrile Rubber
- **Nominal Wall Thickness:** 0.298 inches
- **Outside Diameter:** 0.67 Inches
- **Product Dimensions:** 0.84"L x 0.67"W
- **UPC:** 019495026440

## Images

![Dorman 800-605 Transmission Line Connector With 3/8 Tube X 5/8-18 In. Thread Compatible with Select Models - Image 1](https://m.media-amazon.com/images/I/71x7UNMCd6L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What is the male thread size on this fitting?**
A: This has 5/8-18 thread.

**Q: What size O Ring goes inside this fitting?**
A: It better to buy new fitting 8 bucks

**Q: does this include o-rings?**
A: Yes the o-ring is inside the fitting.

**Q: I have a 2002 chevy 2500hd will this work for the engine oil cooler lines on the radiator?**
A: Sorry no they will not.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Compatible with radiator on my 2000 Buick Lesabre 3.8
*by E***E on October 12, 2023*

The Jiffy Clips holding transmission lines connected sometimes cannot be removed, even using the correct tool. I got three of the four clips on my lines off, but for the last I had to cut the pipe with a Dremel cutoff wheel and then remove this fitting from the radiator using a socket wrench. The factory fitting is extremely tight in the radiator and take a lot of force to unthread and remove from the radiator. However, with sufficient torque the fitting will come out without damaging the radiator. A LOT of torque to remove. These Dorman replacement fitting come with thread sealant already installed, and the thread right in easily. The standard GM transmission line metal pipes fit right in and seal properly. Note: It may not be obvious, but the Jiffy Clips are designed to not have to be removed. The removal tool fits around the pipe and spreads the clips without removing them. The pipe pulls out through the removal tool. To connect the pipe to the fitting, just push it in with the Jiffy Clip already in place. It will go in and lock.

### ⭐⭐⭐⭐⭐ Tru cool 40k 2011 Sierra
*by S***3 on November 26, 2019*

Good product seems to work well, fit is perfect for 2011 GMC Sierra trans cooler lines with a tru cool 40k cooler.

### ⭐⭐⭐⭐⭐ 2014 GMC 1500
*by F***G on February 3, 2025*

I ended up using these to add a transmission cooler to my 2014 GMC Sierra 1500. I did need to use a rubber washer inside because I was using a brass connector.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-14*