3/8 in Brass DOT Air Fittings with 100 ft 3/8 in DOT Air Line Kit

In this review of the 3/8 in DOT air fittings kit the bottom line is simple: it is built for users who need a complete, DOT-compliant air line repair or installation kit without hunting for parts. The package combines 100 ft of black 3/8 in PA12 DOT air hose with a broad assortment of CA360 brass DOT fittings and installation tools, so a mechanic, truck owner or shop can fix leaks and add connections in a single visit. The most compelling reason to buy is the combination of certified materials and the wide selection of union, elbow and tee fittings included.

Key Features

• Complete kit: Includes 100 ft of black 3/8 in DOT air hose plus tees, unions, elbows, bushings and a tube cutter so a single purchase covers most repair needs.
• DOT compliant brass fittings: CA360 brass fittings meet FMVSS 571.106 and SAE J1131 requirements, offering corrosion resistance and long service life for air brake related use.
• PA12 DOT air hose: The Polyamide 12 tubing meets FMVSS 571.106 and SAE J844 standards, providing high pressure resistance and durability for vehicle and industrial use.
• Wide temperature and pressure range: Rated for operation from vacuum to 800 PSI and temperatures from -40F to +248F, useful in harsh climates and heavy-duty environments.
• High-strength construction: Reinforced pneumatic tubing has good impact and wear resistance while remaining flexible enough for routing on trucks or equipment.

Who It's For

This kit is aimed at semi truck and trailer owners, RV or tow operators, and small industrial shops that need a DOT-approved air line solution for brake components, suspension or accessory air systems. It is especially useful for anyone who prefers to carry a comprehensive repair kit that includes a cutter and Teflon tape so jobs can be finished on site.

Those who should look elsewhere include installers who require metric fittings or non-DOT specialty connectors, and users who only need a single replacement fitting rather than a full 100 ft hose and multipiece kit. For simple household pneumatic tool hookups, a smaller non-DOT tubing set may be more economical.

Pros & Cons

Pros

• Comprehensive parts selection reduces the need to source extra fittings during a repair.
• DOT-certified materials for both brass fittings and PA12 hose provide confidence for brake and suspension use.
• Durable construction and wide operating temperature range suit heavy-duty applications.

Cons

• Kit contains a very large length of hose which may be more than needed for small jobs and adds bulk to storage.

Specifications

Our Verdict

The 3/8 in DOT air fittings and 100 ft DOT air line kit is a practical, value-oriented choice for truck owners and workshops that need DOT-approved tubing and a broad selection of brass fittings in one box. Its certified materials and durable PA12 hose make it a smart buy for repairs and installations where safety and longevity matter, though those who only need a small replacement section may find the full-length hose excessive.

Frequently Asked Questions

Are the fittings DOT approved?
Yes, the brass CA360 fittings meet FMVSS 571.106 and SAE J1131 related requirements.

What material is the air hose?
The hose is made of Polyamide 12 (PA12) and complies with DOT FMVSS 571.106 and SAE J844 specifications.

Can this kit handle cold weather?
Yes, the kit is rated for temperatures down to -40F and is suitable for low temperature operation.