
99FLB100-1 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $106.09 | Condition is New, ATTWOOD MARINE 99FLB100-1S ASM-FLVV DB 1.0" GRN SPK 99FLB100-1S, FREE SHIPPING | ![]() |
![]() | $106.80 | Top Pick! Condition is New, Attwood 99FLB100-1S Fill Limit Vent Valve w/ GRV Communication, 1.0" Shut-off, shipping cost = $18.95 | 99.2% |

The Attwood 99FLB100-1 Boat Fuel Tank Fill and Vent Gravity Valve is a crucial component of your marine fuel system, designed to ensure safe and efficient filling and venting of your fuel tank. This valve is engineered to meet the demands of marine applications, making it a reliable addition to your boat's fuel system.
The 99FLB100-1 is a gravity-fed valve, meaning it relies on gravity for fuel flow, making it easy to install and use. The valve features a fill limit function, allowing you to fill your fuel tank up to a specific level to prevent overfilling and potential spills. This not only helps to keep your boat and the environment clean but also reduces the risk of fire or damage to fuel lines.
The vent function of this valve is designed to allow air to enter the tank during fueling and exit when the fuel level drops. This helps to maintain a consistent fuel pressure and prevent vacuum conditions that could lead to negative fuel flow and potential engine damage.
The Attwood 99FLB100-1 Boat Fuel Tank Fill and Vent Gravity Valve is constructed from high-quality materials, including a brass body and a double O-ring seal, ensuring durability and longevity. The valve is designed to resist corrosion from marine environments and features a polished chrome finish that looks great and resists tarnishing.
The installation of this valve is straightforward, with clear instructions included in the package. Additionally, it is compatible with both aluminum and steel fuel tanks, making it a versatile option for a wide range of boats. Furthermore, it meets the guidelines set by the American Boat and Yacht Council (ABYC), ensuring that it adheres to industry standards for marine fuel systems.
In summary, the Attwood 99FLB100-1 Boat Fuel Tank Fill and Vent Gravity Valve is an essential addition to any marine fuel system, providing a reliable and easy-to-use solution for filling and venting fuel tanks. Its durable construction, simple installation, and adherence to industry standards make it a top choice for boat owners who want to ensure the safety and efficiency of their fuel system.
Pros and Cons of buying a Attwood 99FLB100-1 Boat Fuel Tank Fill Cap with Limiter and Vent
1. Pros:a. Safety: This fuel fill cap includes both a fill limiter and a vent to ensure safe and efficient fueling. The fill limiter prevents overfilling, reducing the risk of spills or potential fuel damage. The vent relieves pressure in the fuel system and prevents the possibility of vacuum conditions that can cause problems.
b. Convenience: The combination of the fill limit and vent in a single cap means fewer parts to install and maintain. This can save you time and effort compared to installing separate components.
c. Durability: Attwood is a reputable brand known for producing durable marine products, and the 99FLB100-1 is no exception. This cap is designed to withstand harsh marine environments with its corrosion-resistant materials.
d. Universal compatibility: This fuel tank cap is suitable for both diesel and gasoline applications and can be used on various boat types, making it a versatile choice for boat owners.
2. Cons:a. Cost: The Attwood 99FLB100-1 is priced higher compared to standard fill caps without limiters and vents. Many boaters might view the added features as an unnecessary expense, driving up the overall cost.
b. Installation: Some boat owners might find installing this cap to be more challenging due to the combined fill limiter and vent design. It may require more time and effort to properly secure the cap and ensure a tight seal, specifically because it serves two purposes.
c. Limited customizability: This cap design does not offer various color or finish options, which caters mostly to functional boaters, who are less concerned about cosmetic aspects.
Conclusion:The Attwood 99FLB100-1 boat fuel tank fill cap with limiter and vent comes with several advantages, including improved safety, convenience, durability, and versatility. However, the added features come with a higher cost, potential installation challenges, and limited customizability options. Ultimately, the decision to purchase this cap depends on individual priorities and preferences. If safety, convenience, and durability are a priority, despite the added cost, the Attwood 99FLB100-1 is an excellent choice. On the other hand, for boaters who prefer lower cost and easier installation, a standard fuel cap might be a more suitable option.
Recommendation:For boat owners prioritizing safety, convenience, and durability, the Attwood 99FLB100-1 boat fuel tank fill cap with limiter and vent is a reliable and highly recommended choice. Despite the higher cost and potential installation challenges, the benefits offered by this cap in terms of fuel system protection and reduced maintenance make it a worthwhile investment for prudent boaters.
Details:
Commonly used on lund boats, part number 2136758, but may be other boats. Compatible with ethanol blended fuels and plastic aluminum tanks. Sets the full level of fuel in tank. Barbed hose connections.
Sold as seen in pictures. Mounting holes. Buying more than one item. Integrated high-performance gasket included.
This fuel tank valve is black and green, includes a gasket. Color: black / green. Prevents liquid fuel from reaching the carbon canister or vent system. Part manufacturer: Attwood.
Unfortunately, this may increase your shipping costs. Specifications: boat manufacturer: lund. Measures approximately 5 1/4 DOA. Assembly guide aligns the Lvov and gasket with tank for faster installation.
During vessel operation, trailing and storage. Hardware and instruction / installation manual not included. Passes all USCG CF 33 and ABC h-24 fire test requirements carb EPA. Per manufacturer, has a shut-off height of 1.
Features: essential component of Zapotec and secure stop. All measurements are approximate. Shipping delivery does this item have a free option.
specifications inboardfuel:
- brand: Attwood
- mpn: 99flb100-1
- color: Black / Green
- country/region of manufacture: United States
- boat brand part number: 2136758
- type: Fuel Tank Valve
- boat brand: Lund Boats
seller inboardfuel:
- # reviews: 188738
- rating: 99.3%
- city: pleasant prairie, wisconsin
shipping inboardfuel:
- transit: 2-6 days
- class: standard, expedited
- service: usps ground advantage, fedex ground or fedex home delivery, usps priority mail, fedex 2day
- type: calculated
- carrier: usps, fedex
returns inboardfuel:
- time: 30 days
- paid by: buyer
- policy: returns accepted
payments inboardfuel:
- credit card: discover
- wallet: apple-pay
- other
offer inboardfuel:
- sold #: 25
- started: january 21, 2025
- options: ship-to-home
- in stock #: 2
- prices: $106.09–$106.80
- item condition: New
- availability: in stock
general inboardfuel:
- category: Boat Parts > Inboard Engines Components > Intake Fuel Systems
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