Home / Engine / Kat’s K4B frost plug engine heater View cart “Subaru X1321AA999 gasket set” has been added to your cart. Kat’s K4B frost plug engine heater$12.00 1 in stock Kat's K4B frost plug engine heater quantity Add to cart SKU: ENG-MB-006 Category: Engine Description Description Kat’s K4B frost plug engine heater – SKU ENG-MB-006 New Old Stock Kat’s K4B frost plug engine heater – pulled from the inventory of Merchand Brothers, long-time independent mechanics in White River Junction, Vt. Related products SPM 60720 gasket $1.00 Add to cart Atsugi F1-2250 clutch disc $20.00 Add to cart Subaru 28015AA100 oil seal $5.00 Add to cart SPM 60712 gasket $1.40 Add to cart