3/8ft OD x 100ft Black SAE J844 Nylon Air Brake Tubing - DOT Approved

In this review of the 3/8' OD x 100' black SAE J844 nylon air brake tubing, the bottom line is simple: it is a practical, DOT-approved replacement hose for trailer and truck air systems that balances durability and value. The review is aimed at mechanics, fleet owners, and DIYers who need a long run of reliable air line that tolerates cold starts and road exposure. The single biggest reason to buy is the combination of SAE J844 compliance and a wide operating temperature range, which makes it usable in demanding environments without needing frequent replacement.

Key Features

• Size and length: Each roll is 100 ft of nominal 3/8' O.D. tubing, providing long runs from a single piece to reduce fittings and leak points.
• Standards compliance: Meets or exceeds SAE J844 and DOT requirements, so it is suitable for air brake systems where compliance matters.
• Temperature range: Rated for use from -40 F up to 200 F, offering cold weather flexibility and reliable performance in hot under-hood conditions.
• Chemical and UV resistance: Resistant to UV, gasoline, diesel, and cleaning chemicals, which helps the tubing survive common roadside exposures.
• Pressure capability: Designed to work with compression fittings and operate up to 150 PSI in airbrake systems, meeting typical system needs.
• Pack quantity: Sold as a 2-pack of identical 100 ft rolls, giving extra material for multiple vehicles or spares.

Who It's For

This tubing is for vehicle owners, small fleet managers, and professional mechanics who need DOT-compliant air brake line that covers long runs without joints. It suits trailer owners and trucks where a durable, weather-resistant line is required and where compatibility with compression fittings matters.

It is not intended for use as a fuel line or in applications that require reinforced hydraulic hose or specialty fittings. If a more flexible hose is essential for very tight, intricate routing or for non-air applications, a different product designed specifically for those needs should be considered.

Pros & Cons

Pros

• Meets SAE J844 and DOT standards, ensuring regulatory compliance for air brake systems.
• Wide temperature range and UV/chemical resistance improve longevity in varied climates.
• Long 100 ft rolls and a 2-pack format offer good value and fewer joints on installations.
• Works with standard compression fittings and is rated for typical airbrake pressures.

Cons

• Several users report the tubing can be quite stiff, which may complicate routing in tight spaces.
• Not designed for fuel applications, so its use is limited to pneumatic systems only.

Specifications

Brand	Mytee Products
Model pack	2 pack
Size	Nominal O.D. 3/8' with 0.062' wall
Length	100 ft per roll
Standards	Meets or exceeds SAE J844 (Type A & B) and DOT
Operating temperature	-40 F to 200 F
Rated pressure	Designed to operate up to 150 PSI

Our Verdict

The 3/8' x 100' SAE J844 nylon tubing is a sensible, cost-effective choice for anyone needing DOT-compliant air brake line that stands up to cold, heat, and common roadside chemicals. It offers good value in a 2-pack and reduces fittings with long continuous lengths, though installers should be prepared to manage its firmer feel when routing tight bends.

Frequently Asked Questions

Can this tubing be used with compression fittings?
Yes, it is designed for use with compression fittings and meets DOT requirements for that use.

Is this tubing safe for fuel or oil lines?
No, it is not made for fuel; it is intended for pneumatic airbrake systems only.

What temperature range does it tolerate?
The tubing is rated from -40 F up to 200 F, suitable for cold climates and hot engine areas.