IHOTDER Silicone Vacuum Line Kit 6PCS 5ft — Multi-Diameter Automotive Hoses for Vacuum, Breather & Coolant

IHOTDER 6PCS 5ft silicone vacuum line kit provides six different diameter hoses for air and water routing in automotive or workshop projects.

This set bundles six 4.92 ft (approx. 5 ft) black silicone hoses in a range of inner diameters so you can match the exact size needed for intake, vacuum, breather, or coolant bypass tubing tasks. Each hose is built with smooth inner and outer walls and a consistent wall thickness to help maintain a secure fit and steady flow in moderate- to high-temperature settings.

What sizes are included and why does that matter?

The kit contains 1/8" (3 mm), 5/32" (4 mm), 3/16" (5 mm), 1/4" (6 mm), 5/16" (8 mm), and 3/8" (10 mm) inner diameter hoses. Having multiple sizes prevents guesswork and reduces the need to cut or splice hoses when matching OEM lines or aftermarket fittings.

• Six distinct diameters for a wide variety of fittings and ports.
• Each length ≈ 4.92 ft so you have spare slack for routing.
• Uniform wall thickness ensures consistent fit and seal.

How does the silicone material perform under heat and flex?

These hoses are molded from automotive-grade silicone, designed to stay flexible across a broad temperature window. That flexibility reduces cracking and hardening over time compared with some rubbers, while the smooth bore helps maintain predictable airflow.

• Temperature tolerance from -40°F to 392°F for many engine bay uses.
• Flexible and resilient construction resists kinking during tight routing.
• Smooth inner surface improves flow and reduces buildup points.

Can I use these hoses for fuel or pressurized gases?

These tubes are intended primarily for air- and water-transfer applications such as vacuum lines, breathers, and coolant bypasses. They are not rated for continuous fuel, oil, or high-pressure gas service—confirm compatibility before using them in those systems.

• Recommended for vacuum, breather, and water lines only.
• Not suitable for carrying gasoline, diesel, or oil fuels.
• Not engineered for high-pressure pneumatic or hydraulic circuits.

How easy is installation and what tools do I need?

Installation is straightforward: remove the old hose, select the matching diameter from the kit, cut to length, and secure with a clamp or barb as needed. The hoses’ consistent wall thickness and flexibility make sliding over fittings quick and reliable.

• Cut cleanly with scissors or a hose cutter to prevent fraying.
• Use worm-drive clamps or spring clamps for secure fittings.
• Trim length to avoid excess loops and reduce heat exposure.

Who is this kit for? The IHOTDER 6PCS 5ft silicone vacuum line kit is aimed at DIY mechanics, tuners, and technicians who need a ready supply of sizes for vacuum routing, breather upgrades, emissions plumbing, or workshop prototypes. It’s useful for vehicle maintenance, small engine repairs, and custom plumbing where moderate heat resistance, flexibility, and a reliable seal are required. Avoid using these hoses for fuel or oil lines and check diameter compatibility with your fittings before final installation.