ARB NPT Air Hose Coupling 1 Pack — US Standard 1/4" NPT, Durable Single-Piece Connector

The ARB Hose Coupling US Std NPT 1PK (740112) is a robust, single-piece NPT-threaded air hose connector engineered for reliable compressed-air connections in off-road and workshop environments.

This coupling is built by ARB, a manufacturer known for high-quality, field-tested automotive accessories. Crafted to meet standardized NPT thread dimensions and endure heavy use, the 740112 coupling provides a compact way to join air lines, inflate tires, or connect shop tools. Its design focuses on durability, ease of use, and compatibility with common US-standard fittings so you can add it to existing setups without fuss.

What does the ARB hose coupling fit and connect to?

This coupling uses US standard NPT threads so it mates cleanly with most American-threaded compressors, tire inflation tools, and pneumatic accessories. The part is intended as a universal inline connector where NPT thread compatibility is required.

• Standard US NPT thread profile for broad compatibility
• Single-piece construction reduces leak points
• Works with compressed-air tools, gauges, and inflation valves
• Suitable for retrofit into existing airline assemblies

How does the coupling perform under daily or harsh use?

ARB designs components like this coupling for durability and repeated field use; materials and construction are selected to withstand workshop and off-road conditions. While exact material specs are applied by ARB’s manufacturing standards, the product is proven for reliable function through the brand’s testing procedures.

• Engineered for repeated connect/disconnect cycles
• Manufactured to meet and exceed standard testing protocols
• Compact form factor minimizes snagging and damage risk
• Corrosion-resistant finish for longer service life

How easy is it to install and maintain the ARB 740112 coupling?

Installation is straightforward for anyone familiar with threaded pneumatic fittings: wrap thread sealant or tape, hand-start the thread, then tighten to spec. Maintenance is minimal—periodic inspection and replacement of any sealing tape or damaged threads keep the connection airtight.

• Threaded NPT connection requires standard plumber’s tape or sealant
• Hand-tighten then torque to recommended spec for a leak-free seal
• Inspect threads and seal periodically; replace if worn
• Compatible with aftermarket adapters for cross-standard hookups

Will this coupling work with my current ARB air accessories?

If your ARB parts use US standard NPT threads, the 740112 will integrate directly. For equipment with other thread standards, use a matched adapter; ARB offers a range of fittings and adapters to bridge different thread types.

• Direct fit for ARB components specified as US NPT threaded
• Use adapters to connect to BSP or metric-threaded gear
• Ideal for building custom airline layouts in vehicles and garages
• Works well with ARB’s compressors, inflation tools, and gauges when specified

Who is this for: The ARB Hose Coupling US Std NPT 1PK (740112) is aimed at vehicle owners, off-roaders, fleet technicians, and workshop professionals who need a compact, dependable NPT-threaded connector for compressed-air systems. Choose this part if you require a single, rugged coupling to integrate into ARB-compatible air systems or to upgrade existing US-standard airlines in demanding environments.