2018 Cadillac CTS Vacuum Pump Used OEM 12686657

Genuine Cadillac OEM mechanical vacuum pump (part number 12686657). In modern engines, especially those that are turbocharged or have high-efficiency designs, this auxiliary pump creates the necessary vacuum pressure to operate vacuum-powered accessories, most critically the power brake booster. Failure results in a hard brake pedal and greatly reduced braking assistance, posing a safety risk; replacement restores full power brake function. The VIN for this vehicle is 1G6A85SX2K0104094.

Details:

• VIN: 1G6A85SX2K0104094

• Part Number: 12686657 (OE 12686657)

• Compatibility: Fits Cadillac CTS 2018 (check specific engine type, typically for 2.0L I4 Turbo and certain other engines).

• Function: Mechanically creates vacuum pressure for the power brake booster and other vacuum-operated systems.

• Condition: Used OEM, tested and in good working condition.

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  ⚠️ Fitment Note: Please verify compatibility with your vehicle’s VIN before purchase.