Belt tensioner for tow pack cars

Hello all, does anyone know where to get a replacement fan belt tensioner for an LT1 Tow Package car? GM part #10186118

No luck on line, GM says the part is discontinued...Amazon, RockAuto...No dice.

I don't want to remove the Tow Pack to convert to duel electric fans if I can avoid it.

Thanks in advance for any and all assistance.

I can try my Delco supplier on Monday. LMK if you have a Delco PN... if it exists, they'll have a number for it.

Thank you very much Jason. The above PN is also listed as the AC Delco PN. I found a couple US sites that say they have them but when I went to order...their system said out of stock. Ie: www.gmpartsheadquarters.com

Ok, my local supplier is Hosie and Brown. If it's available in North America, they'll get it. I get trade price, do you want me just to order it?

Try BUICKNUTT. He claims to have a few. They are not available aftermarket.

they can be un seized you need a vice to get it back together,. you can replace the bearing,.

Thank you all very much for the replies. Jason if your source can get one yes pls!

Just off the phone. No luck. They checked with four suppliers, nothing. Delco, Gates, etc, no one has it.

Go with good used or rebuild one.

Thank you very much for trying. Seems like another one of those B body parts that has gone the way of the DoDo. Can't rebuild this particular unit as its MIA...the shop that was servicing the car took it off and tossed it not realizing they could not get a replacement. If anyone has a good used one pls let me know...I have tossed several myself over the years...of course now I want to keep a Tow Pack and can't find one.

As I stated earlier, check with BUICKNUTT. He says he has a number of them.

Thanks Fred is BUICKNUTT a users name?

https://gmlongroof.4umer.com/t9886-the-roadmaster-farm-parting-out-6-buick-wagons-1-1991-2-1993-s-2-1996-more-parts-from-previous-parting-outs

Tom

Thank you very much Tom...much appreciated.

Thanks for the referrals Fred/Tom

Big Wagon has been in touch with me...I have about 2 of these tensioners in stock

Dan

BUICKNUTT wrote:

Thanks for the referrals Fred/Tom

Big Wagon has been in touch with me...I have about 2 of these tensioners in stock

Dan

Does that mean that you have 1 3/4 or 2 1/8 of them?

Ya, I didn't go to college...perhaps I would be a Bentlynutt if a had.

Anyone have a possible replacement part for the bearing, a substitute pully that would bolt on? Mine is screaming and wants to be replaced. I eventually want to go replace the mechanical fan, but that is in the budget later.

The bearing number should be on the bearing. Check with your local parts store for that number. They usually press out and in.

This is kind of scary that such a crucial part is virtually unobtainable. Anybody know if there is any preventative maintenance that can be done on these to try to make them last longer? Like lubing the bearings.

Bearings are sealed, and can be replaced. The spring is what breaks. If anyone can figure out what other tensioner has the same spring, it might be able to replace the spring.

I just picked a good one. I would like $65 shipped for it (CONUS).

That was gone quickly.

the bearing part number on mine is an NTN 6203LN.

https://bearingfinder.ntnamericas.com/item/all-categories/single-row-radial-ball-bearings/6203lh

I have a local shop sourcing and they are going to press it in. Will update on how it goes.
I am not ready yet to switch to all electric.

Had the same issue with my HD tensioner. Bearing dead and pulley dry and cracked. Luckily the spring was ok, so had a buddy make a new aluminium pulley, pressed in a new bearing and it should be good to go for many years
https://servimg.com/view/20204575/4

Pretty and functional..

I found another tensioner. It has a pulley, but the pulley is damaged. I will take $65 shipped for it.

Fred, I´ll take the tensioner so I have a spare just in case.
Please PM me as Im to new in here to be able to PM you.

I'm getting a squeal under the hood. Belts look not too old. Might be the tensioner. Is there a simple check to identify the source? Who has one for sale in n case?

Thanks

Tom

You can get an "engine stethoscope" and touch non moving parts to determine where the squeal is. If it is a bearing you will be able to hear it. If it is a belt, it will not be as pronounced. You could also squirt some belt dressing on it.

"I'm getting a squeal under the hood."

Try a shooting some ArmorAll at the belt. If it instantly silences, its the belt. However, a new belt will only be quiet for a short time. The only permanent cure is to find one of the scarcer-all-the-time Goodyear (Continental) "Gatorback" segmented rib belts. Be prepared to fight with an SS Impala owner over it.

Hey Fred got anymore of those tensioners?

They were gone 8 months ago.

I figured as much but had to ask

A member of ISSF home built his own tensioner.

Reviving this thread to ask if anyone has tried the Continental 49252 pulley that is available from RockAuto: said to be a replacement for OEM / Interchange Numbers: 10115478, 10115874, 10186118, 10238703, 12552509 -- which is how I found it.

ayilar wrote:

Reviving this thread to ask if anyone has tried the Continental 49252 pulley that is available from RockAuto: said to be a replacement for OEM / Interchange Numbers: 10115478, 10115874, 10186118, 10238703, 12552509 -- which is how I found it.

The part is the tensioner for the alternator not the fan. The bolt holes are substantially different.