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(888) 312-8812 Login SignupThe Mack Air Brake Control Valve regulates pneumatic pressure precisely to ensure consistent commercial stopping distances. This exact factory replacement module channels compressed air directly to the wheel chambers the moment the driver applies the pedal. Delivering that accurate air volume through this specific valve prevents dangerous wheel lockup on slick highway surfaces. The robust metallic casting of this Mack 23991108 easily withstands the intense vibration generated by heavy-duty diesel powertrains. Its precision-machined internal ports guarantee an airtight seal to prevent annoying dashboard low-pressure warnings.
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