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12-08-2017, 12:57 PM
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FF.Com.Au Hardcore
Join Date: Jun 2012
Posts: 1,017
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Hello, can someone please help to find the best place to get the o rings on the thermostat balance pipe that runs water between the two heads on the 5.4 boss motor. Mine is leaking a bit of coolant from the o ring on the drivers side head.
Last edited by boss351290; 12-08-2017 at 12:59 PM. Reason: V |
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15-08-2017, 03:09 PM
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R51 Pathy, 91 Jayco Swan
Join Date: Dec 2010
Location: Mackay, QLD
Posts: 3,635
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Get them from America. Summit Racing ect. Usually the pipe is stuffed. They have total replacement kits utilising coolant hose in America.
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15-08-2017, 04:55 PM
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#3 | ||
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FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 7,723
 
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What month/year 5.4 do you have as they are different for the RH bank.
1/7/2002 - 30/9/2005 RH: 3L3Z 8C387 AA, LH: 3L3Z 8C388 AB 1/10/2005 on RH: 3L3Z 8C387 AB, LH: 3L3Z 8C388 AB I think the only one you can still buy from Ford is the later RH one. 3L3Z 8C387 AB. The cross pipe has a part number of 3L3Z 8C368 LA. |
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Boss 5.4 thermostat balance pipe o rings
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