Holley 97-425 - Heater Block-Off Kit

Some engine swaps and racing applications do not need the heater, but it is tough to block off with the 7.3-liter Godzilla engine. The factory rear hose port is retained with a bolt (and the port is not tapped), and the front port is a tube with a hose barb that isn't removable. This kit includes a billet plug with an o-ring seal retained by a bracket and bolt, and the second plug is a rubber cap with a billet cover that clamps over the tube. These caps and plugs provide a more attractive appearance than other options.

Features:
• Elimination of the heater is difficult on the 7.3-liter Godzilla engine since the hose inlet and outlet passages are tough to plug & look cobbled up using traditional hoses, clamps, and plugs
• Machined steel billet plug with o-ring seal, mounting bracket, and retaining bolt – blocks off the rear port
• Special rubber cap with clamp-on aluminum billet cover – blocks off the front port
• Plug and caps designed to handle high pressure & high temperature – typical conditions of the cooling system
• Easy Installation without the need to tap holes or fabricate special plugs and caps
• Steel plug features a clear zinc plated finish, and the billet aluminum cap is black anodized – for a more attractive finished look (than other options)
• Ideal for use in engine swaps or racing applications that do not require a heater