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Old 04-03-2025, 05:56 PM   #1
1774btcrew
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Need help identifying this transfer case adapter 14020857 2

I had thought this was an SM465 to NP205 transfer case adapter. I have 2 NP205s and one doesn't have the adapter but the number isn't coming up a matching anything. I would appreciate some definitive answers. I don't have a sm465 so I plan to sell it and want to make sure it isn't misrepresented.
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Old 04-03-2025, 06:54 PM   #2
1774btcrew
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Re: Need help identifying this transfer case adapter 14020857 2

I have more pictures
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1972 Cheyenne Super Short Bed big block "Blackie"
1977 Crew Cab GMC Short bed with 4BT Intercooled Cummins Diesel and a 4L80e "The Junkyard Dog"
1985 Crew Cab Chevy dually with 5.9 Cummins "The Big Dog" This is what my dad liked to be called by the grandkids before he passed so it seems fitting for his old truck.
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Old 04-04-2025, 02:39 PM   #3
MJN
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Re: Need help identifying this transfer case adapter 14020857 2

SM465/NP208 adapter
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Old 04-04-2025, 03:27 PM   #4
1774btcrew
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Re: Need help identifying this transfer case adapter 14020857 2

Quote:
Originally Posted by MJN View Post
SM465/NP208 adapter
Thank you! I found one like it but it has a different part number. Is mine apart number that was superseded?
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1972 Cheyenne Super Short Bed big block "Blackie"
1977 Crew Cab GMC Short bed with 4BT Intercooled Cummins Diesel and a 4L80e "The Junkyard Dog"
1985 Crew Cab Chevy dually with 5.9 Cummins "The Big Dog" This is what my dad liked to be called by the grandkids before he passed so it seems fitting for his old truck.
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Old 04-04-2025, 03:34 PM   #5
MJN
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Re: Need help identifying this transfer case adapter 14020857 2

Yes, looks like it was replaced with 15598986
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'56 Chevy 3600 NAPCO
'74 Chevy Cheyenne Super K20-restored on 37's
'72 GMC Sierra Custom K2500- in progress
'08 GMC Envoy Denali
'12 GMC Sierra 2500HD Denali
'17 GMC Yukon XL
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Old 04-09-2025, 10:03 AM   #6
zach_carver
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Re: Need help identifying this transfer case adapter 14020857 2

According to my parts catalog it fits-1981-84 SUBURBAN K10 AND K20- M20 4 SPEED MUNCIE. For service use the part#15598986.
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