I need to know how the front bearings look for a 2002 montero sport

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3.5L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system.

Mitsubishi Montero, Sport 1998-06 Firing Orders Repair Guide

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https://www.google.com/search?q=2002+Mitsubishi+Montero+Sport+3.5+firing+order

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Question edited for clarity

Not easy to get to or change according to this.

https://www.justanswer.com/mitsubishi/5693h-crankshaft-position-sensor-located-2003-montero-is-diagram.html

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https://www.google.com/search?q=2002+montero+sport+xls+2wd+3.5+v6+crankshaft+sensor+location

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Have them replaced

Go to You Tube Video & watch how

Do both sides

I would got to a local shop that has been there for
20 years,not a franchise

If they are in good condition, why replace them? Replace them with the same exact size you remove from them. You do not have to go 20 over or 30 over unless you have the engine or crankshaft turned at a shop where they remove a small amount of metal to make the surfaces nice. If that happens, you would need to compensate for that metal removal by installing an over sized bearing. But the shop would also be required to inform you on what size if that happened.

I use a prerun grease that is black. really doesn't matter as long as it is thick enough to stay until your ready to start the motor. Don't forget to prefill your new oil filter with new oil. This will decrease the time that oil fills the filter and save milliseconds that could cause damage to new parts. Also, go to the auto store and buy a bottle of zinc additive for the first breakin period of the engine bearings. Zinc is a very needed substance in the oil for new engines. It will help protect your engine during break in period. I use the lucas brand and pour it in with the new oil. I also use Castrol oil because it keeps engine parts clean and I have used it all my life, (my preference only) Stick with the 30wt oils because they seem to have the better additives needed, but use the zinc on first 500 miles. Take your time with what your doing, any mistake will mean disaster in a very short time. I know by experience it doesn't take more then 25mph to seize an engine. Clean your passages also. Anything stuck in a passage will crash a motor faster then you can shut it off. Watch you oil pressure and be sure it comes up quickly when first starting. All that hard work your doing, you better check yourself over and over for mistakes.

You should check the big end and crank main bearings for damage.

Probably can, if they appear the same, and have the same dimensions. Probably the same part, I don't know for sure.

Your capable of opening the hood to
look aren't you? Or going to an auto
parts store for help & buy all of them

If you don't know how many you have,
I would assume you never inspected them to
see their condition

What's next?

How do I install them!!

Could be a wheel bearing and/or a rear differential pinion bearing, which usually get worse when under load(going up hill). I would definitely start there.

if it is anything like my 98 montero sport 3.0 all you need is a socket set, the tensioner should be close to the pulley near the alternator

P0154 HO2S-11 (Bank 1 Sensor 1) No Activity Detected
P0174 Fuel System Lean (Bank 2)