Best 1 3/4 Inch ID Hoses for RVs and Automotive Use
Direct answer: These 1.75″ inner diameter hoses are ideal for RV venting, radiator and intake piping, and fuel filler connections. The top picks below are selected for strength, heat resistance, and compatibility with common 1.75″ systems. Best for: RV owners needing vent or intake hoses, automotive enthusiasts replacing fuel filler hoses, and DIY installers seeking durable silicone or reinforced nitrile options.
Summary of chosen products:
| Product | Brand | Use Case | Key Feature |
|---|---|---|---|
| A.A Black Plastic Flex Battery Vent Hose Tubing 1-3/4″ ID | A.A | RV/battery venting | UV resistant, heavy duty |
| ID 1 3/4 inch Straight Silicone Hose 8″ (4-Ply) | LYHARNYX | Intake/tiping, turbo piping | 4-ply reinforced, high temp resistance |
| ID 1 3/4 inch Straight Silicone Coupler 12″ (4-Ply) | LYHARNYX | Radiator/industrial piping | Universal 1.75″ ID, customizable length |
| Gasoline Fuel Filler Neck Hose 1.75″ ID (15 7/8″) | TKKEUEP | Fuel filler connections | Reinforced nitrile, temperature range |
| 1.75″ Silicone Hose 8″ (4-Ply) with Clamps | YUNLIANDA | Air intake / piping | High temp range, stainless clamps |
A.A Black Plastic Vent Hose 1-3/4″ ID
The A.A vent hose is designed for battery box ventilation in RVs, campers, and trailers. It uses UV resistant plastic and heavy-duty construction. Best for: RV owners needing a robust vent path that resists sun exposure. Limitation: Intended for venting; may not fit all non-standard battery boxes without adapters.
ID 1 3/4″ Straight Silicone Hose 8″
LYHARNYX’s 8-inch straight silicone hose is a 4-ply reinforced option with 1.75″ ID, designed for intake, turbo, or intercooler piping. Best for: users needing a short, flexible, high-temperature connector. Caution: Trim length carefully to avoid overhang or gaps in custom installations.
ID 1 3/4″ Straight Silicone Coupler 12″
This 12-inch coupler from LYHARNYX provides a universal 1.75″ ID with a 4-ply reinforced silicone design for high-pressure and high-temperature environments. Best for: longer runs requiring a customizable length. Limitation: Needs precise trimming to fit non-standard spaces.
Gasoline Fuel Filler Neck Hose 1.75″ ID
TKKEUEP’s reinforced fuel filler hose uses a nitrile tube with nylon reinforcement. Best for: fuel system connections requiring resistance to oil and heat. Drawback: Verify compatibility with existing filler neck fixtures to avoid fit issues.
1.75 Inch Fuel Filler Neck Hose 15 7/8″ Long
SyoLnKeo’s 15 7/8″ 1.75″ ID nitrile rubber hose with nylon cording provides length for fuel filler neck extensions. Best for: installations that need a longer, reinforced filler hose. Limitations: Check existing tank and cap geometry to ensure straight routing.
Gas Tank Filler Hose 1.75″ ID with Clamps
Cil2Crlu2’s 15-7/8″ straight filler hose with four clamps is designed for reinforcement and compatibility with modern fuel formulations. Best for: reliable filler neck connections in automotive fuel systems. Caution: Verify EPA compliance claims with current vehicle requirements and installation standards.
Buying Guide: Key Considerations
What should you check before buying? Inner diameter accuracy (1.75″ ID is common in many systems), length, and material construction (silicone for heat resistance; nitrile with nylon for fuel and oil exposure). Consider reinforcement level (4-ply) for higher pressure or longer runs. Clamp compatibility and included hardware can save installation time.
What is the best material for different uses? Silicone hoses (LYHARNYX, YUNLIANDA) offer high temperature tolerance and flexibility, ideal for turbo, radiator, or intake piping. Nitrile hoses with nylon reinforcement (TKKEUEP, Cil2Crlu2, SyoLnKeo) provide durability for fuel and oil exposure. For venting in RVs, UV resistance and stiffness matter less than chemical compatibility and airflow.
How should you measure for a proper fit? Measure the inside diameter of the existing hose or the fitting, and verify the available space length. If you need to trim, use a straight cut and confirm there are no kinks that could impede flow.
FAQ
- What is the difference between silicone and nitrile hoses?
Silicone handles higher temperatures and remains flexible, while nitrile with nylon reinforcement excels in fuel and oil resistance. - Are 1.75″ ID hoses common for fuel fillers?
Yes, many fuel filler systems use 1.75″ ID, but always confirm your vehicle’s or tank’s exact specification. - Can these hoses be trimmed to length?
Some hoses are designed to be trimmed; follow manufacturer guidance to maintain performance and safety. - Do clamps come with the hoses?
Several listings include stainless steel clamps; verify included hardware before purchasing. - Which hose is best for RV venting?
A vent-specific hose with UV resistance and sturdy construction is preferred; non-vent hoses may not meet venting needs. - What installation precautions are important?
Ensure a precise fit, avoid sharp bends, and secure hoses with clamps to prevent slippage and leaks.