LS Truck Intake Manifold Rear Brake Booster Vacuum Port 4.8L 5.3L 6.0L LQ4

Intake Manifold Rear Brake Booster Vacuum Port for LS Truck

This intake manifold rear brake booster vacuum port for LS Truck provides a secure vacuum connection from the intake manifold to the power brake booster.

Overview

This intake manifold rear brake booster vacuum port is a replacement fitting designed to restore the vacuum source at the back of the intake manifold. Over time, the factory plastic port can become brittle, crack, and cause vacuum leaks that degrade braking performance. This intake manifold rear brake booster vacuum port is designed for engine builders and vehicle owners servicing LS truck engines.

Built For Performance

• Constructed from durable polymer to withstand engine bay heat cycles.
• Maintains a tight, leak-free seal to preserve booster vacuum pressure.
• Direct push-in fitment allows for straightforward installation on the rear intake manifold.
• Designed to handle the high vacuum demands of power braking systems.

Fits These Machines

• for LS Truck 4.8L Engine
• for LS Truck 5.3L Engine
• for LS Truck 6.0L Engine LQ4

On-The-Job Use

• Fixing a vacuum leak at the back of the intake manifold during engine swaps.
• Restoring consistent power brake assist by sealing the vacuum line connection.
• Replacing brittle or broken plastic vacuum fittings during an intake manifold service.

Specs At A Glance

Good To Know

Q: What are the symptoms of a leaking rear brake booster vacuum port? A: A leak can cause a rough engine idle, lean running codes, and a stiff brake pedal due to loss of vacuum assist.

Q: Does this port require any adhesive or sealant for installation? A: No, this port is designed to seal with its built-in locking tabs or O-ring seal, pressing directly into the rear of the intake manifold.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.