LS Truck Intake Manifold Rear Brake Booster Vacuum Port 4.8L 5.3L 6.0L LQ4. LS Truck Intake Manifold Brake Booster Vacuum Port to 1/2" Hose Barb. Manufacturer Part Number: 551927-BARB. Fit For all plastic LS truck intake manifolds with push lock rear brake booster port.
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