Look on ebay or a slavage yard they were used on a lot of models you should be able to find a pair

Assemblies where 570043600 is used

• 1996 Formula S - Fuel System Formula S
• 1996 Formula SL - Fuel System Formula SL
• 1996 Skandic 380 - Fuel System 377
• 1996 Skandic 500 - Fuel System 500
• 1996 Touring E - Fuel System E, E LT
• 1996 Touring E LT - Fuel System E, E LT
• 1996 Touring LE - Fuel System LE
• 1996 Touring SLE - Fuel System SLE
• 1997 Formula S - Fuel System
• 1997 Formula Sl - Fuel System
• 1997 MX Z 440 F/Z 583/Z 67 - Fuel System (440F)
• 1997 Skandic 380/500 - Fuel System
• 1997 Touring E - Fuel System
• 1997 Touring E LT - Fuel System
• 1997 Touring LE - Fuel System
• 1997 Touring SLE - Fuel System
• 1998 Formula S - Fuel System
• 1998 Formula S Electric - Fuel System
• 1998 Formula Sl - Fuel System
• 1998 MX Z 440 F - Fuel System
• 1998 Skandic 380/500 - Fuel System
• 1998 Touring E - Fuel System
• 1998 Touring LE - Fuel System
• 1998 Touring SLE - Fuel System
• 1999 Formula Deluxe 380/500 - Air Intake System
• 1999 Formula S - Air Intake System
• 1999 Formula Sl - Air Intake System
• 1999 MX Z 440 - Fuel System
• 1999 Skandic 380/500 - Air Intake System
• 1999 Touring E - Air Intake System
• 1999 Touring LE - Air Intake System
• 1999 Touring SLE - Air Intake System
• 2000 Formula Deluxe 380/500 - Air Intake System
• 2000 Formula S - Air Intake System
• 2000 MX Z 440 - Fuel System
• 2000 Skandic 380/500 - Air Intake System
• 2000 Touring E - Air Intake System
• 2000 Touring LE - Air Intake System
• 2000 Touring SLE - Air Intake System
• 2001 Formula Deluxe 380 F - Air Intake System
• 2001 Formula Deluxe 500 F - Air Intake System
• 2001 MX Z 380 F - Air Intake System
• 2001 MX Z 440 F/500 F - Air Intake System
• 2001 Summit 500 F - High Altitude Compensator (h.a.c.)
• 2001 Touring 380 F/500F - Air Intake System

 

are yours cracked or totally garbage??

 

cracked half way around

 

all the way thru??

 

those are for the carb to the motor- I need from the carb to the airbox

 

yes cracked all the way thru

 

there was a thread in the mxz section of guys repairing the rubber,might not be a permanant solution but might get you buy for the time being

 

http://www.dootalk.com/forums/topic/1361106-2001-summit-700-carb-boots/

 

maybe this will help??

 

Maybe try Royal Distributing if in Canada or Dennis Kirk if you in the US maybe they have them?

 

Maybe try Royal Distributing if in Canada or Dennis Kirk if you in the US maybe they have them?

i tried finding them at royal..i couldnt find them.. was my first thought too..lol

 

try emailing or calling Alssnowmobile.com

They don't have it on their website, but often they have it.

check for potential spam.com is another one that you typically have to call or email to ask for the part.

That boot isn't as critical as the other side. I've taken the one off my Tundra and cleaned itup real good (put mine through the dishwasher) and then coated it with silicone. I used the spray stuff that is similar to the Flex-Seal brand. It looks great, still holding together 10+ years later.

 

I'm guessing that they aren't a lot different than the 550 boots , probably worth a look .

 

If you can't find an interchangeable one, I agree these aren't super critical but for keeping snow out of the carbs.

 

Hey All,

Newbie here, thanks for the information on part, I found what I believe is a close match to this one and got it on order. Will let you know how it fits if you still have your sled

https://www.denniskirk.com/boyesen/replacement-boot-kit-rbk-20.p187647.prd/187647.sku

 

Yes, for sure change them out. Snow into the intake will wash the oil off the piston, then you have some work to do.

