Crown Victoria Idler Arm Frame Fasteners:

• The splined bolts which retain the idler arm to the frame should in theory never have to be replaced. But if the vehicle has been in contact with winter chloride road salts, the studs and associated nuts may be corroded together and refuse to seperate.
• Before attempting to remove the nuts, spray some penatrant oil on the nuts a couple days ahead of time. The idler arm fasteners can be accessed by simply lifting the hood and reaching downwards into the front passenger area of the engine bay.
  
• If the nuts still refuse to turn after repeated application of penetrant oil, the leverage from a pneumatic air wrench or large two foot breaker bar can likely loosen the nut from the stud, but it can also strip the knurls off the bolt where it passes through the frame. In such a case, one can slide the stripped bolts out of the frame and install new bolts with new splines on them. Or one could use a socket wrench to hold the bolt stationary while the nut is being turned. If this option is chosen, it would be a wise idea to tape the socket to the extension bar so that it does not fall inside the frame. "Fishing" a lost socket out of the front area of a crown victoria frame is not fun. And the internal lateral reinforcements greatly complicate this task.
  

Part Number
N800937-S60	1995	2002	Nut Hex Lock M12 x 1.75 Supercedes N800937-S55	$18.48
N805991-S428	1995	2002	Bolt M12 x 1.75 x 42 Hex Flange Knurl	$8.66
W520214-S441		1997	Nut M12 x 1.75 Hex Flange Lock Supercedes N800937-S100 W520214-S427	$10.32
N805991-S190		1994	Bolt	Obsolete
N800937-S151		1994	Nut	Obsolete

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