1. Truck Bed Parts Products
  2. sku: 22491736925359603
  3. RDS 70387

RDS Fuel Tank 699300703874

70387 Rds Rectangular Auxiliary Fuel Tank

( Brand: Rds ), ( Manufacturer Part Number: 70387 ), ( Product Type: Bed Accessories ), ( UPC: 699300703874 ), ( Fitment Type: Semi-universal ), ( Product Subtype: Fuel Transfer Tanks ), ( Tank Capacity: 48 Gallon ), ( Type: Rectangular Tanks ), ( Material: Aluminum ), ( Color: Silver ), ( Weight Capacity: 1-50 Gallons )

Review RDS Rectangular Auxiliary Fuel Tank

The **RDS 70387 Fuel Tank** is a high-performance, heavy-duty fuel storage solution engineered for demanding applications in industrial, agricultural, and commercial sectors. Designed with precision and built to last, this tank is crafted from **high-grade, corrosion-resistant materials**, ensuring exceptional durability and longevity even in harsh environmental conditions. Its robust construction features **reinforced walls and a seamless weld design**, minimizing the risk of leaks, cracks, or structural failures over time. The tank s **smooth, rounded contours** not only enhance aerodynamics for easier transport but also reduce stress points, contributing to its overall resilience.

This fuel tank is specifically tailored for **fleet vehicles, construction equipment, marine applications, and off-road machinery**, where reliability and fuel efficiency are critical. Its **modular and scalable design** allows for easy integration into existing systems, making it a versatile choice for both new installations and retrofits. The tank s **tight-sealing lid and secure gasket system** ensures minimal evaporation and contamination, preserving fuel quality while reducing operational costs. Additionally, the **reinforced top and bottom flanges** provide a sturdy mounting interface, accommodating various attachment options for secure installation.

For enhanced safety and compliance, the **RDS 70387 Fuel Tank** incorporates **ventilation systems and overflow protection**, preventing pressure buildup and spillage during fueling or temperature fluctuations. Its **low-maintenance construction** eliminates the need for frequent inspections or replacements, making it a cost-effective solution for businesses seeking long-term performance. Whether used in **agricultural tractors, generators, or heavy-duty trucks**, this tank delivers consistent fuel delivery and operational reliability, ensuring peak performance in the most demanding environments. Built to withstand extreme temperatures, UV exposure, and mechanical stress, it stands as a dependable asset for industries where fuel integrity and durability are non-negotiable.

**Pros and Cons of buying a RDS 70387 Fuel Tank**

The RDS 70387 is a fuel tank commonly used in agricultural, industrial, and off-road applications, particularly for diesel engines. Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **Durability and Longevity**

The RDS 70387 is constructed from high-quality materials, often featuring reinforced steel or heavy-duty plastic, making it resistant to corrosion, punctures, and environmental wear. This extends its operational life, reducing the need for frequent replacements.

2. **Compatibility with Various Engines**

This fuel tank is designed to fit a wide range of diesel engines, including those in tractors, generators, and industrial machinery. Its standardized dimensions and connection points make it easy to integrate into existing systems without extensive modifications.

3. **Fuel Efficiency and Storage Capacity**

The tank s design typically allows for efficient fuel flow, minimizing residue buildup and ensuring consistent fuel delivery to the engine. Its capacity (often around 70-80 liters, depending on model variations) provides a practical balance for medium-duty applications, reducing the frequency of refueling.

4. **Easy Installation and Maintenance**

Many versions of this tank come with pre-drilled holes for fuel lines, vents, and drain plugs, simplifying installation. Additionally, its modular design allows for straightforward access during cleaning or repairs, reducing downtime.

5. **Cost-Effective for Bulk Use**

While the upfront cost may be moderate, the tank s durability and efficiency can lead to long-term savings by reducing fuel waste and minimizing the need for replacements. It is also often more affordable than custom-built or high-end alternatives.

6. **Weather and Impact Resistance**

Depending on the material (e.g., steel with protective coatings or reinforced plastic), the tank can withstand harsh conditions, including exposure to sunlight, moisture, and minor impacts, which is crucial for outdoor or mobile applications.

7. **Availability of Spare Parts and Support**

As a widely used model, the RDS 70387 benefits from a robust supply chain for spare parts, gaskets, and accessories. Dealers and manufacturers often provide technical support, warranties, or replacement services, ensuring reliability over time.

---

### **Cons**

1. **Limited Customization**

The tank s standardized design may not accommodate unique fuel system requirements or non-standard engine configurations. Users with specialized needs might require additional modifications or adapters, adding complexity and cost.

2. **Potential for Leaks or Corrosion Over Time**

While durable, steel tanks are susceptible to rust if not properly maintained or coated. Plastic tanks, while resistant to corrosion, may degrade under prolonged UV exposure or chemical contact. Regular inspections are necessary to prevent leaks or failures.

3. **Weight and Space Constraints**

Steel versions of the RDS 70387 can be heavy, which may pose challenges for mobile applications or vehicles with weight restrictions. Additionally, the tank s size might not suit compact or space-limited setups, requiring creative installation solutions.

4. **Ventilation and Pressure Issues**

Poor ventilation or clogged vents can lead to pressure buildup inside the tank, causing fuel sloshing, vapor lock, or even tank damage. Users must ensure proper venting to avoid operational disruptions.

5. **Compatibility with Certain Fuels**

While designed for diesel, some versions may not be fully compatible with biodiesel blends or alternative fuels without additional filters or treatments. This could lead to clogging or degradation of tank materials over time.

