Not sure where you got that part number but its no good. The correct # is 2200341 and here's an ebay listing and a list of those that will fit.

B 1998 Polaris Big Boss 500 6x6 Rear Wheel Hub Hubs 1 | eBay

ear Product Model Assembly
2004 ATV A04BG50AA SCRAMBLER 500 4X4 REAR WHEEL - A04BG50AA/FA
2003 ATV TRAIL BLAZER 400 REAR WHEEL - A03BA38CA
2003 ATV SCRAMBLER 500 4X4 REAR WHEEL - A03BG50AA
2002 ATV SCRAMBLER 400 2X4 REAR WHEEL - A02BA38CA
2002 ATV SCRAMBLER 500 2X4 REAR WHEEL - A02BA50AA/AB
2002 ATV MAGNUM 500 REAR WHEEL - A02BA50AA/AB
2002 ATV SCRAMBLER 500 2X4 REAR WHEEL - A02BA50AA/AB
2002 ATV SCRAMBLER 400 4X4 REAR WHEEL - A02BG38CA
2002 ATV SCRAMBLER 500 4X4 REAR WHEEL - A02BG50AA/AC
2002 ATV SCRAMBLER 500 4X4 FREEDOM REAR WHEEL - A02BG50AA/AC
2002 ATV XPLORER 400 REAR WHEEL - A02CG38CA
2001 ATV XPLORER REAR WHEEL - A01AG25CA
2001 ATV SCRAMBLER 400 2X4 REAR WHEEL - A01BA38CA
2001 ATV SCRAMBLER 500 2X4 REAR WHEEL - A01BA50AA
2001 ATV SCRAMBLER 500 2X4 REAR WHEEL - A01BA50AA
2001 ATV SCRAMBLER 500 4X4 REAR WHEEL - A01BG50AA
2001 ATV SCRAMBLER 500 4X4 REAR WHEEL - A01BG50AA
2001 ATV XPLORER 400 REAR WHEEL - A01CG38CA
2000 ATV XPLORER REAR WHEEL - A00AG25CA
2000 ATV SCRAMBLER 2X4 REAR WHEEL - A00BA38CA
2000 ATV SCRAMBLER 400 REAR WHEEL - A00BG38CA
2000 ATV SCRAMBLER 500 REAR WHEEL - A00BG50AA
2000 ATV XPLORER 400 REAR WHEEL - A00CG38CA
1999 ATV SPORT 400 REAR WHEEL - A99BA38CA
1999 ATV SCRAMBLER 400 REAR WHEEL - A99BG38CA
1999 ATV SCRAMBLER 400 REAR WHEEL - A99BG38CB
1999 ATV SCRAMBLER 500 REAR WHEEL - A99BG50AA
1999 ATV XPLORER 400 REAR WHEEL - A99CG38CA
1999 ATV TRAIL BOSS REAR WHEEL DRIVE - A99AA25CA
1999 ATV BIG BOSS 500 6X6 REAR WHEEL DRIVE - A99AE50DA
1999 ATV INTL BIG BOSS 500 6X6 REAR WHEEL DRIVE - A99AE50DA
1999 ATV XPRESS 300 REAR WHEEL DRIVE - A99CA28CA
1999 ATV XPLORER 300 REAR WHEEL DRIVE - A99CC28CA
1998 ATV NORWEGIAN BIG BOSS 500 6X6 REAR WHEEL DRIVE - S98AE50E
1998 ATV Swedish Big Boss 500 6X6 REAR WHEEL DRIVE - S98AE50E
1998 ATV BIG BOSS 500 6X6 REAR WHEEL DRIVE - S98AE50E
1998 ATV MAGNUM 2X4 REAR WHEEL DRIVE - W98AA42A
1998 ATV NORWEGIAN MAGNUM 4X4 REAR WHEEL DRIVE - W98AC42A
1998 ATV SWEDISH MAGNUM 4X4 REAR WHEEL DRIVE - W98AC42A
1998 ATV MAGNUM 4X4 REAR WHEEL DRIVE - W98AC42A
1998 ATV SPORT 400L REAR WHEEL DRIVE Sport 400L W98BA38C
1998 ATV TRAIL BLAZER REAR WHEEL DRIVE Trail Blazer W98BA25C
1998 ATV TRAIL BOSS REAR WHEEL DRIVE Trail Boss W98AA25C
1998 ATV XPLORER 300 REAR WHEEL DRIVE XPLORER 300 W98CC28C
1998 ATV XPLORER 400L REAR WHEEL DRIVE XPLORER 400L W98CC38C
1997 ATV Big Boss 6x6 400L REAR WHEEL DRIVE BIG BOSS 6X6 400L W97AE38A
1997 ATV BIG BOSS 6X6 400L REAR WHEEL DRIVE BIG BOSS 6X6 400L W97AE38A
1997 ATV MAGNUM 2X4 REAR WHEEL DRIVE Magnum 2X4 W97AA42A
1997 ATV NORWEGIAN MAGNUM 4X4 REAR WHEEL DRIVE Magnum 4X4 W97AC42A, Swedish Magnum 4X4 S97AC42E and Norwe
1997 ATV SWEDISH MAGNUM 4X4 REAR WHEEL DRIVE Magnum 4X4 W97AC42A, Swedish Magnum 4X4 S97AC42E and Norwe

 

thanks for info

Thank You, I will check it out. I got the part number off the old left rear wheel hub , from the inside of the hub. I need the bearings and spacers too. the old splines are totally gone.
I seem to have gotten more info here than a day on the computer with the Polaris stores. '
One thing too, this rear drive is a differential driven.

 

Welcome to the board!:med:

 

Quote..."One thing too, this rear drive is a differential driven."

Uhh...something's not adding up. Microfiche shows the rear drive as chain driven for a 98 Big Boss 6x6. You probably better check the model and year again.

 

more info

I went and checked more on vehicle. it is 98 ranger , 6x6, side by side seats, does not say big boss. looks to have the same hub as a sportsman.

 

it is just a ranger, 6x6, 98, side by side. ser # 4xARF50AXd070953 . looks like both right and left sides are the same.

 

LOL...Polaris didn't make a Ranger till 99. It may have been built in 98 but it'd be a 99 model. There's no listing for other hubs that fit but some might. Part # is 5131982.
Good luck!

 

Must be a 99 then, the friend has two of them and said they were 98s. the service manual he has is copyright 1998, but on title, is pn 9914985. At any rate, I need to find a rear hub. There some on e-bay that look like the one.
thanks for your time.