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A permanent external oil leak repair kit that you can install with basic hand tools in just an hour or two.​​ 73dipstick Add to Cart The leak at the dipstick flange is a well known issue with the 7.3 Powerstroke motor. The leak develops because the factory O-ring mounted inside the adapter swells over time due to exposure to oil. As the seal swells it actually deforms the inner piece of the adapter causing theContinue reading