 

Check post # 15 ( and all thread )

https://www.dootalk.com/forums/topic/1497610-1996-forumla-sl-500/

 

I found a replacement for the unobtanium 570043600 airbox adaptor boots for 34mm Mikuni carbs. The Bombardier / Skidoo part number is 508000203. This alternative is still available new! I got mine for the same or less than what people charge on eBay for dried up old ones.

Note that this is NOT an exact match. However, it is very close. I think it will work for most sleds with airboxes that are supposed to use the 570043600 boots.

The differences:

1. The 508000203 boot is about .25" longer than the 570043600. You can see the difference in a couple of the pictures. Unless your airbox fits very tightly in the engine compartment, I don't think this extra 1/4 inch is likely to cause clearance issues.

2. There is a bump molded into the groove that wraps around the edges of the hole in the airbox. This boot has a slight angle, so I think the bump (notch) is intended to index the boot so it has the right orientation. I was able to remove it with a sharp X-acto blade to ensure a good seal.

I did not have to modify/enlarge the holes in the airbox.

I'm using these on a 1999 Skidoo Formula DLX 380. The airbox on this sled may not be correct. I suspect a previous owner installed one from a 1999 MXZ 440. But it seems to work fine. We have a snow storm headed for Boston this weekend, so I am eager to take the DLX 380 out for a spin.

I hope this works for some of you!

\

 

I found a replacement for the unobtanium 570043600 airbox adaptor boots for 34mm Mikuni carbs. The Bombardier / Skidoo part number is 508000203. This alternative is still available new! I got mine for the same or less than what people charge on eBay for dried up old ones.

Note that this is NOT an exact match. However, it is very close. I think it will work for most sleds with airboxes that are supposed to use the 570043600 boots.

The differences:

1. The 508000203 boot is about .25" longer than the 570043600. You can see the difference in a couple of the pictures. Unless your airbox fits very tightly in the engine compartment, I don't think this extra 1/4 inch is likely to cause clearance issues.

2. There is a bump molded into the groove that wraps around the edges of the hole in the airbox. This boot has a slight angle, so I think the bump (notch) is intended to index the boot so it has the right orientation. I was able to remove it with a sharp X-acto blade to ensure a good seal.

I did not have to modify/enlarge the holes in the airbox.

I'm using these on a 1999 Skidoo Formula DLX 380. The airbox on this sled may not be correct. I suspect a previous owner installed one from a 1999 MXZ 440. But it seems to work fine. We have a snow storm headed for Boston this weekend, so I am eager to take the DLX 380 out for a spin.

I hope this works for some of you!

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Wow Thank you very much!!! Been looking for almost 2 years now! Just ordered a set!

 

Nice job with the pictures and explanation. It's great you took the time to share this.
Good find too.
WELCOME to the forum.

 

Thanks for the warm welcome. Happy to be here.
I've benefited from the information in many of the threads here. I am new to snowmobiles, though. This has been my first opportunity to share something that might be useful to others.

 

You did a fine job.

 

Sixvolt, to me that is AWESOME, thanks for the post. I like to mess with the S chassis FC sleds, in the past I used plan "B" for them boots. Your findings are perfect.
What sled are the boots you used for ??

 

Glad to help! It's frustrating when a manufacturer ceases production of a part for an old machine. Bombardier must have killed this boot a while ago since no-one seems to even have NOS available.

This boot is not the official part for my DLX 380. However, Partzilla does a pretty good job of listing the models that do use this part: 508000203 at Partzilla

Seems to be mainly sleds with the 380 or 550 fan motor from 2002 to 2004.

 

I took particular interest in this tread because we have a 1996 and a 1998 Formula S sitting in my barn. These are the grandchildren's sleds.

 

Let us know whether they work for you, and what snowmobile you used them on.

 

Just fired up my ‘95 ski-doo skandic 500 after 7 years of sitting. 4th pull. 3000 miles. Replaced the gas and have moved onto the seals and gaskets. Gas lines are still supple, so if it’s not broke I’m not going to try to fix it. Hopefully I can get the little gunk there is out of the bottom, but everything looks to be in great shape, minus the seat.