what size are the caliper bolts they apear to be hex bolts but 5/16 is to small 3/8 to big 8mm small 10mm to big is a special size tool required
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2006 Mercury Mariner
Question: front brake caliper
Answer #1munkyrench March 02, 2009, 10:52Master
Have you checked to see if Autozone.com has that info? They have many repair manuals online for free!
Answer #2adonorio December 31, 2009, 16:41Rookie
It takes a 9mm hex. they are not common in sets.
Answer #3Visitor, March 19, 2010, 05:58
they are a 9 mm. sears has a set with that size. auto zone does not have that size.
Answer #4Visitor, August 02, 2010, 11:06
Lowe's has a set of Kobalt keys with a T-handle for like $12. Sears and autozone sets are very full sets and are over $20.
Answer #5Visitor, September 20, 2010, 12:45
They are 9mm Allen
Answer #6Visitor, November 17, 2010, 06:15
It is a 9mm allen, I finally found a set of Allen wrenches that included a 9mm at Home Depot for around $11, Sears did not have one, nor did O'Rielly's
Answer #7Visitor, February 11, 2011, 17:11
These are 9mm hex bolts. Had to search for a 9mm, finally saw one at Lowes of all places, bought a set of allen wrenches. Works well.