3/16" to 1/4-20 Flare Brass Adapter #3035
- Connects to high side A/C service port and allows the use of an R12 manifold gauge set.
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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.