NP 203 Transfer case Chain HV009 GM#13433

[Jim 78K5]

If you have one please e-mail me [email protected]

 

[90Supurban]

Also interested in a replacement chain, as I have a rebuild planned in the near future. However, when I was looking for parts, the only ones I found were overpriced takeouts.

 

[ali_c20]

There are different chains:

1973 - 1978: 3/8 pitch x 2-1/2" x 98 pitch length
1978 - 1979: 1/2 pitch x 2" x 72 pitch length

2 1/2" chain
Motive Gear 11428
Morse HV-005
Cloyes 10-005c

2" chain
Motive Gear 13433
Morse HV-009
Cloyes 10-009c

HV-009:
https://nationalhdtruckparts.com/partinfo.php?id=10-009C

HV-005 (backordered):
https://nationalhdtruckparts.com/partinfo.php?id=HV005

HV-005 chain made in the US in 2" or 2.5" wide but (expensive, $429):
https://bjsoffroad.com/np-203-transfer-case-chain-only-made-in-usa-hv-005/?srsltid=AfmBOorI1mtSh1Ar75l6e9yhKCrkxW_PfbbCeQAEFLyfDYobR4B1Ax6P

 

[75gmck25]

Milemarker used to also sell a chainsaver kit, which was used to take the slack out of a stretched chain. However, I don’t know exactly how it worked, and it’s disappeared from all the parts catalogs online.

 

[Turbo4whl]

Milemarker used to also sell a chainsaver kit, which was used to take the slack out of a stretched chain. However, I don’t know exactly how it worked, and it’s disappeared from all the parts catalogs online.

Yes, no longer available as far as I know. It was a spring loaded rubbing block.

 

[Fat 454]

Milemarker used to also sell a chainsaver kit, which was used to take the slack out of a stretched chain. However, I don’t know exactly how it worked, and it’s disappeared from all the parts catalogs online.

Does Milemarker still exist as a company ? They used to sell a shaft replacement conversion for the NP203 transfer case to change from full to part time ( later sold to Doug Nash, or vice versa ). I have not been able to find them for a few years now - anyone got any other info ? ...

 

[ali_c20]

Does Milemarker still exist as a company ? They used to sell a shaft replacement conversion for the NP203 transfer case to change from full to part time ( later sold to Doug Nash, or vice versa ). I have not been able to find them for a few years now - anyone got any other info ? ...

Milemarker still exists but the NP203 shaft conversion and many other parts are out of production.

https://www.milemarker.com/?srsltid=AfmBOorS7n5l9gx32yHJ4Vgreznio4EVPfB4-l3JBrXc7tF7TRrm9eoo

 

[mmerlinn]

If you have one please e-mail me [email protected]

Good used usable HV-009 chains will cost $400 and up. HV-005 chains around $250/$300.

 

[Old Guy Bill]

Use an NP208...

 

[Camar068]

Use an NP208...

I like that price for what I do with my truck.

 

[Strick]

NP205.

 

[Goldie Driver]

NP205.

What I have, but it is disappointing that low is not at least a 2:1 ratio. The 203 was slightly lower than a 2:1 - 2.03 ? 2.3 ?

 

[Turbo4whl]

I had 3 sites saved that had 203 parts. None of them sell the chains now.

 

[Strick]

I've had several 203's thru the years & do appreciate the lower range over the 205. We just swapped the trans/case in my 76 with a used unit from a 75. It is difficult to shift & must have front hubs locked to drive. It makes noise in park/neutral like trying to run a PTO.
Being the 76 case is good & 75 tranny is good I believe that I'll swap that back over because that case actually shifted smooth & was quiet. If I had a driveshaft for 205 then I'd swap it definitely.

HS

 

[Old Guy Bill]

I went through all of this when I started the rebuild of my truck almost two years ago.
There aren't any 203 chains in stock anywhere, and any of the companies that can manufacture the chain aren't going to, as there is no demand for them.
The NP208 will require driveshaft changes, but it's a much better option in the long run in my opinion.