Connector, Straight Push-to-Connect (1/4" PTC x 3/8" MPT) — Freightliner 23-14392-002

Overview

This is a straight push-to-connect (PTC) to male pipe thread (MPT) air/ pneumatic connector sold under Freightliner part number 23-14392-002. One end is a 1/4" PTC (push-to-connect) for quick connection to 1/4" OD DOT/air brake tubing; the other end is a 3/8" MPT male pipe thread for threaded connections to compatible fittings or ports.

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Features

• Straight inline design for compact, low-profile connections.
• One 1/4" push-to-connect (PTC) end for fast, tool-free tubing installation.
• One 3/8" male pipe thread (MPT) end for secure threaded attachment.
• Marketed as an OEM Freightliner replacement fitting; commonly used in air/brake tubing and pneumatic service lines.

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Verified fitment

This part is documented in Freightliner parts catalogs and multiple Freightliner parts distributors as part number 23-14392-002 (Connector - Straight, 1/4 PTC x 3/8 MPT). Available public listings identify it as a Freightliner OEM part number but do not list specific vehicle model applications or build years in the publicly accessible sources reviewed. If you need confirmation for a particular truck model or serial number, please provide that vehicle information and we can check fitment against exact OEM parts catalogs.

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Specifications

• End A: 1/4" PTC (push-to-connect) for 1/4" OD tubing.
• End B: 3/8" MPT (male pipe thread).
• Configuration: Straight inline connector.
• Intended use: pneumatic/air brake tubing and general compressed-air lines where DOT/SAE PTC tubing is used.

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Package contents

• 1 × Straight push-to-connect to MPT connector (1/4" PTC x 3/8" MPT) — Freightliner P/N 23-14392-002

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Cross-reference

No distinct OEM interchange or alternate part numbers could be independently verified for this exact Freightliner part number in the sources reviewed. Some distributors list adjacent Freightliner part variants (for other thread/tube size combinations), but no confirmed third-party or superseding part numbers were found for 23-14392-002. If you have an alternate part number to check, provide it and I will verify.

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Notes

Do not assume thread sealant or tape is included — use an appropriate sealant for the MPT connection per your shop practice. If you require material, certification, or dimensional drawings (hex size, thread spec, length), provide that request and I will attempt to locate OEM documentation or dimensioned drawings if available.