---
product_id: 174477715
title: "70387 Auxiliary Fuel Tank 40 Gal"
brand: "rds mfg inc"
price: "VT452622"
currency: VUV
in_stock: true
reviews_count: 8
category: "Rds Mfg Inc"
url: https://www.desertcart.vu/products/174477715-70387-auxiliary-fuel-tank-40-gal
store_origin: VU
region: Vanuatu
---

# 70387 Auxiliary Fuel Tank 40 Gal

**Brand:** rds mfg inc
**Price:** VT452622
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 70387 Auxiliary Fuel Tank 40 Gal by rds mfg inc
- **How much does it cost?** VT452622 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/174477715-70387-auxiliary-fuel-tank-40-gal)

## Best For

- rds mfg inc enthusiasts

## Why This Product

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

## Description

Most RDS transfer tanks also provide auxiliary fueling. RDS offers a full assortment of tanks in various capacities and dimensions to fit your needs. Auxiliary tanks connect to your vehicle’s fuel tank. Diesel fuel can “gravity feed” from the bottom of your RDS tank. An optional Diesel Install Kit contains the necessary items to economically and easily connect your RDS tank to your OEM fuel tank. Gasoline auxiliary fueling is allowed, if siphoned from the top of the tank by using an electric fuel pump.

Review: High quality diesel aux. tank - This tank will not fit in a 2009 or 2017 short bed ram truck. I had to do some hefty wheel well modifications which is what I was trying to avoid. It was my fault for ordering before getting the proper measurements from the tank manufacturing company. The quality of this tank is excellent. After modifications and installing the gravity feed diesel transfer kit I filled it up and it worked great. Very high quality build with some great welds.
Review: Good tank but filler location could be better - The tank itself is not bad and works well, but I expected the diesel fill location (the filler neck) to be positioned differently. It’s a bit inconvenient the way it’s placed. Overall, still a decent tank, just not exactly what I imagined.

## Features

- Product Type :Auto Accessory
- Package Dimensions :22.86 Cm L X50.8 Cm W X152.4 Cm H
- Country Of Origin :United States
- Package Weight :84.0Lbs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07GNJR7GB |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #918,676 in Automotive ( See Top 100 in Automotive ) #886 in Automotive Replacement Fuel Tanks |
| Brand Name | RDS MFG INC |
| Capacity | 40 Gallons |
| Compatible with Vehicle Type | Truck |
| Customer Reviews | 4.3 4.3 out of 5 stars (31) |
| Exterior Finish | Machined |
| Fit Type | Vehicle Specific |
| Fuel Type | Diesel |
| Global Trade Identification Number | 00699300703874 |
| Included Components | Fuel, System, Fuel |
| Item Dimensions | 60 x 20 x 9 inches |
| Item Type Name | Auxiliary Fuel Tank 40 Gal |
| Item Weight | 84 Pounds |
| Manufacturer | RDS MFG INC |
| Manufacturer Part Number | 70387 |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material Type | Alloy Steel |
| Model Number | 70387 |
| Product Grade | like new |
| UPC | 699300703874 |

## Product Details

- **Brand:** RDS MFG INC
- **Exterior Finish:** Machined
- **Item dimensions L x W x H:** 60 x 20 x 9 inches
- **Material:** Alloy Steel
- **Vehicle Service Type:** Truck

## Images

![70387 Auxiliary Fuel Tank 40 Gal - Image 1](https://m.media-amazon.com/images/I/41TjJ757gVL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ High quality diesel aux. tank
*by J***E on October 25, 2020*

This tank will not fit in a 2009 or 2017 short bed ram truck. I had to do some hefty wheel well modifications which is what I was trying to avoid. It was my fault for ordering before getting the proper measurements from the tank manufacturing company. The quality of this tank is excellent. After modifications and installing the gravity feed diesel transfer kit I filled it up and it worked great. Very high quality build with some great welds.

### ⭐⭐⭐⭐ Good tank but filler location could be better
*by A***A on December 9, 2025*

The tank itself is not bad and works well, but I expected the diesel fill location (the filler neck) to be positioned differently. It’s a bit inconvenient the way it’s placed. Overall, still a decent tank, just not exactly what I imagined.

### ⭐⭐⭐⭐⭐ No more stopping for diesel
*by J***R on April 14, 2020*

Love the tank! I also got the install kit for my 2011 F-250, both work great! Side note--If the truck is going to sit for more than a day, close the shut off valve.

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**Shop now:** [https://www.desertcart.vu/products/174477715-70387-auxiliary-fuel-tank-40-gal](https://www.desertcart.vu/products/174477715-70387-auxiliary-fuel-tank-40-gal)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-02*