I wasted 2 cans of R1234 before I found out the two adapters would not allow freon to enter the system. No instructions as to what the remedy is.

Hi, Regarding the high and low pressure quick connector, it needs to be screwed up to the top during installation, and when it is working, it needs to be screwed down so that the internal needle presses the valve body of the car compressor interface to achieve the connection.

warranty? I purchased this kit last year and just got it out just to find out the r134 cuppers leak and the vacuum hose ends don't fit.

Good luck with warranty. Yeah, it's junk.

Does this connect to 1/2" acme tank adapters?

Package include 1pc tank adapter, 1/4 inch male to 1/2 inch female, hose fitting 1/4 inch, can tap fitting 1/4 inch, thanks for your question.

How to download the instructions that they say is on the product page?

I never downloaded the Manual for this set, I googled a you tube video on how to use the set.

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Master #B401

Product ID: 149567985

Details

Brand
Lichamp
Item Weight
8.27 Pounds
Item dimensions L x W x H
11.42 x 11.81
Material
Aluminum
Thread Type
Npt

🌈4 color-coded 5FT hoses for easy identification

⚙️Durable brass & aluminum build for longevity

🛠️4-valve manifold for precise control

WS$1133

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Description

❄️ Charge like a pro, cool like a boss!

HEAVY DUTY DURABILITY - Crafted from premium brass and aluminum, built to withstand rigorous professional use without compromise.
USER FRIENDLY OPERATION - Step-by-step manual included to streamline AC charging, evacuation, and recovery—perfect for pros and ambitious DIYers alike.
PRECISION 4 VALVE CONTROL - Master your AC diagnostics with a professional-grade manifold designed for R1234YF & R134A refrigerants.
VIBRANT COLOR CODED HOSES - Quickly connect and identify high/low pressure and vacuum lines with 5-foot hoses in red, blue, yellow, and black.
WIDE PRESSURE RANGE GAUGES - Monitor pressures from 0-550 PSI (low) to 0-800 PSI (high) with easy-to-read Fahrenheit dials for accurate readings every time.

The LICHAMP AC R1234YF R134A Gauge Set is a professional 4-valve manifold gauge kit compatible with R1234YF and R134A refrigerants. Featuring four 5-foot color-coded hoses, durable brass and aluminum construction, and wide-range pressure gauges, it enables precise automotive AC diagnostics, freon charging, evacuation, and recovery. Designed for ease of use with a detailed manual, it’s the ultimate tool for mechanics and enthusiasts aiming to maintain peak AC performance.

Specifications

ASIN	B07R1M5T8G
Best Sellers Rank	#99,799 in Automotive ( See Top 100 in Automotive ) #44 in Air Conditioning Manifolds
Brand	Lichamp
Brand Name	Lichamp
Customer Reviews	4.3 out of 5 stars 805 Reviews
Item Dimensions	11.42 x 11.81 x 3.35 inches
Item dimensions L x W x H	11.42 x 11.81 x 3.35 inches
Manufacturer	Lichamp
Material	Aluminum
Material Type	Aluminum
Model	MGS1234B1
Number of Items	1
Number of Packs	1
Part Number	MGS1234B1
Thread Style	Npt
Thread Type	Npt
UPC	741025730694
Unit Count	13 Count

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WS$1133

Duties & taxes included

In stock

Sold byAmazon SamoaDelivered 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 Samoa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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