NEW GENUINE Chevrolet Silverado (2023-2025) 2500 3500 6.6L V8 Head Gasket 12636478

Genuine GM HSV Cylinder Head Gasket – Chevrolet Silverado 6.6L V8 (2023–2025)

Brand new genuine GM/HSV cylinder head gasket. Designed and manufactured to GM’s OEM standards for durability, sealing performance, and proper engine fitment.

GM Part Number: 12636478

Part Details:

• GM Description: Gasket, Cylinder Head (Grade "A" – used for both LH and RH sides)

• Fitment: Chevrolet Silverado 2500 & 3500 (2023–2025) – 6.6L V8 engines

• Sold Individually (LH and RH gaskets are identical)

This is a genuine GM OEM part, supplied brand new in original packaging.