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Cadillac CTS 2018 Crankshaft Harmonic Balancer Pulley Used 126576381 / 14

2018 Cadillac CTS Crankshaft Harmonic Balancer Pulley Used OEM 12657638 Genuine Cadillac OEM Crankshaft Harmonic Balancer Pulley (part number 12657638).…

Product description

2018 Cadillac CTS Crankshaft Harmonic Balancer Pulley Used OEM 12657638

Genuine Cadillac OEM Crankshaft Harmonic Balancer Pulley (part number 12657638). This component mounts to the end of the crankshaft and is designed to help reduce torsional vibration produced by the engine, which prevents wear and damage. It also acts as the primary pulley to drive the serpentine belt for accessories like the alternator and A/C compressor. This specific part number is designed for the 2.0L 4-Cylinder Turbocharged engine. It has been superseded by part number 25202078.

Details:

  • VIN: 1G6A85SX2K0104094

  • Part Number: 12657638 (Superseded by OE number 25202078).

  • Compatibility: Fits 2018 Cadillac CTS.

  • Function: Reduces engine torsional vibration (harmonic balancing) and serves as the accessory drive belt pulley.

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

At SalvageAutoPart, we’re proud to be one of the largest OEM auto parts sellers worldwide. Every part we offer is carefully pulled, inspected, and tested to ensure quality and reliability before being listed.

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Buy with confidence knowing you’re getting authentic OEM parts backed by a trusted seller.

Always buy OEM!
OEM parts are built to factory specifications, ensuring the right fit, performance, and safety compared to aftermarket alternatives. We sell parts pulled from the vehicles. They are 100% compatible with original part numbers incase if you are looking to substitute part, please check with your car's part number and catalog.

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

Vehicle compatibility

Verified fitment — high-confidence structured evidence

Compatibility table8 vehicles

YearMakeModelTrimEngine
2018CadillacCTSBase Sedan 4-Door2.0L 1998CC 122Cu. In. l4 GAS DOHC Turbocharged
2018CadillacCTSLuxury Sedan 4-Door2.0L 1998CC 122Cu. In. l4 GAS DOHC Turbocharged
2018CadillacCTSLuxury Sedan 4-Door3.6L 222Cu. In. V6 GAS DOHC Naturally Aspirated
2018CadillacCTSPremium Luxury Sedan 4-Door3.6L 222Cu. In. V6 GAS DOHC Naturally Aspirated
2018CadillacCTSPremium Sedan 4-Door3.6L 222Cu. In. V6 GAS DOHC Naturally Aspirated
2018CadillacCTSV Sedan 4-Door6.2L 6162CC 376Cu. In. V8 GAS OHV Supercharged
2018CadillacCTSVsport Premium Luxury Sedan 4-Door3.6L 3564CC 217Cu. In. V6 GAS DOHC Turbocharged
2018CadillacCTSVsport Sedan 4-Door3.6L 3564CC 217Cu. In. V6 GAS DOHC Turbocharged

Compatibility is expanded from the OE number’s donor vehicle to the matching MVL chassis generation (all listed trims/engines/years). When in doubt, match the OE number against your vehicle’s parts catalog or ask our team.

Technical details

Category
Engine
Brand
Cadillac
Manufacturer part number
12657638
Condition
Used
Part source
OEM
Brand type
Cadillac
Country of origin
United States

Photos show the actual item where provided by the seller. Report inaccurate listings to our team.

AED 348.85

Used · SAL

Cadillac CTS 2018 Crankshaft Harmonic Balancer 12657638