It is an expensive fix because, most times, it requires removing the transmission or dismantling the engine. What is a rear main seal, and how does it work? The rear main seal is found at the back of the engine between the engine and the transmission, which seals the crankshaft’s back end from leaking. So, in this article, we’ll discuss at length the signs of a rear main seal leak, what causes a rear main seal leak, and how to replace it. It can cost you $600 to $900 or more at a dealership. For many car owners, such news could cause a bad day because the rear main seal replacement is one of the most expensive, most labor-intensive, and most-dreaded repair jobs to do on your vehicle. The primary cause of the rear main seal failure is rupture inside the engine or on a component connected to the engine. The rear main seal is one of the essential seals in your vehicle that you don’t expect to leak unless you’re dropping your engine or transmission because replacing this seal requires dissembling the engine or transmission before you can reach it. So, don’t be surprised when a mechanic tells you that the oil leaks from the rear main seal. We have seen all billet caps get either too tight or loosen up, as well as get very hot when the engine is up to temp and the cap needs removed.Do you see oil puddles under your vehicle, especially when the engine is running? That might be one of the most noticeable rear main seal leak symptoms. We also decided the best option was to re-use your stock oil cap with a billet cover to set off the look. The breather is threaded for a -16 o-ring fitting if you want to use your own fittings and hose.
AN style fittings are available for an additional cost. These valve covers will come with our custom billet breather and a 3/4 inch hose to keep costs down. This is a big step forward in the aftermarket valve cover market.
If your engine does not have excessive blow by then you will not need a catch can. A baffle system was incorperated into this valve cover and was extensively tested. These valve covers are made from aircraft quality 6061-T6 aluminum and come with all stainless steel fasteners. We designed our Billet Valve Cover 03-05 in house for the best balance of fit, finish, and functionality, while keeping your budget in mind.
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