Helpful Accessory Drive Conversion GM Part Numbers for OEM Parts
Helpful C5 Accessory Drive Conversion GM Part Numbers for OEM Parts Courtesy of Dave_62 here is a list of parts used for the OEM C5 accessory drive.
Alternator (1)10246634 (production) 10316182 (service)
Alternator to bracket bolts (2) 24503609
Alt bracket to head bolts (3) 11516357
Alt bracket to head bolt (1) 11516356
P/S fluid reservoir bracket (1) 12555222
P/S fluid reservoir (1) 26046502
P/S reservoir hose (1) 26046910
P/S reservoir cap (1) 26022453
P/S pump (1) 26046503
P/S pump pulley (1) 12559890
P/S pump brace (1) 12555693 Same as f-body
P/S pump bolts (2) 14078896 Same as f-body
P/S pump bolts (2) 11515758 Same as f-body
Belt idler pulley (1) 12564401 Same as f-body
Harmonic balancer (1) 12560115
Belt tensioner assembly (1) 12559325
A/C belt tensioner assembly (1) 12560345 Same as f-body
A/C belt idler pulley (1) 12557334
A/C compressor bracket (1) 12556444
A/C compressor (1) 1137031
A/C bracket stud (1) 12556447
A/C bracket bolt (1) 11515768
A/C compressor bolt (1) 11516714
A/C compressor bolt (1) 12552922
A/C compressor bolt (1) 11509202
A/C compressor nut (1) 10255857
Alternator (1)10246634 (production) 10316182 (service)
Alternator to bracket bolts (2) 24503609
Alt bracket to head bolts (3) 11516357
Alt bracket to head bolt (1) 11516356
P/S fluid reservoir bracket (1) 12555222
P/S fluid reservoir (1) 26046502
P/S reservoir hose (1) 26046910
P/S reservoir cap (1) 26022453
P/S pump (1) 26046503
P/S pump pulley (1) 12559890
P/S pump brace (1) 12555693 Same as f-body
P/S pump bolts (2) 14078896 Same as f-body
P/S pump bolts (2) 11515758 Same as f-body
Belt idler pulley (1) 12564401 Same as f-body
Harmonic balancer (1) 12560115
Belt tensioner assembly (1) 12559325
A/C belt tensioner assembly (1) 12560345 Same as f-body
A/C belt idler pulley (1) 12557334
A/C compressor bracket (1) 12556444
A/C compressor (1) 1137031
A/C bracket stud (1) 12556447
A/C bracket bolt (1) 11515768
A/C compressor bolt (1) 11516714
A/C compressor bolt (1) 12552922
A/C compressor bolt (1) 11509202
A/C compressor nut (1) 10255857
Last edited by John B; Jan 23, 2005 at 07:01 PM.
TECH Resident
Joined: Dec 2004
Posts: 841
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From: Baltimore, MD.
You guys are awesome. I just started looking for that information, and was trying to figure out where to go to find it. AND BAM! There it is, without even having to ask for it.
I'll say it again, YOU GUYS ARE AWESOME!!!
'Dreamin'
I'll say it again, YOU GUYS ARE AWESOME!!!
'Dreamin'
TECH Resident
Joined: Dec 2004
Posts: 841
Likes: 0
From: Baltimore, MD.
Ok, I do have some questions:
1.) I think from the pictures I've seen, there is an Alternator and PS pump bracket (big alum casting). Did I miss it in the listing? If its not there, do you guys have a part number for it?
2.) 14th line item is: Belt idler pulley (1) 12564401 Same as f-body. GM parts direct lists that as a water pump pulley. Is that correct? Is it really the water pump pulley? Is it shared with the f-body?
Alright, thats my two questions. Thanks guys.
'Dreamin'
1.) I think from the pictures I've seen, there is an Alternator and PS pump bracket (big alum casting). Did I miss it in the listing? If its not there, do you guys have a part number for it?
2.) 14th line item is: Belt idler pulley (1) 12564401 Same as f-body. GM parts direct lists that as a water pump pulley. Is that correct? Is it really the water pump pulley? Is it shared with the f-body?
Alright, thats my two questions. Thanks guys.
'Dreamin'
Sorry for the delay in replying. The alt/ps pump bracket itself is 12555220. (Or was three months ago. GM is way bad about changing numbers) The 12564401 is the non spring loaded idler wheel below the p/s pump. It is the same part number for both Camaro and Corvette. I unbolted it off the Camaro bracket and put it on the Corvette bracket no problem. The water pump and pulley is the same on the Camaro and Corvette also. The pulley looks different on some years, but the functionality is the same. The LS2 water pump (89017457) has a radically different looking pulley, but is supposed to be a bolt on replacement for the LS1/6 motors as well. It will provide about 2 inches more space between the pulley and the radiator. BTW,even though GM changes the part numbers frequently, if you take an old number in, the parts guy can use it to cross reference to the new number.
Last edited by Dave_62; Feb 20, 2005 at 04:38 PM.
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Joined: Oct 2004
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From: Simi VAlley,CA
Just a word of wisdom here....that LS-2 water pump does allow lots more room but if you are using it with the GM brackets you may have to do what I did.....use a puller and move the pulley forward on the shaft about 3/8" and then tack weld it. With my stock 1998 F body setup the belt wanted to fall off the front of the LS-2 pulley until I made that little modification. In all other respects it's a direct bolt-on.
TECH Resident
Joined: Dec 2004
Posts: 841
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From: Baltimore, MD.
Originally Posted by memery
Has anyone put together a list of the part numbers for the C6 LS2 accessories?
