Smith & Wesson K Frame Model 66 Cylinder Yoke Assembly .357 Magnum (66-4, 66-5, 66-6, 66-7, 66-8) Used Part# 66AA

This is a used OEM Smith & Wesson cylinder yoke assembly for the K Frame Model 66 Combat Magnum revolver chambered in .357 Magnum. This part fits the Model 66-4, 66-5, 66-6, 66-7, and 66-8 dash variants, which use the newer style (flat-sided star) extractor introduced with the 66-4 engineering change.

⚠️ Compatibility Warning: This cylinder yoke is NOT compatible with the original Model 66, 66-1, 66-2, or 66-3, which use the older style extractor with legacy alignment pins. The two extractor designs are not interchangeable. Please verify your dash number before ordering.

• Part Number: 66AA
• Fits: S&W K Frame Model 66-4, 66-5, 66-6, 66-7, 66-8
• Caliber: .357 Magnum
• Frame Size: K Frame
• Extractor Style: Newer style (flat-sided star extractor, post-1994)
• Cylinder Type: Non-recessed
• Condition: Used OEM factory part — inspected and functional

All used parts are inspected prior to listing. Photos show actual condition. If you have questions about fit or compatibility, please contact us before purchasing.