Choosing the right hydraulic tank for a semi involves balancing capacity, durability, and mounting practicality. This guide highlights top-rated tanks designed for semi trucks, including aluminum and steel options with baffling for stable hydraulic flow. Each pick is evaluated for mounting ease, heat management, and resistance to corrosion, helping fleet operators and DIY enthusiasts select reliable reservoirs for demanding tasks.
Summary of Selected Products
| Product | Capacity | Material | Key Benefit |
|---|---|---|---|
| Buyers Products SMC35AR Aluminum Hydraulic Reservoir | 35 Gallon | Aluminum | Lightweight, corrosion resistant, dual rear ports |
| Buyers Products UR50A 50 Gallon Upright Reservoir | 50 Gallon | Aluminum | Upright design with baffles and sight gauge |
| Buyers Products SMC50AR Aluminum Hydraulic Reservoir | 50 Gallon | Aluminum | Dual rear ports, internally baffled |
| Buyers Products SMR15S 15 Gallon Side Mount Reservoir | 15 Gallon | Steel | Side mount, internal baffling, chrome filler |
| Buyers Products SMC70AR Aluminum Hydraulic Reservoir | 70 Gallon | Aluminum | Large capacity, corrosion resistant, dual rear ports |
Buyers Products SMC35AR Aluminum Hydraulic Reservoir

The SMC35AR is a 35-gallon aluminum hydraulic reservoir designed for heavy-duty semi applications. Its lightweight aluminum construction offers excellent corrosion resistance and a seamless look that integrates with most trucks. Dual rear 2″ NPT suction/return ports provide clean routing and flexible plumbing options. Internally baffled design reduces fluid sloshing, promoting steadier hydraulic pressure during operation.
Key features include corrosion-resistant aluminum, dual rear NPT ports for neat installations, and internal baffling to minimize turbulence. The unit ships with mounting brackets suitable for frame installation, supporting straightforward integration into most semi configurations.
Buyers Products UR50A 50 Gallon Upright Aluminum Reservoir

The UR50A offers a 50-gallon upright aluminum hydraulic reservoir designed for space-conscious installs behind the cab. Its lightweight aluminum body helps reduce overall vehicle weight while facilitating effective heat dissipation, which is crucial for sustaining hydraulic performance on long hauls. The tank is fully baffled to reduce turbulence and improve oil cooling, helping maintain consistent pressure under heavy loads. A sight gauge allows quick fluid level checks, and integrated mounting provisions simplify installation on compatible trucks.
With a focus on heat management and compact footprint, the UR50A is well-suited for operators prioritizing space savings without compromising hydraulic capacity. The baffled interior and efficient design work together to keep hydraulic fluid stable during operation in demanding environments.
Buyers Products SMC50AR Aluminum Hydraulic Reservoir

The SMC50AR is a 50-gallon aluminum reservoir with a dual rear 2″ NPT port configuration for convenient suction and return routing. Its lightweight aluminum construction provides excellent corrosion resistance and an appearance that complements most trucks. Internally baffled design minimizes sloshing, supporting consistent hydraulic pressure and smoother operation under heavy use. Brackets are included for mount installation, simplifying integration onto standard semi frames.
Highlighted benefits include reduced weight for fuel efficiency, robust corrosion resistance, and internal baffling to stabilize flow. The dual rear ports offer flexible piping while keeping lines tidy and protected from debris and vibration during travel.
Buyers Products SMR15S 15 Gallon Side Mount Reservoir

The SMR15S is a 15-gallon steel side-mount hydraulic reservoir designed for frame-mounted installations. It features a black powder-coated HRPO steel body for enhanced durability and corrosion resistance. The unit includes internal baffling to reduce sloshing and a chrome filler/breather for quick fluid checks and maintenance. The integrated rear mounting brackets support straightforward frame attachment, making it a practical choice for older or more compact semi configurations where space is at a premium.
Key considerations include the balance of smaller capacity versus install flexibility, sturdy steel construction, and the comprehensive baffling that supports consistent hydraulic performance in demanding work environments.
Buyers Products SMC70AR Aluminum Hydraulic Reservoir

The SMC70AR extends capacity to 70 gallons while preserving the lightweight aluminum construction and corrosion resistance expected from Buyers Products. Dual rear 2″ NPT return ports support clean routing and flexible plumbing, essential for larger semi systems with multi-acting hydraulic circuits. Internally baffled design minimizes sloshing, helping maintain stable hydraulic pressure during heavy-duty operation. The included mounting brackets simplify securing the reservoir to the truck frame, ensuring reliable long-term performance.
Choosing a reservoir of this size is ideal for fleets running extensive hydraulic tools, dump, or tip configurations where fluid storage and cooling are critical. The combination of high capacity, durable construction, and effective baffling makes the SMC70AR a strong option for demanding applications.
Buying Guide: Key Purchase Considerations For Hydraulic Tanks
- Capacity needs: Assess required fluid volume based on pump size, duty cycle, and anticipated drawdown to minimize refills on long trips.
- Material choice: Aluminum tanks are lightweight and corrosion resistant, suited for modern fleets; steel tanks offer rugged durability and cost efficiency for certain environments.
- Mounting and space: Consider truck layout and cab-to-bed space. Upright designs save under-cab space, while side-mounted or frame-mounted tanks offer varied installation options.
- Internal baffling: Baffles reduce fluid sloshing, stabilizing hydraulic pressure and improving control during dynamic loading and braking.
- Ports and fittings: Dual rear 2″ NPT ports enable cleaner routing in both suction and return lines. Ensure compatibility with existing hoses and quick-connects.
- Heat management: Larger or baffled reservoirs often improve oil cooling by promoting smoother flow and reducing turbulence, which supports system longevity.
- Maintenance features: Look for sight gauges, breather caps, and cleanable elements like strainers to simplify routine servicing and monitoring.
- Weight considerations: Aluminum tanks reduce overall weight, potentially improving fuel efficiency, especially on heavy loads or long hauls.
- Warranty and support: Confirm manufacturer warranty coverage and availability of mounting hardware, gaskets, and replacement parts.
- Compatibility: Match tank type to your hydraulic system’s pressure, return routing, and pump intake requirements to avoid compatibility issues.
Overall, the selection above provides a range of capacities and configurations suitable for semi trucks, balancing weight, durability, and installation practicality. Operators should align product choice with their hydraulic system’s demands and vehicle specifications to optimize performance and reliability.