Subaru OEM A/C Line O-Ring Subaru WRX 02-07 / STI 04-07 | 73039FA100

Product Fitment:

• 1998–2000 Subaru Forester

• 1997–2007 Subaru Impreza

• 2002–2007 Subaru WRX

• 2004–2007 Subaru STI

Overview

The Genuine Subaru OEM A/C Line O-Ring (Part #73039FA100) is an exact-fit factory replacement sealing ring designed for the air conditioning refrigerant lines on 2002–2007 Subaru WRX models. Engineered to OEM specifications, this O-ring ensures a leak-free seal in your A/C system, maintaining proper refrigerant charge and cooling performance. If your WRX is experiencing A/C refrigerant leaks or you're servicing the A/C lines, replacing this critical seal with the genuine Subaru part guarantees a perfect fit every time.

Key Features & Benefits

• Genuine Subaru OEM Part – Manufactured to exact factory specifications for guaranteed fit, form, and function — no guesswork, no modification required.
• Leak-Free Sealing – Precision-molded O-ring profile creates a reliable, pressure-tight seal on A/C refrigerant lines, preventing costly refrigerant loss.
• OEM-Grade Material – Constructed from heat- and chemical-resistant rubber compound compatible with R-134a refrigerant and A/C system oils.
• Exact Replacement – Direct drop-in replacement for the original factory O-ring; no trimming, adapting, or modifications needed.
• Factory Warranty Backed – Covered under Subaru's genuine parts warranty for added peace of mind.
• Prevents A/C System Damage – A failed O-ring can cause refrigerant leaks that lead to compressor damage; replacing it promptly protects the entire A/C system.

What's Included

• 1x Genuine Subaru OEM A/C Line O-Ring (Part #73039FA100)

Specifications

Installation

This O-ring is a standard A/C line service part typically replaced during A/C line disconnection, compressor service, or refrigerant leak repair. The A/C system must be properly evacuated of refrigerant before disconnecting any lines — this work should be performed by a certified A/C technician with the appropriate recovery equipment. Lightly lubricate the new O-ring with clean PAG oil before installation and torque the A/C line fitting to factory specification. After reassembly, the system must be evacuated and recharged with R-134a refrigerant.