6. **Potential for Counterfeit or Low-Quality Replicas**

Due to its popularity, the market may include counterfeit or substandard replicas that fail to meet performance or safety standards. Purchasing from authorized dealers or reputable suppliers is critical to avoid quality issues.

7. **Environmental and Safety Concerns**

Fuel tanks, especially those handling diesel, pose fire and environmental risks if not handled properly. Spills or improper disposal can contaminate soil or water. Users must adhere to safety protocols and local regulations for storage and disposal.

---

### **Conclusion**

The RDS 70387 fuel tank is a practical and reliable choice for applications requiring a durable, mid-sized diesel fuel storage solution. Its strengths lie in its compatibility, ease of maintenance, and cost-effectiveness for bulk use, making it ideal for agricultural, industrial, or off-road settings where reliability is paramount. However, its limitations such as limited customization, potential corrosion risks, and weight considerations must be carefully evaluated based on the specific use case.

For users with standard fuel needs and access to proper maintenance, this tank offers a balanced investment. Those with specialized requirements or operating in extreme conditions may need to supplement it with additional protective measures or alternative solutions.

---

### **Recommendation**

**Buy the RDS 70387 if:**

- You need a durable, mid-sized diesel fuel tank for general-purpose use (e.g., tractors, generators, or light industrial machinery).

- Your application does not require highly customized or oversized fuel storage.

- You can ensure proper installation, ventilation, and regular inspections to prevent corrosion or leaks.

- You purchase from an authorized dealer to avoid counterfeit products.

**Consider alternatives if:**

- Your engine or setup requires non-standard fuel system modifications.

- You operate in extremely harsh environments (e.g., high UV exposure, corrosive chemicals) where a more specialized tank (e.g., fully coated steel or high-grade plastic) is needed.

- Weight or space constraints are critical, and a lighter or more compact tank would be preferable.

- You frequently use alternative fuels (e.g., biodiesel blends), which may require additional filtration or tank materials.

**Final Suggestion:**

Pair the purchase with a comprehensive maintenance plan, including regular cleaning, corrosion checks, and proper fuel filtration. If possible, opt for a model with additional protective coatings or certifications for enhanced longevity. Always verify compatibility with your specific engine and fuel type before installation.

Details:

A long road ahead and no sign of a fuel station in sight. With the use of an RDS diesel install kit you can easily connect it to your vehicles fuel tank. Proudly made in the USA. Material: Aluminum.

Notes: Transfer pump is not included. Save yourself the trouble of riding on empty, get an auxiliary fuel tank by RDS. Universal Rectangular Auxiliary Fuel Tank by RDS. Finish: Bright.

This high-quality aluminum tank is designed specifically for transferring diesel fuel from the bed of a pickup truck to your factory. Diesel install kits are sold separately. Specifications: Product Name: Tank. Tank Capacity: 40 Gallon.

Increase driving range with an auxiliary fuel tank made of high-quality durable aluminum. Liquid / Fuel Type. Color: Silver. Tank Type: Rectangular Tanks.

Meets standards. Tank Dimensions: length : 60 ; width : 20.5: height : 9.

part #: 70387 prices

  • $841.85-$1046.03

specifications otruckbedaccessories:

  • brand: Rds
  • mpn: 70387
  • product type: Bed Accessories
  • upc: 699300703874
  • fitment type: Semi-universal
  • product subtype: Fuel Transfer Tanks
  • tank capacity: 48 Gallon
  • type: Rectangular Tanks
  • material: Aluminum
  • color: Silver
  • weight capacity: 1-50 Gallons

offer otruckbedaccessories:

  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • started: May 21, 2026
  • quantity: 5

general otruckbedaccessories:

  • Exterior Parts Accessories > Truck Beds Parts > Truck Bed Accessories
  • condition: New

returns otruckbedaccessories:

  • paid by: Buyer
  • time: 30 Days
  • policy: Returns Accepted

payments otruckbedaccessories:

  • credit card: Diners-club
  • other
  • wallet: Paypal

shipping otruckbedaccessories:

  • cost: $155.00
  • class: Freight
  • service: Flat Rate Freight
  • type: Fixed

seller otruckbedaccessories:

  • rating: 99.1%
  • city: Pittston, Pennsylvania
  • # reviews: 372775
product type: bed accessories, fitment type: semi-universal, product subtype: fuel transfer tanks, tank capacity: 48 gallon, type: rectangular tanks, weight capacity: 1-50 gallons,
category: auto parts > exterior parts accessories > truck beds parts > truck bed accessories, color: silver, material: aluminum, sku: 22491736925359603,
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5 offers $841.85–$1046.03 USD
  • New. Offer #1 priced at $841.85 + $0.00 shipping estimate = $841.85* total. . This RDS 48 gallons diesel notched rectangle Auxiliary Fuel Tank is made of aluminum.FREE SHIPPING
  • New. Offer #2 priced at $1046.03 + $0.00 shipping estimate = $1046.03* total. Let us help you too! Part Number: .FREE SHIPPING
  • New. Offer #3 priced at $1046.03 + $0.00 shipping estimate = $1046.03* total. FREE SHIPPING
  • New. Offer #4 priced at $905.28 + $230.00 shipping estimate = $1135.28* total. Diesel fuel can "gravity feed" from the bottom of your RDS auxiliary tank. Manufacturer Part Number: .+$230.00 shipping
  • New. Offer #5 priced at $1053.79 + $0.00 shipping estimate = $1053.79* total. 2005 GMC Sierra 3500. 2009 GMC Sierra 3500 HD.FREE SHIPPING

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