Order of 1 is 1 o-ring.

Durometer Shore: Shore A: 75 Viton
SAE Specification: SAE J200
17 Reviews Hide Reviews Show Reviews
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oil fill riser to valve cover 0-ring
The o-ring fit perfectly and stopped the leak. During the repair I discovered there was NO o-ring there! Someone had used silicone in place of the proper o-ring. 2003 F250 SuperDuty 6.0 PowerStroke. The order process was painless and I would recommend Riffraff Diesel.
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Oil fill o ring
fits and works great
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Oil fill riser to valve cover o-ring
Had the problem of my riser unscrewing from the valve cover when trying to fill oil. This o-ring fits correctly. Pro-tip- use some rtv on the riser threads when you reinstall and you can keep this in place without oil seepage.
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Oil Fill Riser To Valve Cover O-Ring
It’s an o-ring what can I say
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Oil Fill Riser to Valve Cover O-Ring
Perfect fit. Easy install.
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Perfect fit
Just wish shipping for somthing that small could have been less.
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OEM
Riffraff quality replacement
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O ring
Should have done sooner. Works perfectly
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Oil fill seal
Worked perfect on replacing the one that completely dissolved when taking it off.