Product Description
Genuine GM 12680364 Crankshaft Harmonic Balancer Pulley
Fits 2019–Newer L84, L87, L8T, and L82 5.3L, 6.2L, 6.6L Truck/SUV Engines
Will not fit L83 L86 LT1 etc Engines. 8th Digit of VIN Must be D, L, F, or 7
The Genuine GM 12680364 Crankshaft Harmonic Balancer Pulley is the OEM-quality replacement designed for 2019 and newer GM trucks and SUVs equipped with the L84, L87, L8T, or L82 engines. Built to the exact factory specifications, this balancer ensures proper engine operation by reducing torsional vibration and maintaining optimal crankshaft stability.
GM Original Equipment harmonic balancers are engineered to absorb engine vibrations and maintain accessory belt alignment, preventing premature wear on critical components. Manufactured using high-grade materials and advanced balancing technology, this replacement pulley offers exceptional durability and reliability, restoring smooth engine performance and factory-level precision.
Ideal for both stock and mildly modified builds, this GM harmonic balancer delivers the same fit, form, and function as the original component, ensuring long-lasting performance and peace of mind.
Key Features:
- Genuine GM OEM part – part number 12680364
- Direct replacement for L84, L87, L8T, and L82 engines (5.3L, 6.2L, 6.6L)
- Reduces torsional crankshaft vibrations for smoother performance
- Serves as an accessory drive pulley for engine belts
- Precision balanced for factory-level durability and fitment
- Manufactured to meet GM’s strict engineering standards
- Restores OEM performance, longevity, and reliability
Applications Include (8th Digit of VIN = D, L, F, or 7):
- CADILLAC ESCALADE 2021–2025
- CHEVROLET EXPRESS 2500 / 3500 2019–2025 • EXPRESS 4500 2021–2024
- CHEVROLET LCF 2020–2024
- CHEVROLET SILVERADO 1500 2019–2025 • 2500 / 3500 2020–2025
- CHEVROLET SUBURBAN 2021–2025 • TAHOE 2021–2025
- GMC SAVANA 2500 / 3500 2019–2025 • SAVANA 4500 2021–2024
- GMC SIERRA 1500 2019–2025 • 2500 / 3500 2020–2025
- GMC YUKON 2021–2025 • YUKON XL 2021–2025
