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STM does not warranty batteries
put it on a charger first
Discharges will occur in the Spark Support Gap (space between the tip of insulator and the base of the outer electrode) to help prevent carbon buildup
Updated in January 2026
Skunk2 High-Pressure Radiator Cap Type A (359-99-0020) Koyo STM does not warranty batteriesThe Skunk2 Radiator Cap increases internal radiator pressure, which results in a higher coolant boiling point and a more efficient cooling system. Skunk2 Radiator Caps feature an open valve pressure of 1. 3 kg cm which is . 2kg cm higher than most OEM radiator caps. Fits most aftermarket radiators, and most Mitsubishi, Subaru, Nissan and Honda applications. Vehicle Fitment: Koyo aluminum radiators with fill necks and most aftermarket radiators. 1992
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