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JEGS Thermactor Plugs for Small Block Ford Cylinder Heads
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JEGS Small Block Ford Thermactor Plugs are designed to close off the air passages which are located in the front and rear of the cylinder heads that are commonly used for the crossover tubes connected to the A.I.R. Pump. Fits stock and most aftermarket heads. For off-road use only. 4/pkg. Made in the USA.