Diesel fuel injector cups are small metal sleeves that are inserted into the engine block to provide a surface for the fuel injectors to seal against. They are typically made of brass or steel and are designed to withstand the high pressures and temperatures of the diesel engine.
The main function of diesel fuel injector cups is to prevent fuel leaks and maintain proper fuel pressure within the engine. Over time, however, these cups can become worn or damaged, which can lead to fuel leaks and other engine problems.
When should diesel fuel injector cups be replaced? It is generally recommended to replace injector cups every 100,000 miles or so, or whenever they show signs of wear or damage. Signs that your injector cups may need to be replaced include fuel leaks, reduced engine performance, and increased fuel consumption.
*Please note this item is a Quality aftermarket component. ( Interstate McBee , PAI , IPD , CTP , KMP , OEM and more )
Injector Sleeve Kit ( Stainless ) ( 6 PACK )
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PART # OEM # DESCRIPTION : QTY:
821013 20536487 O-Ring 6
891987 21401136 Injector Sleeve 6