Drain plug O-ring size
Thread Starter
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Novice
Joined: Jul 2012
Posts: 16
Likes: 1
From: Unionville, VA
Drain plug O-ring size
Did a lot of searching on quality replacement drain plug O-rings and thought I'd share what I found.
In case it wasn't clear, I'm talking about the drain plugs on engine case, tranny pan and primary case. H-D recommends changing the O-rings every time the plugs are removed. My local dealer wants $.99 each for the O-ring or they sell a "service pac" for $5.99 that includes 3 O-rings and a derby cover O-ring/gasket. I've had trouble with my O-rings tearing and have needed to change them almost every time. Seems ridiculous that they should cost a buck each at the stealer, so I went on a search for the proper size and type. Consensus said they are size 013 soft O-rings. I like ordering from McMaster-Carr (used them for years for industrial fabrication projects) and found the correct o-rings on their site (Soft Buna-N O-Ring AS568A Dash Number 013, packs of 90 for $9.60)
http://api.viglink.com/api/click?for...13481548644262
I used these on my last oil change, torqued the plugs to 20 ft lb and they work perfectly with no leaks. Price wise, they work out to be about $.11 each. So H-D has 900% mark up on these.....
In case it wasn't clear, I'm talking about the drain plugs on engine case, tranny pan and primary case. H-D recommends changing the O-rings every time the plugs are removed. My local dealer wants $.99 each for the O-ring or they sell a "service pac" for $5.99 that includes 3 O-rings and a derby cover O-ring/gasket. I've had trouble with my O-rings tearing and have needed to change them almost every time. Seems ridiculous that they should cost a buck each at the stealer, so I went on a search for the proper size and type. Consensus said they are size 013 soft O-rings. I like ordering from McMaster-Carr (used them for years for industrial fabrication projects) and found the correct o-rings on their site (Soft Buna-N O-Ring AS568A Dash Number 013, packs of 90 for $9.60)
http://api.viglink.com/api/click?for...13481548644262
I used these on my last oil change, torqued the plugs to 20 ft lb and they work perfectly with no leaks. Price wise, they work out to be about $.11 each. So H-D has 900% mark up on these.....
Tourer
Joined: Jun 2012
Posts: 323
Likes: 0
From: Mishawaka, IN
Dang. 90 pack? How often do you change your oil?
If you want to sell my like 5 of them let me know.
If you want to sell my like 5 of them let me know.
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Thread Starter
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Novice
Joined: Jul 2012
Posts: 16
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From: Unionville, VA
PM me your address. I'll send ya some no charge...
Or just spend 10 bucks and order a bag. Share some with your friends. Hell keep some on the bike and give'm out to other H-D riders when you meet....
Or just spend 10 bucks and order a bag. Share some with your friends. Hell keep some on the bike and give'm out to other H-D riders when you meet....
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Elite HDF Member
Joined: Nov 2010
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From: Simi Valley, CA
Good info for those who feel compelled to replace the o-rings at every oil change but........... I have two bikes, one with near 80,000 that has had the oil changed at 2,500 miles intervals since new, the other with 33,000 miles and change intervals of 5,000, and I can't remember ever replacing a drain plug o-ring.
To the OP - If you have trouble tearing o-rings and NEED to replace them everytime, you have some other problem, i.e., a machining defect or some other nick/burr in the seat or the plug itself, or you are not properly lubricating the o-ring at installation.
To the OP - If you have trouble tearing o-rings and NEED to replace them everytime, you have some other problem, i.e., a machining defect or some other nick/burr in the seat or the plug itself, or you are not properly lubricating the o-ring at installation.
Thread Starter
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Novice
Joined: Jul 2012
Posts: 16
Likes: 1
From: Unionville, VA
OldTyme, got ur pm and I'll send some ur way.
2black, I hear ya. I'm not sure what I'm doing wrong. All 3 o-rings get buggered up when I torque the plugs. So I don't think it's a machining problem. I also lube them with fresh oil too. They all had thread sealant on them from the factory so I've been adding some on reinstall. I read that could cause my o-ring trouble. Next change, I'll clean all that crap off and trust just the o-rings. See what happens.
2black, I hear ya. I'm not sure what I'm doing wrong. All 3 o-rings get buggered up when I torque the plugs. So I don't think it's a machining problem. I also lube them with fresh oil too. They all had thread sealant on them from the factory so I've been adding some on reinstall. I read that could cause my o-ring trouble. Next change, I'll clean all that crap off and trust just the o-rings. See what happens.