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Bubble or SAE flair 1800 1971

Hello,

The original Volvo part number for the o-ring is 680906.

We have the Volvo version in stock for $7.75 or we can get an economy version for $3.00, but we don't have them in stock.

The brake master is held on with only 2 nuts, so I would suggest that you take the time to move the brake master away from the booster and see if there is an ~2" diameter o-ring on the back of the brake master or they sometimes are stuck to the brake booster.

FYI, if the o-ring were missing or damaged, there should be a significant vacuum leak that should affect the idle.
--
Eric
Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
Torrance, CA 90502
hiperformanceautoservice.com or oldvolvosonly.com






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