Primary Part Number
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1st Gear
Joined: Sep 2022
Posts: 5
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From: Mississippi
Primary Part Number
I have 2016 Ultra Limited and decided to do Screaming Eagle compensator upgrade. Removed primary cover and it already had upgraded compensator which I think was installed at factory.
Two issues the oil slinger which is part of kit was cast into the cover and PN inside casting does not match part number in parts book. Also several of the HD dealers said it is HD part, but it does not show up as available
Also when I went to use the new gasket to install cover two top holes do not line up.
PN on cover is 25700387 and book shows it to be 25700385. Has anyone ran into this?
Two issues the oil slinger which is part of kit was cast into the cover and PN inside casting does not match part number in parts book. Also several of the HD dealers said it is HD part, but it does not show up as available
Also when I went to use the new gasket to install cover two top holes do not line up.
PN on cover is 25700387 and book shows it to be 25700385. Has anyone ran into this?
Stellar HDF Member
Joined: Jun 2017
Posts: 2,314
Likes: 1,137
From: Oklahoma
First, the casting number on the inside of a part isn't always the HD part number. I bought a used derby cover, and the guy listed it as the "part number" that he got from the casting on the inside of it... it wasn't the actual part number, and it was for use with a standard outer primary cover, which means it was 1/2" too small for my bike's "narrow outer primary"... so there's that.
Your bike, a 2016 Ultra Limited, is showing it has the Narrow Outer Primary Cover, which is part number 25700385 (Chrome).
A 2015 Ultra Limited for instance had the standard Outer Primary Cover, which is part number 60553-07A (Chrome)
You can tell them apart by measuring the derby covers, the "narrow"'s derby cover is about 7-3/4" across and the standard's derby cover is about 7-1/4" across.
Other than the cut for the derby cover though I think they are identical to each other, and the outer primary cover gasket is the same for either one of them.
Does your cover line up with the bolt holes on the primary housing? Maybe its just a wrong gasket?
If the outer primary cover's bolt holes lines up with the primary housing... take the cover with you to get a new gasket... If it doesn't line up you somehow got the wrong outer primary cover.
Your bike, a 2016 Ultra Limited, is showing it has the Narrow Outer Primary Cover, which is part number 25700385 (Chrome).
A 2015 Ultra Limited for instance had the standard Outer Primary Cover, which is part number 60553-07A (Chrome)
You can tell them apart by measuring the derby covers, the "narrow"'s derby cover is about 7-3/4" across and the standard's derby cover is about 7-1/4" across.
Other than the cut for the derby cover though I think they are identical to each other, and the outer primary cover gasket is the same for either one of them.
Does your cover line up with the bolt holes on the primary housing? Maybe its just a wrong gasket?
If the outer primary cover's bolt holes lines up with the primary housing... take the cover with you to get a new gasket... If it doesn't line up you somehow got the wrong outer primary cover.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,075
Likes: 11,096
From: San Diego, CA
Ssitruc covered it....
But to reiterate.... your OEM Comp is the latest greatest offered for Twin Cams... The comp everybody is upgrading to, became OEM in 2014... The 2014+ bikes have the oil deflector molded into the outer primary cover... all others need to glue in the oil deflector..
FYI.... your comp part number is #36500034A. The kit for others to use, to upgrade to your comp, has part #42200064A
But to reiterate.... your OEM Comp is the latest greatest offered for Twin Cams... The comp everybody is upgrading to, became OEM in 2014... The 2014+ bikes have the oil deflector molded into the outer primary cover... all others need to glue in the oil deflector..
FYI.... your comp part number is #36500034A. The kit for others to use, to upgrade to your comp, has part #42200064A
Last edited by hattitude; Sep 14, 2022 at 07:56 PM.
Thread Starter
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1st Gear
Joined: Sep 2022
Posts: 5
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From: Mississippi
Thanks everyone, I will take gasket with me, tomorrow.
This does not explain the 387part number from the 385 in the manual.
You guys have given me more work thanks.
Does anyone know where the manufacture date is on the bike?
This does not explain the 387part number from the 385 in the manual.
You guys have given me more work thanks.
Does anyone know where the manufacture date is on the bike?
Stellar HDF Member
Joined: Jun 2017
Posts: 2,314
Likes: 1,137
From: Oklahoma
I do not know for sure, but it "could be" the stamp on the cover is just a mold stamp, then the actual the part number will depend on the finish (chrome, polished alum, black, etc). For instance, here's a listing using that number, because its stamped with it, but its black... so it's actual HD part number is 25700438, if it is a black narrow outer primary cover.
https://www.ebay.com/itm/323858740123
The only place I see the 25700387 part number being used, besides on the casting, is on eBay and the likes, where guys are just listing it by the casting number. If you buy a 25700385 from HD (chrome), it will have the 25700387 number stamped on the inside of it, but its actually a HD #25700385, if it is chrome. If you buy the black cover, HD #25700438, it too will have the 25700387 stamped on the inside of it.
End of the day, if you put the outer primary cover up against the primary, does the bolt pattern match? If so get the right gasket...
If the cover does not line up with the primary's bolt pattern, then you have the wrong outer primary cover.
But, after reading your post again, you didn't replace the primary housing or the outer primary cover.... so how could it be anything but a wrong gasket???
The numbers stamped on the part is not necessarily a "part number" per se...
Last edited by Ssitruc; Sep 15, 2022 at 09:01 AM.
Thread Starter
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1st Gear
Joined: Sep 2022
Posts: 5
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From: Mississippi
Got compensator replaced sounds much better
Three items to reflect on;
1. Alot of wear in the SE compensator so I will change primary oil quick frequent.
2. Clutch sprocket does not need to be removed, remove chain adjuster and compensator and let primary chain hang till ready to install compensator.
3. Has anyone tried to add extra small (belville washer) spring to stack up to improve compensator?
Thanks in advance
1. Alot of wear in the SE compensator so I will change primary oil quick frequent.
2. Clutch sprocket does not need to be removed, remove chain adjuster and compensator and let primary chain hang till ready to install compensator.
3. Has anyone tried to add extra small (belville washer) spring to stack up to improve compensator?
Thanks in advance
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Seasoned HDF Member
Joined: Sep 2008
Posts: 14,075
Likes: 11,096
From: San Diego, CA
Three items to reflect on;
1. Alot of wear in the SE compensator so I will change primary oil quick frequent.
2. Clutch sprocket does not need to be removed, remove chain adjuster and compensator and let primary chain hang till ready to install compensator.
3. Has anyone tried to add extra small (belville washer) spring to stack up to improve compensator?
Thanks in advance
1. Alot of wear in the SE compensator so I will change primary oil quick frequent.
2. Clutch sprocket does not need to be removed, remove chain adjuster and compensator and let primary chain hang till ready to install compensator.
3. Has anyone tried to add extra small (belville washer) spring to stack up to improve compensator?
Thanks in advance
For your year/model compensators, there is a procedure to measure and add a couple HD shims to increase spring preload....
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Thread Starter
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1st Gear
Joined: Sep 2022
Posts: 5
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From: Mississippi
Thank you very much, took a minute to get Parts Guys ay HD to supply washer, but they finally did agree.
Also couple shops have said to use old smallest spring and turn it in same direction, that will take up space also.
Thanks Mike
Also couple shops have said to use old smallest spring and turn it in same direction, that will take up space also.
Thanks Mike
Seasoned HDF Member
Joined: Jan 2007
Posts: 20,616
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From: anacoco, la
this i can confirm. i took my outer primary off of my 2013 and replaced it with the narrow primary cover. i did not need a new gasket, the old one was in great shape.
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