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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R12 to R134A Adapter, R12 R22 to R134A High/Low Fitting Port Retrofit 1/4’’ to 7/16"-20 UNF Conversion Adapter, Fits for AC Air Conditioner Refrigerant

Product ID: 153532540

Details

Brand
Aupoko
Color
Blue Red
Connector Type
Cap
Item Weight
60 Grams
Manufacturer
Aupoko
Material
Metal Plastic

⚡Tool-free, quick install with Schrader valves

🔧Universal 1/4'' to 7/16"-20 UNF retrofit

🛡️Durable metal & heat-resistant plastic build

$21.59

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Description

🔄 Upgrade your AC game with effortless retrofit power!

BUILT TO LAST - Crafted from premium metal and reinforced plastic to withstand high pressure and heat for reliable, long-term use.
PRECISION FIT - Standardized high/low side dimensions ensure secure, leak-proof connections every time.
NO TOOLS NO HASSLE - Quick, tool-free installation with built-in removable Schrader valves and protective caps to prevent leaks and dust.
SEAMLESS COMPATIBILITY - Effortlessly converts R12/R22 ports to R134a standard fittings for all your AC retrofit needs.
ALL IN ONE RETROFIT KIT - Includes both high and low side couplers plus protective caps—everything you need in one sleek package.

The R12 to R134A Adapter kit is a professional-grade retrofit solution designed to convert legacy R12/R22 AC refrigerant ports to modern R134a fittings. Featuring universal 1/4'' to 7/16"-20 UNF compatibility, durable metal and heat-resistant plastic construction, and tool-free installation with built-in Schrader valves, this 4-piece set ensures a secure, leak-proof connection for automotive and HVAC air conditioning systems. Perfect for managers and pros who demand efficiency and reliability in their maintenance toolkit.

Specifications

ASIN	B07SZKY6R1
Best Sellers Rank	#16,136 in Automotive ( See Top 100 in Automotive ) #113 in Air Conditioning Line Repair Tools
Brand Name	Aupoko
Color	Blue, Red
Connector Type	Cap
Customer Reviews	4.0 4.0 out of 5 stars (774)
Item Weight	60 Grams
Manufacturer	Aupoko
Manufacturer Part Number	R12 to R134a Fitting Retrofit
Material Type	Metal, Plastic
Model Number	Aupoko
Number of Pieces	4
Set Name	R12 to R134A Conversion Adapter Set (4 Pcs)
Size	R12 to R134A Conversion Adapter (2 Pcs)
Thread Size	7/16 to 20UNF
Thread Type	UNF
UPC	606034661257
Unit Count	1.0 Count

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$21.59

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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