Komatsu Engine O-Ring 6240-21-6450

Komatsu Engine O-Ring 6240-21-6450 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 6240-21-6450 is listed as O-Ring. Search also by the no-dash alternate number 6240216450.

Engine book references

This part appears in Komatsu engine parts book paths such as:

• ENGINES / SA6D170E-3A-7 S/N 310001-UP / ENGINE / CAMFOLLOWER COVER AND BREATHER (FOR D375A-5)(#310043-310088) (A2060-A6B8Z)
• ENGINES / SA6D170E-3A-7 S/N 310001-UP / ENGINE / CAMFOLLOWER COVER AND BREATHER (FOR D375A-5)(#310089-) (A2060-A6C4)
• ENGINES / SA6D170E-3A-7 S/N 310001-UP / ENGINE / CAMFOLLOWER COVER AND BREATHER (FOR D375A-5)(#311285-) (A2060-A6C7)
• ENGINES / SA6D170E-3A-7 S/N 310001-UP / ENGINE / CYLINDER BLOCK GASKET KIT(#300043-) (A8110-B6A7)
• ENGINES / SA6D170E-3A-7 S/N 310001-UP / ENGINE / CYLINDER BLOCK GASKET KIT(#310043-) (A8120-A6A3)
• ENGINES / SA6D170E-3A-7 S/N 310043-UP / ENGINE / CAM FOLLOWER COVER AND BREATHER (WITH VEHICLE HEALTH MONITOR SYSTEM)(#311285-) (A2060-A6C7)

This part appears in 9 Komatsu engine book paths in our reference data.

Verification note

Always confirm final fitment by engine model, serial range, diagram callout, and part number before ordering. Hub references are provided to help buyers find the right engine section and related parts faster.

Keep Ops Moving

19PARTS organizes Komatsu engine parts around searchable engine-model hubs so rebuild shops, equipment owners, and fleet teams can identify parts and keep repairs moving.