Brass Male Connector - 3/4in SAE 45 Degree Flare x M27x2 Air Line Fitting - Replaces Freightliner 23-12531-227 Parker 48F-12-MI27 177.84812M27

When an air line has to leave a metric port and land on a standard SAE flare, this Brass Male Connector distributed by FleetPro Parts & Tires is the piece that makes the joint. It is a DOT brass air fitting that joins a 3/4in SAE 45 degree flare to an M27x2 male port, so a large-bore air line ties into a metric fitting without a stack of adapters. A cracked, cross-threaded or corroded connector at that joint bleeds air the whole time the engine runs, drags the compressor into constant duty cycles, and eventually drops system pressure far enough to park the truck on the shoulder. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.

One Clean Joint: The 3/4in SAE to M27x2 Connector Advantage

This is a brass SAE flare-to-metric connector - a single machined body doing what a nipple, a bushing and a second seal would otherwise be asked to do. The SAE 45 degree flare end seals on the cone of the flared tube rather than on thread sealant, which is why it survives the heat cycling and vibration of a chassis air system without weeping. The M27x2 male end threads straight into the metric port used on Freightliner air and air-system plumbing, so nothing has to be adapted twice.

Brass keeps the joint serviceable years later - it takes road salt and heat cycling without swelling the threads, so the connector still comes back out when the line has to come off. Fewer joints also mean fewer leak paths, and one correct connector beats three adapters stacked to reach the same thread. This Automann fitting is a direct replacement for highly searched industry numbers including Freightliner 23-12531-227 and Parker 48F-12-MI27.

Vehicle Fitment & Compatibility

This brass air fitting is intended for the following commercial applications:

• Make/Model: Freightliner and Universal - Class 8 tractors and trailers
• System: Air brake and air system plumbing on tractors and trailers
• Connections: 3/4in SAE 45 degree flare x M27x2 male
• Component Group: Air Brake & Wheel / Air System Manifolds & Valves

Direct Replacement & Cross-Reference Numbers:

This Automann brass connector serves as a direct replacement for the following part numbers:

• Freightliner Interchange: 23-12531-227, 2312531227
• Parker Interchange: 48F-12-MI27, 48F12MI27
• Automann Distributor #: 177.84812M27

Technical Specifications

• Component Type: SAE flare-to-metric male connector
• Connections: 3/4in SAE 45 degree flare x M27x2 male
• Material: Brass
• Application: Freightliner, Universal
• UPC: 889626721724
• Product Level: Fleet Standard Aftermarket
• Brand: Automann (Distributed by FleetPro Parts & Tires)