Seal O-Ring Injector – 3977393

Seal O-Ring Injector 3977393 is cataloged for the Komatsu engine/application references listed on this page. Because related Komatsu models can use different components, confirm the exact part number together with the complete application code rather than relying on the base model alone.

Komatsu Fitment Overview

Catalog data currently associates this product with 2 listed Komatsu engine/application references. Examples include S4D105-5A/B, S6D105-1.

Compatible Engines / Applications

• S4D105-5A/B
• S6D105-1

Product Details

• Item: Seal O-Ring Injector
• Part Number: 3977393
• Brand / Application Reference: Komatsu
• Catalog Specification: As stated in the product name
• Listed Applications: 2

Service and Replacement Notes

Cylinder-repair parts should be selected from exact catalog data rather than appearance. Pay close attention to piston, ring, liner, or sleeve size references and to engine suffixes in the compatibility list. These details can distinguish otherwise similar components.

Before Ordering

The most reliable fitment check is an exact part-number match combined with matching application data. Confirm 3977393 against the original component, parts manual, or service record before purchase.