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TransGo Vacuum Bypass Kit. The bypass valve exhausts the boost pressure going to the modulator so the internal diaphragm does not get ruptured under engine boosted driving conditions. This vacuum bypass kit quickly and easily T’s into the brake booster vacuum line or directly into the intake manifold.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.