8 - ORings per Kit. Ford 6.0L Power Stroke Oil Rail Repair O rings Kit.
Fuel Rail Adapter, High Pressure Oil Rail Adapters Leak Test Kit for Ford 6.0L
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High Pressure Oil Rail Adapters Leak Test Kit for Ford 6.0L Powerstroke ( 3PCS )
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High Pressure Oil Rail Adapters Leak Test Kit for Ford 6.0L Diesel Engine