2012 Boss rear end cover .
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Cobra R Member



Joined: February 18, 2008
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From: Biloxi,Mississippi
Hey all,I got me one of these off ebay for $ 108.00 shipped,I am now having it painted and drilled out / taped for fill and drain plugs ,its suppost to help keep rear end gear oil cooler .,I will post more pictures later .

------------Ford part # number for the Boss cover ( longer ) bolts is ( 6L1Z-4346-AA ).
-------------Ford Part # number for Boss rear end cover is ( M-4033-k ).


------------Ford part # number for the Boss cover ( longer ) bolts is ( 6L1Z-4346-AA ).
-------------Ford Part # number for Boss rear end cover is ( M-4033-k ).
Last edited by ricksGT/CS; May 19, 2011 at 10:45 AM.
Thread Starter
Cobra R Member



Joined: February 18, 2008
Posts: 1,511
Likes: 3
From: Biloxi,Mississippi
Hey all,I got me one of these off ebay for $ 108.00 shipped,I am now having it painted and drilled out / taped for fill and drain plugs ,its suppost to help keep rear end gear oil cooler .,I will post more pictures later .
Attachment 87468
Attachment 87469
Attachment 87470
Attachment 87468Attachment 87469
Attachment 87470




Thank's to all for looking in,,I will post more pictures after I get it on .
Thread Starter
Cobra R Member



Joined: February 18, 2008
Posts: 1,511
Likes: 3
From: Biloxi,Mississippi
,,here is something really funny ,I just ordered the rear end cover bolts that are used with this Boss cover from Ford ,cost me $ 100.00 ,for 10 of them ,they are longer than the stock ones ,so by the time I'm done with this little Mod ,I'll have just over $ 300.00 dollars in everthing ,,the cover ,bolts ,Royal Pupple Max-Grear synthetic oil,( SAE 75W-140 ),$ 18.00 a quart ,,and Ford friction Modifier,$ 6.00 at Ford dealership 4fl oz bottle .but it should last for many miles and years to come,,but most important ,it will be alot better than it is stock now.
Last edited by ricksGT/CS; May 9, 2011 at 11:39 AM.
im pretty sure RP gear oil has frict mod in it.
to hell with $100 in factory bolts. could have ordered ARP stainless bolts or studs for less.
hard ware store. its a NON-load bearing bolt. grade 5 would be more than enough. or stainless cap screws
to hell with $100 in factory bolts. could have ordered ARP stainless bolts or studs for less.
hard ware store. its a NON-load bearing bolt. grade 5 would be more than enough. or stainless cap screws
Thread Starter
Cobra R Member



Joined: February 18, 2008
Posts: 1,511
Likes: 3
From: Biloxi,Mississippi
,,its still all good ,thanks for the info
Thread Starter
Cobra R Member



Joined: February 18, 2008
Posts: 1,511
Likes: 3
From: Biloxi,Mississippi
Thread Starter
Cobra R Member



Joined: February 18, 2008
Posts: 1,511
Likes: 3
From: Biloxi,Mississippi
here are a few pictures of the install ,,
,,,Attachment 88033
Attachment 88034
Attachment 88035 no stopping now .
,,,Attachment 88033Attachment 88034
Attachment 88035 no stopping now .

I got out 76 oz's of old gear oil ,thats two ( 2 ) quarts and and 12 oz's.

Last edited by ricksGT/CS; May 18, 2011 at 06:02 AM.
Thread Starter
Cobra R Member



Joined: February 18, 2008
Posts: 1,511
Likes: 3
From: Biloxi,Mississippi
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