Genuine Ford 17-20 F-150 Brake Booster Vacuum Check Valve HL3Z-9Y432-A - Ford (HL3Z-9Y432-A)
2017-2022 Ford - hl3z9y432a
Genuine Ford 17-20 F-150 Brake Booster Vacuum Check Valve HL3Z-9Y432-A - Ford (HL3Z-9Y432-A)
2017-2022 Ford - hl3z9y432a
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Details
- Brand:
- SKU:
HL3Z-9Y432-A
- Other Names:
Booster Check Valve, Elbow, Brake Vacuum Hose Connector, Vacuum Valve
- Description:
This Genuine Ford check valve is the power brake booster vacuum check valve used in the brake booster vacuum supply line on 2017-2020 F-150 trucks. Ford catalogs it as a Valve Check for the Booster Vacuum Brake circuit, and it is a one-way valve that holds vacuum in the brake booster when engine vacuum drops, such as at wide-open throttle or when the engine is switched off. By trapping vacuum on the booster side, the valve preserves power-assisted braking for several pedal applications and prevents backflow toward the engine. A failed check valve can cause a hard or high brake pedal, loss of power assist, a hissing sound at the booster, or a booster that cannot hold vacuum between stops. Replacement is straightforward once the vacuum hose is disconnected, and using the correct Ford valve ensures proper flow orientation and a leak-free seal so the booster retains vacuum as designed. Confirm the fitting size and hose routing against your original valve before installation to ensure the check valve is oriented correctly.
- Notes: Included with power booster.
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