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The Sub-Zero SZ345 is a DIY recharge kit for car air conditioning systems that use R-134a refrigerant. It combines roughly 17 oz of R-134a with about 1 oz of additives: a leak sealer for rubber components plus acid and moisture eliminators meant to extend system life. A reusable charging hose and gauge are included, so one kit covers a single top-up. Against rivals, it bundles sealant and conditioners in one can rather than selling plain refrigerant alone, but it fits only R-134a systems, not the R-1234yf used in most newer cars.
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The Sub-Zero SZ345 1 is a synthetic refrigerant kit for recharging a vehicle's A/C system. Its formula uses Cool Boost technology to help the A/C produce colder air.
The kit contains approximately 17 oz of R-134a and 1 oz of additives. The additives seal common leaks in rubber components. They also help extend the life of the A/C system by eliminating acid and moisture buildup.
A reusable charging hose and gauge come with the kit.
