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Old 08-30-2025, 09:29 PM
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ykobayashi ykobayashi is online now
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Join Date: Jun 2005
Location: Irvine, CA
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Ok I bought these. I finally got sick and tired of replacing the buffers after they broke. They never seem to last more than a year. And my engine is pretty smooth too. It wastes so much time changing these things and when the knocking starts under the hood it’s stressful because I don’t know what it is till I get the car home.

So here they are. 4403K84 from McMaster Carr. $38 shipped to my door. Ouch…much more expensive than the Febi, URO, CRP or MTC which don’t last at all. Less expensive than the Mercedes
OEM at $24 each.

Time to try these out. I’ll report back when they break. They appear to be a very nice silicone rubber. At $13 each I hope they last. Even at 3x the price of the shoddy ones they’ll be worth it if they last 3x as long. Because it wastes time to replace them.



Quote:
Originally Posted by Alex E View Post
I agree with the earlier post it's critical to have the air cleaner 'drop' cleanly onto the vibration mount studs so there is no side stress.
At McMaster Carr I found some "Extreme-Temperature Vibration-Damping Sandwich Mounts with Stud, Orange, M6 x 1mm Thread, 90 lbs. Capacity".
The part number is 4403K84.
Specs are;
Capacity per Mount 90 lbs.
Shear Capacity per Mount 30 lbs.
Hardness Durometer 70A
Material Orange Silicone Rubber
Stud Material Zinc-Plated Steel
Temperature Range -80° to 300° F
Country of Origin United States
$6.46 Each!!!

These are the Cats Ass!
Year and a half no problem, just make sure the air cleaner drops cleanly onto the studs.
URO, please take note and strive for this American quality.
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