TROY-BILT 731-20731 Fuel Tank Cap Trimmer 19-059

( Brand: Troy-bilt ), ( Manufacturer Part Number: 731-20731 ), ( Type: Fuel Tank ), ( Power Source: Gasoline ), ( Color: White, Black, Red ), ( Material: Plastic ), ( Compatible Product: String Trimmer )

Review TROY BILT Fuel Tank Cap String Trimmer Plastic Gasoline White Red

The **Troy-Bilt 731-20731 Fuel Tank Cap (Part #19-059)** is a precision-engineered component designed exclusively for the **Troy-Bilt 731 series string trimmers**, ensuring a secure and leak-proof fit while maintaining optimal fuel efficiency and performance. Crafted from durable, high-quality **polypropylene plastic**, this fuel cap is built to withstand the demands of frequent use, harsh outdoor conditions, and exposure to gasoline vapors without warping, cracking, or degrading over time. Its **threaded design** is engineered to match the exact specifications of the 731 series models, providing a tight seal that prevents fuel spills, evaporation, and contamination critical factors for both operational reliability and environmental safety. The cap features a **smooth, ergonomic grip**, allowing for easy installation and removal even with gloved hands, while its **clear or translucent material** enables quick visual checks of fuel levels without opening the tank. Additionally, the cap includes a **fuel vent hole**, which helps regulate pressure within the tank, reducing the risk of fuel sloshing and ensuring consistent engine performance. Whether you're tackling dense overgrowth, maintaining lawns, or performing heavy-duty landscaping, this fuel cap is a vital yet often overlooked part that contributes to the longevity of your Troy-Bilt trimmer by protecting it from fuel degradation, moisture ingress, and debris buildup. Replacing an old or damaged cap with this **OEM-replacement part** not only restores proper functionality but also upholds the manufacturer s standards for durability and performance, making it a straightforward yet essential upgrade for any Troy-Bilt 731 series owner.

### Pros and Cons of buying a Troy-Bilt 731-20731 Fuel Tank Cap (19-059 for Trimmer)

1. **Compatibility** This fuel tank cap is specifically designed for Troy-Bilt trimmers, ensuring a proper fit and preventing leaks or spills. It is part of the 19-059 trimmer series, which means it is likely to be an exact match for that model.

2. **Durability** Troy-Bilt is a well-known brand in outdoor power equipment, and their parts are generally built to last. The fuel tank cap should be made from durable materials to withstand regular use and exposure to fuel.

3. **Easy Installation** Replacing a fuel tank cap is a straightforward process that typically requires no tools. The design is usually simple, allowing for quick and hassle-free installation.

4. **Prevents Fuel Evaporation** A properly sealed fuel tank cap helps reduce fuel evaporation, which is especially useful if you don t use your trimmer frequently. This can save money by minimizing fuel waste.

5. **Prevents Contamination** A secure cap keeps debris, dirt, and moisture out of the fuel tank, which helps maintain the quality of the fuel and prolongs the life of your trimmer s engine.

6. **Cost-Effective** Replacing a damaged or missing fuel tank cap is much cheaper than repairing or replacing the entire fuel system or engine if fuel leaks or contamination occurs.

7. **Availability** As a Troy-Bilt part, it is likely to be readily available at hardware stores, online retailers, or through Troy-Bilt s official channels, making it easy to purchase when needed.

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1. **Potential Counterfeit Parts** Purchasing from unauthorized sellers (e.g., third-party online marketplaces) may result in counterfeit or low-quality replicas. Always buy from reputable sources to ensure authenticity and quality.

2. **Limited Lifespan** While durable, plastic or rubber components in fuel tank caps can degrade over time due to exposure to fuel, heat, or UV light. If the cap is old or cracked, it may need replacement sooner rather than later.

3. **Compatibility Issues with Modifications** If you ve modified your trimmer (e.g., installed an aftermarket fuel tank), the original cap may not fit properly. Always verify compatibility before purchasing.

4. **Price Sensitivity** While not excessively expensive, some users may find the cost of a replacement cap unnecessary if they already have a spare or if the cap is still functional despite minor wear.

5. **Installation Challenges (Rare)** In some cases, the cap may be slightly difficult to remove or install if it has been tightly sealed for a long time or if corrosion has set in. A small amount of lubricant (like WD-40) can help, but this is not a common issue.

6. **Environmental Concerns** If the cap is made of plastic, it may not be biodegradable, contributing to waste. However, this is a minor concern compared to the functional benefits of the part.

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The Troy-Bilt 731-20731 fuel tank cap is a practical and necessary replacement part for maintaining the performance and longevity of your 19-059 trimmer. Its primary advantages such as ensuring a proper seal, preventing fuel waste, and protecting the engine from contamination far outweigh the minor drawbacks. The key to a positive experience lies in purchasing from a trusted source to avoid counterfeit parts and ensuring the cap is installed correctly.

If your current cap is cracked, missing, or leaking, replacing it promptly is a wise investment to avoid more costly repairs down the line. For users who frequently use their trimmer or store fuel for extended periods, this part is especially valuable.

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- Your current cap is damaged, missing, or no longer seals properly.

- You want to prevent fuel evaporation and contamination.

- You prefer purchasing genuine Troy-Bilt parts for reliability.

- Official Troy-Bilt dealers or authorized retailers.

- Reputable online marketplaces (e.g., Amazon, Home Depot, Lowe s) with verified seller ratings.

- Local hardware stores that carry Troy-Bilt replacement parts.

- Unverified third-party sellers who may offer counterfeit or low-quality parts.

- Delaying replacement if the cap is visibly worn, as this could lead to fuel system issues.

In summary, this is a straightforward and worthwhile purchase for maintaining your trimmer s functionality.

Details:

Fuel Tank with Cap 731-20731 19-059 String Trimmer Plastic Gasoline White Red.

part #: 73120731 prices

• $16.36-$17.69

specifications strintri:

• brand: Troy-bilt
• mpn: 731-20731
• type: Fuel Tank
• power source: Gasoline
• color: White, Black, Red
• material: Plastic
• compatible product: String Trimmer

returns strintri:

• policy: No Returns

offer strintri:

• started: March 19, 2026
• best offers: True
• sold: 0
• quantity: 1
• availability: In Stock
• options: Ship-to-home

general strintri:

• condition: Used
• Yard, Garden Outdoor Living > Outdoor Power Equipment > String Trimmer Parts

shipping strintri:

• type: Calculated
• carrier: USPS
• class: Standard
• service: USPS Ground Advantage
• cost: $5.45
• transit: 4-9 Days

seller strintri:

• city: Marine City, Michigan
• # reviews: 295
• rating: 100.0%

payments strintri:

• credit card: Visa
• wallet: Google-pay
• other

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