Do the existing schrader valves need to be removed or will the valve in these fittings push down to open the old valves simultaneously?

The schrader valves needn't to be removed, and the valve in these fittings push down to open the old valves simultaneously.

The high side fitting is too big for my old port?

Same here. The 2 fittings are the same size and both fit the low pressure port. This kit does not work.

Can anyone tell me if the low side port fits a .375 inch threaded r12 port?

The high side fits perfectly but the low side is too big! Why is this not fitting? What is the resolution?

Does the valve push down the existing valve in the port when it’s screwed on? Or when r134a goes in?

R12 to R134A retro fit fittings connect to the thread for use with the valve, there is a removable schrader valves., fitted with a plastic protective cover cap

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Aupoko R12 R22 to R134A Retrofit High/Low Fitting Port Kit, 1/4" to7/16-20 | Low Side Adapter 1/4" SAE(7/16"-20UNF) x 13mm (Blue). High Side 1/4" SAE(7/16"-20UNF) x 16 mm (Red) AC Conversion Adapter

Product ID: 429991899

Details

Brand
Aupoko
Colour
Red
Connector type
Adapter Cap
Exterior finish
Stainless
Item weight
60 Grams
Material
Metal Plastic

⚡Quick-connect Schrader valve system

🔧Universal 1/4’’ to 7/16”-20 UNF retrofit

🛡️High heat resistant stainless steel build

Description

❄️ Upgrade your ride’s chill game — don’t get left in the heat!

BUILT TO ENDURE - Premium metal and plastic construction ensures durability under extreme heat and pressure.
LEAK PROOF PERFORMANCE - Professional-grade rubber seals prevent refrigerant loss, saving costs and the environment.
COMPLETE CONVERSION KIT - Includes both low/high side couplers plus protective caps for all-in-one AC retrofit.
PLUG PLAY INSTALLATION - Threaded design with removable Schrader valves for fast, tool-free setup.
SEAMLESS COMPATIBILITY UPGRADE - Effortlessly convert R12/R22 ports to R134A with precision-fit adapters.

The Aupoko R12 to R134A AC Retrofit Fitting Adapter Kit is a robust, stainless steel and plastic solution designed to convert older R12/R22 AC charging ports to modern R134A standards. Featuring universal 1/4’’ to 7/16”-20 UNF threading, removable Schrader valves, and protective caps, this kit ensures quick installation, leak-proof operation, and long-lasting durability—perfect for professional-grade automotive AC maintenance and upgrades.

Specifications

ASIN	B07SZKY6R1
Best Sellers Rank	31,060 in Automotive ( See Top 100 in Automotive ) 70 in Car Air Conditioning Tools & Equipment
Brand	Aupoko
Colour	Red
Connector Type	Adapter, Cap
Connector type	Adapter , Cap
Country of Origin	China
Customer Reviews	4.1 out of 5 stars 736 Reviews
Exterior Finish	Stainless Steel
Item Weight	60 Grams
Manufacturer	Aupoko
Material	Metal, Plastic
Model Number	Aupoko
Number of Pieces	4
Part Number	R12 to R134a Fitting Retrofit
Set Name	4
Size	0.25 tum
Thread Size	1/4'' (7/16''-20 UNF)
Thread Type	UNF
Thread size	1/4'' (7/16''-20 UNF)
UPC	606034661257
Unit Count	1.0 count

Reviews

C**D

Fit for purpose

Spot on aircon here we come

18.09.2025

L**A

Perfect

Fitted perfect ,was able to get AC fill no issue

12.06.2025

R**O

Soluzione per attacchi diversi

Adattatori buoni

24.11.2025

E**Z

Funcional

Funcionó pero se dañó en la primera

20.05.2022

M**.

Super Reparatur Lösung

haben einen alten Ami umgerüstet. Mussten nur die Ventile aus den alten Anschlüssen entfernen. Passt genau und kinderleicht

6.08.2025

A**R

Nulle , vendeur qui n informe pas des dimensions pour flouer le client

Attention ! Ne convient pas a un valve de climatisation r12! Diametre de la valve r12 9.1mm et de l adaptateur fourni 10.2 mm si le vendeur avait informer des dimensions j aurais su que c etait pas une arnaque!!!!

11.07.2025

V**A

THE ADAPTER.

FITS PERFECT...THANK YOU

9.12.2025

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