Smith & Wesson K Frame Model 66 Main Spring – Used OEM Part
Part Number: 66141B
Caliber: .357 Magnum
Frame: K Frame
Model Compatibility: Model 66
Condition: Used OEM
Style: Old Style
Product Overview
This genuine Smith & Wesson main spring is an original equipment manufacturer (OEM) component designed for the K Frame Model 66 chambered in .357 Magnum. This old-style main spring is a critical part of your revolver's firing mechanism, providing the tension needed for reliable hammer operation.
Compatibility
Designed specifically for Smith & Wesson K Frame Model 66 revolvers in .357 Magnum. Verify part number compatibility with your specific model and generation before ordering.
Installation Notes
Professional installation by a qualified gunsmith is recommended. Some fitting may be required to ensure proper function and safety. Do not attempt installation without proper tools and firearms knowledge.
Condition
This is a used OEM part that has been inspected for functionality. Normal wear consistent with previous use may be present.