IHOTDER Vacuum Line Kit 70pc — 6x 4.92ft Silicone Hoses (1/8"–3/8") + 64 Connectors, High-Temp Flexible

IHOTDER 70PCS vacuum line kit includes six 4.92-ft silicone hoses in six inner diameters plus 64 assorted vacuum connectors for automotive, marine, and light industrial air and water routing.

This kit supplies flexible, high-temperature silicone tubing and a wide selection of fittings to replace, repair, or prototype vacuum and low-pressure fluid lines. The hoses come in six inner diameters — 1/8", 5/32", 3/16", 1/4", 5/16" and 3/8" — and each hose is approximately 4.92 feet long. The silicone material resists temperature extremes and remains flexible for neat routing in tight engine bays, boats, or workshop projects. The connectors let you join, branch, reduce, or cap lines without needing specialty tools.

What sizes and counts are included, and how do they match typical vehicle fittings?

The kit bundles six long silicone hoses and 64 connectors to cover common vacuum and low-pressure plumbing tasks. Each hose corresponds to a different inner diameter to match standard vacuum nipples and small fluid lines found on most gasoline engines and marine systems.

• Hoses: six pieces, each ~4.92 ft (1.5 m) long in IDs of 1/8", 5/32", 3/16", 1/4", 5/16", 3/8".
• Connectors: 64 assorted pieces for straight joins, T-fittings, reducers, and end caps.
• Sizes cover common appliance, automotive vacuum, and small coolant/condensate routing needs.

How durable is the silicone and where can I safely use these hoses?

IHOTDER uses black silicone with smooth inner and outer walls and an approximately 3 mm uniform wall thickness for consistent sealing and flexibility. The material tolerates a wide temperature range and resists kinking, making it suitable for many engine bay and marine exposures when used with air or water at low pressure.

• Temperature range: -40°F to 392°F (-40°C to 200°C).
• Uniform ~3 mm wall thickness for stable vacuum performance and insulation.
• Recommended for air and water routing; not intended for fuel, oil, or pressurized gas service.

Which connectors are included and how do they simplify installations?

The connector assortment lets you build straight runs, tees, reductions, and terminate lines quickly without crimping or adhesive. That flexibility makes repairs, vacuum line routing, and custom plumbing faster and cleaner—particularly useful when replacing brittle factory lines or creating new sensor/actuator connections.

• Tee connectors for splitting vacuum to multiple devices.
• Straight joiners to extend hose runs or repair cuts.
• Reducers to adapt between different inner-diameter hoses included in the pack.
• End caps to close off unused lines during troubleshooting or retrofit work.

How do I choose the right hose size and install without leaks?

Measure the outer diameter of the mating nipple and match it to the hose inner diameter for a snug push-fit. Cut hoses squarely, slide the connector in fully, and use small clamps if the application will see movement or higher-than-atmospheric pressures.

• Match hose ID to mating barb OD for secure friction fit.
• Cut cleanly with a utility knife or hose cutter to prevent gaps.
• Use spring clamps or tiny worm-drive clamps for added security where vibration is present.

Who this kit is best for: DIY mechanics, marine hobbyists, small-engine technicians, and makers who need a versatile set of silicone vacuum hoses and connectors for air and water routing. It’s ideal for replacing degraded factory vacuum lines, building custom manifolds, draining condensate, or prototyping systems where flexible, heat-resistant tubing is required. Avoid using this kit for fuel, oil, or compressed gas lines and verify compatibility with your specific application before installation.