R12 to 134a High Side Thread Down Coupler #3070
- With 1/4" ends to fit R12 gauges
- Thread down couplers are used for hard-to-reach schrader valves
- May be used with any standard R12 manifold hoses
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R12 to 134a Lowside Thread Down Coupler #3065
With 1/4" ends to fit R12 gauges. Thread down couplers are used for hard-to-reach schrader valves.

High Side & Low Side Retrofit Set #3000
Contains 1 high side adapter and 1 low side adapter. This kit makes converting a no-brainer! Blue cap is low side -- low side on most vehicles is larger line. Red Cap is high side. For more information on this product, click the product title above.