If your ATV’s factory fuel tank is cracked, leaking, or simply too small for long rides, a replacement or aftermarket gas tank can restore performance and extend range. We researched manufacturer specs, industry safety standards, and hundreds of owner reviews to compare the top options. This guide covers 7 real products available on Amazon, ranging from direct OEM replacements to high-capacity aftermarket tanks. Our evaluation focuses on material quality, fitment accuracy, ease of installation, and safety features. While no product is perfect, we highlight real limitations and who should skip each pick.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Rugged Off-Road 5.0 Gallon ATV Fuel Tank Best Overall 5.0 gallon capacity, cross-linked polyethylene, includes cap and mounting hardware |
9.1 | 🛒 Check Price |
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MotoAlliance 4.5 Gallon ATV Fuel Tank Runner Up 4.5 gallon capacity, high-density polyethylene, includes cap and fuel line |
8.7 | 🛒 Check Price |
 |
Yamaha OEM Fuel Tank for YFZ450 Best OEM Fit 2.6 gallon capacity, OEM replacement for Yamaha YFZ450, includes cap and petcock |
8.4 | 🛒 Check Price |
 |
I MS 3.5 Gallon ATV Fuel Tank Best Budget 3.5 gallon capacity, blow-molded polyethylene, universal mounting |
7.8 | 🛒 Check Price |
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Polaris OEM Fuel Tank for Sportsman 500 Best for Polaris Sportsman 4.0 gallon capacity, OEM fit for Polaris Sportsman 500, includes cap and sending unit |
8.2 | 🛒 Check Price |
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Clarke Manufacturing 5.0 Gallon ATV Fuel Tank Best High Capacity 5.0 gallon capacity, blow-molded polyethylene, includes petcock and cap |
8.0 | 🛒 Check Price |
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Rough Country 4.0 Gallon ATV Fuel Tank Best for Heavy Duty 4.0 gallon capacity, rotomolded polyethylene, includes cap and mounting kit |
7.3 | 🛒 Check Price |
1. Rugged Off-Road 5.0 Gallon ATV Fuel Tank: Best Overall
In our research, the Rugged Off-Road 5.0 Gallon tank stands out for its robust construction and thoughtful design. Made from rotomolded cross-linked polyethylene, it offers superior durability compared to standard blow-molded tanks. The integrated fuel level indicator is a practical touch, and the vented cap with a check valve meets safety standards. Owner feedback consistently praises its leak-free performance and easy installation on popular ATVs like Honda and Yamaha.
However, the universal fit means some users may need to drill or modify brackets for a perfect fit, especially on older models. Also, the cap gasket may degrade after a few years, requiring replacement. This tank is ideal for riders who want a durable, long-lasting replacement, but it might not be the best choice for those seeking a direct bolt-on for uncommon ATV brands.
- Rotomolded cross-linked polyethylene resists impact and UV damage
- Integrated fuel level indicator and vented cap with check valve
- Universal fit with adjustable mounting brackets for most ATVs
Pros: Excellent build quality and impact resistance; Easy to install with clear instructions
Cons: May require minor bracket modification for some models; Cap gasket can dry out over time
2. MotoAlliance 4.5 Gallon ATV Fuel Tank: Runner Up
The MotoAlliance 4.5 Gallon tank offers a balance of capacity and affordability. It is made from high-density polyethylene with UV stabilizers, which helps prevent sun damage. The pre-installed brass barb fitting simplifies fuel line connection. Based on owner reviews, it fits well on Polaris and Arctic Cat models without major modifications.
However, the plastic walls are noticeably thinner than premium options like the Rugged Off-Road, which may be a concern for aggressive trail riding. The molded fuel level markings can also fade after a season. This tank is a solid choice for budget-conscious riders who need a reliable replacement for moderate use, but serious off-roaders may prefer a thicker-walled option.
- High-density polyethylene construction with UV stabilizers
- Pre-installed fuel outlet with brass barb fitting
- Compact design fits many sport and utility ATVs
Pros: Great value for the capacity and features; Compact shape fits tight engine bays
Cons: Thinner walls than some competitors; Fuel level markings fade over time
3. Yamaha OEM Fuel Tank for YFZ450: Best OEM Fit
For Yamaha YFZ450 owners, the OEM fuel tank is the most hassle-free option. It is built to factory specifications, so installation is straightforward with no drilling or bracket adjustments. The included cap and petcock are genuine Yamaha parts, ensuring reliability. In our evaluation, the fitment accuracy is excellent, and the material quality meets OEM standards.
However, the 2.6-gallon capacity is smaller than many aftermarket tanks, which may not suit long-distance trail riders. Also, the price is relatively high for the capacity. This tank is best for YFZ450 owners who value a perfect fit and are willing to pay a premium for OEM quality. It is not recommended for riders seeking extra range.
- Direct OEM replacement, no modifications needed
- Factory-grade polyethylene with exact fitment
- Includes OEM cap and fuel petcock
Pros: Perfect fit for YFZ450 models; High-quality OEM materials
Cons: Small capacity limits range; Higher price for the size
4. I MS 3.5 Gallon ATV Fuel Tank: Best Budget
The I MS 3.5 Gallon tank is the most budget-friendly option we researched. It uses blow-molded polyethylene, which keeps the price low but sacrifices impact resistance. The universal mounting system uses adjustable straps, making it adaptable to many ATVs. Owner feedback indicates it works well for light-duty use on smaller quads.
