4S8909 Valve Insert for Caterpillar

4S8909 is an intake valve insert with a 0.010-inch oversize specification for Caterpillar engines and engine-generator set or industrial engine applications. The compatible Caterpillar equipment models identified for this part are D379, D379B, D398, D398B, D399, G379, G379A, G398, and G399.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The part is listed under the Valve Inserts category and is intended for use as an intake insert in the specified Caterpillar engine applications.

Fitment

• Caterpillar D379 engine
• Caterpillar D379B engine
• Caterpillar D398 engine
• Caterpillar D398B engine
• Caterpillar D399 engine
• Caterpillar G379 engine
• Caterpillar G379A engine
• Caterpillar G398 engine
• Caterpillar G399 engine
• Caterpillar engine-generator set applications
• Caterpillar industrial engine applications

The model information above includes the D379B and D398B configurations separately from the D379 and D398 model designations because all four designations are listed for this valve insert. Fitment should be checked against the engine model and the required intake insert size before installation.

Cross-reference numbers

• 4S8909
• 4S-8909

4S8909 and 4S-8909 are number formats associated with the same valve insert identification. The SKU for this product is 4S8909. The cross-reference information identifies the part by both the unhyphenated and hyphenated formats.

Specifications

The dimensional data supplied for SKU 4S8909 is 7.5 cm in length, 4.3 cm in width, and 7.7 cm in depth, with a listed weight of 0.3 lb. These values describe the part as listed and should be compared with the service requirements for the applicable Caterpillar engine before fitting.