4N4391 Woodruff Key for Caterpillar Equipment

The 4N4391 Woodruff Key is used in Caterpillar gas engines, generator set engines, industrial engines, marine engines, petroleum engines, petroleum packages, petroleum transmissions, tractors, and trucks. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

The key is listed for the following Caterpillar equipment and engine applications:

• Gas engines: G3304, G343.
• Generator set engines: 3304, 3306, 3306B, 3406B, 3406C, 3408.
• Generator sets: 3306B, 3406C, 3408C, 3456, C18, C9.
• Industrial engines: 3176B, 3176C, 3196, 3304, 3306, 3306B, 3406, 3406B, 3406C, 3406E, 3408, 3408C, 3408E, 3456, C-10, C-12, C-15, C-16, C-9, C11, C13, C15, C18, C7, C9, D320A, D342C.
• Marine engines: 3176B, 3176C, 3196, 3304, 3304B, 3306, 3306B, 3406, 3406B, 3406C, 3406E, 3408, 3408C, C-12, C12, C15, C18, C9, D342, D353C.
• Petroleum engines: C15, C18, C9.
• Petroleum packages: CX31-C13I, CX31-C15I, CX31-C18I, CX31-C9I, CX35-C18I, CX35-P800, TH35-C11I, TH35-C13I, TH35-C15I.
• Petroleum transmissions: TH31-E61.
• Tractors: 768B.
• Trucks: 769.

Specifications