Mobling Car A/C Repair Kit — 270-Piece O-Ring Set + 40 Valve Cores with Remover Tool for R12 & R134a, Compact Storage

Mobling Car A/C Repair Kit is a complete 270-piece O-ring assortment plus a 40-piece valve-core set and removal/installation tool designed to repair and maintain R12 and R134a automotive air conditioning and various valve stems.

This all-in-one kit collects common sizes of rubber O-rings and multiple air conditioning valve cores in a compact, light-latching storage system so you can diagnose and fix leaks or replace worn parts quickly. The kit covers the most frequently used R12 and R134a valve cores, and several cores are compatible with tire valve stems, making it a versatile resource for home mechanics and professional shops. Everything ships from an American family-owned business that emphasizes value and practicality.

What parts are included and how are they organized?

The kit contains 270 O-rings sorted by size in a lightweight, compartmented box plus 40 valve cores presented in a separate latching container. A dedicated valve core removal and installation tool is included so you don’t need extra tools to start common AC or valve work.

• 270-piece O-ring assortment covering multiple diameters and thicknesses for fittings and seals.
• 40-piece valve core set with cores for R12 and R134a systems and universal-fit options.
• Compact, light-latch storage boxes keep parts organized and transportable.
• Valve core remover/installer tool for rapid replacement without additional purchases.

Which vehicles and systems will this kit work with?

This kit is designed for broad compatibility rather than brand-specific repairs. The valve cores include the most common R12 and R134a types used in many passenger vehicles, light trucks, and older AC systems, and O-rings fit a wide range of fittings and flanges.

• Fits many domestic and import passenger cars and light trucks using R12 or R134a valve cores.
• O-rings useful for AC lines, fittings, hose ends, and general vehicle sealing needs.
• Some valve cores are compatible with tire valve stems for added utility.
• Ideal for workshop bench use, roadside kits, and mobile service gear.

How do I use the valve core tool and O-rings safely?

Use the included valve core remover to extract and install cores with the vehicle depressurized and the system off. Match O-ring size to the mating surface and apply an appropriate lubricant when reinstalling; avoid overtightening fittings to prevent damage.

• Always depressurize A/C or tire valves before removing cores to prevent injury.
• Select the O-ring by diameter and cross-section to ensure a proper seal.
• Use a small dab of compatible lubricant to seat O-rings without stretching them.
• Keep the storage boxes closed to prevent mixing and loss of parts.

What maintenance tasks can this kit help with?

It’s intended for routine service and light repair tasks: replacing leaking O-rings at hose and fitting junctions, refreshing valve cores that lose hold, and doing quick diagnostic swaps to isolate leaks. It’s not a substitute for certified refrigerant service when system evacuation, charging, or major component replacement is required.

• Replace worn or brittle O-rings on connectors, fittings, and access ports.
• Swap valve cores to stop slow leaks from Schrader-style valves.
• Keep a selection of cores for both R12 and R134a service jobs.
• Perform quick troubleshooting or emergency roadside repairs to restore basic seal integrity.

Who is this for: The Mobling Car A/C Repair Kit is aimed at DIY mechanics, mobile technicians, and small repair shops that need an affordable, organized parts assortment for routine A/C and valve-stem maintenance. If you want a compact, ready-to-use selection of O-rings and valve cores to handle common seals and valve replacements without ordering single parts each time, this kit provides the range and portability to do that efficiently.