I'd love to see a complete LS2 C6 accessory drive parts list. And / or an LS2 GTO list. Or a list for the Caddy LS6 in the CTS-V (and info about its oil-pan too.) How about the SSR (is it the same as the truck stuff)? The list gets longer the more I think about it, I'd better stop now.
'Dreamin'
1.) alternator and ps pump bracket part # 12578068, I couldn't find it anywhere so I called a local dealer 
Originally Posted by JustDreamin
Ok, I do have some questions:
1.) I think from the pictures I've seen, there is an Alternator and PS pump bracket (big alum casting). Did I miss it in the listing? If its not there, do you guys have a part number for it?
2.) 14th line item is: Belt idler pulley (1) 12564401 Same as f-body. GM parts direct lists that as a water pump pulley. Is that correct? Is it really the water pump pulley? Is it shared with the f-body?
Alright, thats my two questions. Thanks guys.
'Dreamin'
1.) I think from the pictures I've seen, there is an Alternator and PS pump bracket (big alum casting). Did I miss it in the listing? If its not there, do you guys have a part number for it?
2.) 14th line item is: Belt idler pulley (1) 12564401 Same as f-body. GM parts direct lists that as a water pump pulley. Is that correct? Is it really the water pump pulley? Is it shared with the f-body?
Alright, thats my two questions. Thanks guys.
'Dreamin'
Some F-body stuff.
I went down to my local GM dealer and "commondeered" their computer. Here's what I found...these are all F-body applications.
Alternator:
Rear bracket P/N 12556915
Front bracket P/N 12563327
Power steering:
Main bracket P/N 12561584
Front brace P/N 12555693
These part numbers are right from GM's computers and they also list all the idlers/tensioners as well as the mounting hardware (which I'll get later)
Hopefully these can help others out.
I went down to my local GM dealer and "commondeered" their computer. Here's what I found...these are all F-body applications.
Alternator:
Rear bracket P/N 12556915
Front bracket P/N 12563327
Power steering:
Main bracket P/N 12561584
Front brace P/N 12555693
These part numbers are right from GM's computers and they also list all the idlers/tensioners as well as the mounting hardware (which I'll get later)
Hopefully these can help others out.
CTS-V engine accessory drive
Power steering system
bracket 12578551
bolt,pump to bracket 11518075
pulley,ps pump 12578552
bolt,bracket to head 11518633
hose,ps-fluid rsrvr to pump 25768914
hose,ps-fluid rsrvr to cooler 15145898
hose,ps pump to rack and pinion 89060184
hose,ps cooler to rack and pinion 15145899
cooler for ps fluid 25767911
Alternator system
bolt qty(2) 11518637
bracket 12578550
bolt 11518630
alternator 25750935
Belt/tensioner system
tensioner 12569301
bolt 11515768
belt/ac compressor 12585551
pulley,belt idler 12568996
belt,fan/wp/alt/ps 12578553
Air conditioning
bracket 12578548
compressor 25752698
bolt,ac compressor to bracket,long 11509202
bolt,ac compressor to bracket,short 11518627
These were taken out of the may 2006 issue of hot rod for the ls7 swap into a solstice.The cts-v components are supposed to sit closer to the block than c5 parts giving more room on the sides.
Power steering system
bracket 12578551
bolt,pump to bracket 11518075
pulley,ps pump 12578552
bolt,bracket to head 11518633
hose,ps-fluid rsrvr to pump 25768914
hose,ps-fluid rsrvr to cooler 15145898
hose,ps pump to rack and pinion 89060184
hose,ps cooler to rack and pinion 15145899
cooler for ps fluid 25767911
Alternator system
bolt qty(2) 11518637
bracket 12578550
bolt 11518630
alternator 25750935
Belt/tensioner system
tensioner 12569301
bolt 11515768
belt/ac compressor 12585551
pulley,belt idler 12568996
belt,fan/wp/alt/ps 12578553
Air conditioning
bracket 12578548
compressor 25752698
bolt,ac compressor to bracket,long 11509202
bolt,ac compressor to bracket,short 11518627
These were taken out of the may 2006 issue of hot rod for the ls7 swap into a solstice.The cts-v components are supposed to sit closer to the block than c5 parts giving more room on the sides.
On The Tree
Joined: Oct 2005
Posts: 161
Likes: 0
I simplified the front of my LS1/6 in my '88 BMW M3 by using only the Corvette alternator mounting bracket (mounting the alternator on the upper left driver side), Corvette alternator and tight but non-tensioned belt from the crank. I disconnected my power steering and found I don't miss it so I took all of the plumbing off. I run a Meziere remote water pump which works beautifully. This really cleaned up the front of my engine and gave me some more room.
Teching In
Joined: Jun 2006
Posts: 6
Likes: 0
HELP!!!
Man just ran into a wall. 02 Corvette LS1 in 1969 Camaro and the parts above all work great except the p/s pulley will not go on as it is blocked by the edge on the A-arm. Anyone ever had this problem? Any suggestions on another part for a smaller pulley?
Man just ran into a wall. 02 Corvette LS1 in 1969 Camaro and the parts above all work great except the p/s pulley will not go on as it is blocked by the edge on the A-arm. Anyone ever had this problem? Any suggestions on another part for a smaller pulley?
Originally Posted by umedevelopment
HELP!!!
Man just ran into a wall. 02 Corvette LS1 in 1969 Camaro and the parts above all work great except the p/s pulley will not go on as it is blocked by the edge on the A-arm. Anyone ever had this problem? Any suggestions on another part for a smaller pulley?
Man just ran into a wall. 02 Corvette LS1 in 1969 Camaro and the parts above all work great except the p/s pulley will not go on as it is blocked by the edge on the A-arm. Anyone ever had this problem? Any suggestions on another part for a smaller pulley?