Genuine Porsche AC Service Valve Cap 94457366301

Genuine Porsche AC Line Protective Cap 94457366301 - Service Port Cap

A missing AC cap is an open door for trouble. The genuine Porsche 94457366301 is the OE protective cap for the air-conditioning system's service port and line connections — the small factory cap sealing the high-side port against moisture, dust, and debris. Without it, contamination creeps into the refrigerant circuit and a routine re-gas turns into a leak hunt. Correct thread, correct seal, correct polymer. Supplied new in the UAE.

What This AC Cap Does

Every Porsche AC system has service ports — the high-side and low-side connections used to evacuate, charge, and diagnose the circuit. The 94457366301 cap screws over the high-side port to keep its sealing surfaces clean and dry between services. The cap carries its own seal — a secondary barrier against slight Schrader weeps and, more importantly, moisture ingress. Water in the circuit forms acids that attack the compressor and expansion valve from the inside — the slow death of an AC system. It also shields the valve core from road grit and grime, so the next service starts with clean threads instead of a corroded mess.

What Happens When the Cap Is Missing

AC caps go missing routinely — knocked off during other work, cracked with age, or left off after a re-gas. An exposed service port collects dust and moisture from the first drive. The valve core corrodes, and what should be a clean seal becomes a slow leak path; owners notice the AC gradually losing its chill, needing re-gassing every season instead of holding charge for years. Corroded ports complicate the next service too: gauges will not seat properly, and a seized valve core can snap during removal. In the Gulf, where the AC runs hard most of the year, a sealed port is the cheapest insurance in the entire system. If your 911, Boxster, or Cayman is due a re-gas, check the caps first.

Why the Genuine Cap Matters

A cap is a cap — until it is not. The genuine 94457366301 is moulded to the exact port dimensions, so it threads on smoothly and its internal seal compresses evenly to the specified contact. Universal caps in the wrong thread pitch cross-thread the port; caps in the wrong polymer go brittle in engine-bay heat and crumble within a year. The OE polymer is specified for sustained under-bonnet temperatures and refrigerant oil contact, staying intact and removable service after service. The seal compound must stay pliable enough to seal, yet not bond to the port over years of heat cycling. For a part that costs less than the refrigerant it protects, the genuine cap is the only version that does the job properly.

Fitting Notes for Workshops

Fitting the cap takes seconds, but do it right. Before fitting, clean grit from the port threads and check the Schrader valve core — replace it if corroded, since a new cap cannot seal a damaged valve. Thread the cap on by hand until finger-tight, then snug gently — over-tightening cracks the cap or strips the port threads. If the system is being serviced, fit the new cap immediately after the gauges come off — ports left open "just for now" are how caps get lost. During any AC diagnosis, check cap condition routinely: a missing or cracked cap flags possible moisture contamination.

Specifications

Genuine vs Aftermarket AC Caps

Verification note: part identity (Porsche AC system protective cap for the service-port/line circuit, not an interior trim part) and vehicle applications confirmed against Porsche parts diagrams (rosepassion.com) and independent Porsche parts listings (wolfautoparts.com, eurospares.com), accessed October 2026. Weight 0.004 kg per catalogue data. Always confirm your exact application against your VIN before ordering.

Why Choose European Auto Spares

The Correct Cap for the AC Service Port

We supply the genuine Porsche cap specified for the AC service-port circuit — exact thread, exact seal, exact polymer. It protects the port it was designed for.

Seals Out Moisture and Debris

Moisture in the refrigerant circuit creates acids that destroy compressors from the inside. This cap's seal keeps the port dry — the cheapest compressor insurance you will ever buy.

Genuine Fit, No Universal Guesswork

No cross-threading, no cracked plastic in the threads. The OE cap threads on cleanly and comes off cleanly, every time.

VIN-Verified Fitment Before You Buy

Send us your VIN and we will confirm the 94457366301 is the correct cap for your Porsche's AC circuit before you order.

Fast Delivery Across the UAE

We dispatch quickly across the Emirates, so the cap is on the port — not on a slow boat — before contamination gets its chance.

Not sure it fits? Send us your complete VIN and our specialists will verify the 94457366301 suits your Porsche's air-conditioning system. A two-minute check for a part that protects the whole circuit.

Complete the job: this cap belongs in our Porsche Air Conditioning & Heating Parts range. For other marques, our Bentley Air Conditioning & Heating Parts cover the same maintenance essentials. Browse the full Porsche Spare Parts catalogue.

Refrigerant is expensive; compressors are more expensive; this cap is neither. Order the genuine Porsche 94457366301 from European Auto Spares today, confirm fitment with your VIN, and keep your AC circuit sealed as the factory intended.