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Old 12-31-2013, 12:48 AM
4.8isX5 4.8isX5 is offline
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I believe AGA actually patended it if i recall right. Id go with them just for the reason they know their n62s especially making tool for valve seals which sinplifies the job so much. Yes seals still could have been done without pulling heads but its a bunch of tools most diyers dont have and they made it simple diy-able.
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