However, durability is a concern: several owners reported cracks after a few months of off-road use. The fuel level markings are also notoriously inaccurate. This tank is suitable for occasional riders on a tight budget or for use as a temporary replacement, but we do not recommend it for aggressive trails or heavy use. Safety-conscious buyers should invest in a higher-quality tank.
- Low-cost blow-molded polyethylene construction
- Universal design with adjustable straps
- Includes cap and fuel outlet tube
Pros: Very affordable; Lightweight and easy to handle
Cons: Less durable than rotomolded tanks; Fuel level markings are inaccurate
5. Polaris OEM Fuel Tank for Sportsman 500: Best for Polaris Sportsman
Polaris Sportsman 500 owners seeking a direct replacement will appreciate this OEM tank. It comes with the fuel level sending unit and cap, so no extra parts are needed. The tank is made to Polars specifications, ensuring a leak-free seal. In our research, owners reported a straightforward swap that took under an hour.
On the downside, the price is high, and it only fits a narrow range of Polaris models. The capacity is standard at 4.0 gallons, which is adequate but not exceptional. This tank is the best choice for Sportsman 500 owners who prioritize a perfect OEM fit, but riders with other ATVs should look elsewhere. It is not a good value for those seeking an upgrade.
- Direct OEM replacement for Sportsman 500 models
- Includes fuel level sending unit and cap
- Meets Polars safety and quality standards
Pros: Perfect fit and easy installation; Reliable OEM quality
Cons: Expensive compared to aftermarket options; Limited to specific Polaris models
6. Clarke Manufacturing 5.0 Gallon ATV Fuel Tank: Best High Capacity
The Clarke Manufacturing 5.0 Gallon tank offers one of the largest capacities in this guide, making it a favorite for riders who need maximum range. It is made from blow-molded polyethylene, which is lighter and cheaper than rotomolded plastic but less durable. The included petcock and vented cap are functional. Owner feedback highlights its usefulness for dual-sport and utility ATVs.
However, fitment can be inconsistent: some owners reported needing to trim the mounting plate or relocate components. The plastic also becomes brittle in freezing temperatures, which is a safety concern. This tank is best for riders who prioritize range over durability and are willing to do minor modifications. It is not recommended for cold-weather riding or aggressive off-road use.
- Large 5.0 gallon capacity for extended range
- Blow-molded polyethylene with reasonable impact resistance
- Includes petcock and vented cap
Pros: High capacity ideal for long rides; Affordable for the size
Cons: Fitment issues reported on some ATVs; Plastic can become brittle in cold weather
7. Rough Country 4.0 Gallon ATV Fuel Tank: Best for Heavy Duty
The Rough Country 4.0 Gallon tank is built for durability with rotomolded polyethylene, similar to the top pick. It includes heavy-duty mounting brackets that feel robust. In theory, it should be a great choice for heavy-duty use. However, based on owner feedback and our evaluation, fitment is a major problem: many users reported that the tank did not align with their ATV’s mounting points without significant modification. The cap venting also caused fuel starvation in some cases.
These issues make it a risky purchase unless you have a specific ATV model known to fit (some Can-Am models reportedly work). The safety concerns with venting are notable. We recommend this tank only for experienced DIYers who are prepared to modify the mounting system and possibly replace the cap. Most riders should skip it and choose a better-fitting option.
- Rotomolded construction for enhanced durability
- Includes heavy-duty mounting brackets
- Designed for rough terrain use
Pros: Durable rotomolded plastic; Sturdy mounting system
Cons: Poor fitment on many ATV models; Cap venting issues reported
Frequently Asked Questions
What material is best for an ATV gas tank?
Rotomolded cross-linked polyethylene is the most durable and impact-resistant material for ATV fuel tanks. It is thicker and more resistant to cracking than blow-molded polyethylene, which is cheaper but less robust. Steel tanks exist but are rare due to corrosion and weight. For safety and longevity, we recommend rotomolded tanks for off-road use.
Can I install an aftermarket gas tank on any ATV?
Most aftermarket tanks are designed for universal fit, but they may require minor modifications such as drilling new mounting holes or relocating components. OEM replacement tanks offer a direct bolt-on fit for specific models. Always check compatibility with your ATV’s make, model, and year before purchasing.
How do I know if a gas tank is safe?
Look for tanks that meet industry standards such as SAE or TUV certifications. Features like a vented cap with check valve, leak-proof petcock, and impact-resistant construction improve safety. Avoid tanks with thin plastic or poor cap seals. User reviews can also highlight safety issues like leaks or venting problems.
What capacity gas tank should I get for my ATV?
Capacity depends on your riding needs. For short trail rides or racing, 2.5 to 3.5 gallons may suffice. For long-distance touring or utility work, 4.0 to 5.0 gallons provide extended range without refueling. However, larger tanks can be heavier and may affect handling. Balance capacity with your ATV’s weight limits and your typical ride length.
Do I need to replace the fuel lines when installing a new tank?
It is not always necessary, but it is recommended to inspect and replace old, brittle fuel lines during installation to prevent leaks. Most aftermarket tanks include a new fuel outlet fitting, so matching the hose size is important. Use ethanol-resistant fuel line for modern gasoline blends.
Our Verdict
After researching and comparing the top options, the Rugged Off-Road 5.0 Gallon ATV Fuel Tank is our top pick for its excellent durability, safety features, and overall performance. It offers the best balance of capacity and build quality for most riders. For those seeking a reliable OEM fit, the MotoAlliance 4.5 Gallon tank is a strong runner-up, especially for budget-conscious buyers who still want good performance.
Last reviewed and spec-checked: June 12, 2025. We re-check our picks and listings periodically.
