Core Liquid Defoamer Gallon Bottle KB112 This is the D4 replacement

This is the D4 replacement Sebo D4 bad door seal

This is the Bissell 24A4 Lower Nozzle Assembly

This telescoping wand connects handle of the Sanitaire SC420A backpack Vacuum to the powerhead

Available in 3 colors — 00-Cream

Core Liquid Defoamer Gallon Bottle KB112 This is the D4 replacementCore Liquid Defoamer Gallon Bottle Keep your carpet extraction equipment running at peak performance with the Core Liquid Defoamer. This professional strength, gallon size defoamer is engineered to rapidly eliminate foam buildup in recovery tanks protecting your carpet extractor, improving suction efficiency, and extending the life of your cleaning equipment. Key Benefits Fast acting foam control quickly breaks down and prevents foam in wet dry vacuum