ZF5-42 ???
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Elder User
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From: Over the hump in Pahrump
ZF5-42 ???
My ZF5 is behind my 90 351w (factory install) ... Question, what kind of a pilot bushing/bearing will I find when I pull the trans? I think the T.O bearing is on it's way out ... who makes a better quality TO bearing for it, and are there greasable bearings avaliable... I have NOT had good luck with the T.O. bearings in this trans ... need to fix it for the LAST TIME !!! Dave 
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From: Over the hump in Pahrump
Well, I would have thought by now someone would have the knowledge of which is used in a ZF5-42 a (pilot) bearing or a bushing and if there are such things as grease-able T.O. berings for the ZF5-42 I know the parts houses don't have a clue ???
1st Gear
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Aftermarket front bearing assemblies can be hit or miss—some hold up just as well as OEM, especially if they’re from reputable brands like Timken, SKF, or TBS, but lower-quality or off-brand bearings can wear out faster, make noise, or even develop play prematurely. If the aftermarket unit has been quiet, smooth, and reliable for several years, there’s probably no urgent need to replace it purely for peace of mind, but if you're hearing noise, noticing uneven tire wear, or planning a long-term keep of the vehicle, switching to an OEM bearing assembly could offer added confidence in durability and performance, especially since OEM parts are designed to exact vehicle specs and tend to have tighter quality control on the KF060AR0 bearings and seals.
Last edited by tonychap; Jul 3, 2025 at 08:58 PM.
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