Brass Injector Sleeve Cup

Description

7.3 Powerstroke Injector sleeve cup

OEM Motorcraft replacement cups. Replacement Heui Injector Brass Sleeve also known as Powerstroke Injector Cup.

Symptoms of the injector cup failure include fuel in engine coolant and water pump failures. The 7.3L Power Stroke injectors sit in a brass sleeve that separates the injector, and fuel, from the engine’s coolant. These brass sleeves weaken and fatigue from age and tend to split and fail.

A common symptom is finding fuel in your cooling system. This happens because the fuel system typically operates at around 60 psi of pressure, where as the coolant system operates at a much lower pressure so the fuel gets pumped into the coolant when the sleeve fails and cracks. Special tools are needed for removal, which can be rented.