Komatsu PC400LC-7L Rear Crankshaft Seal 6251-21-4120

Description

Order Komatsu (rear) from HeavyUsedParts. Part number 6251-21-4120. Rear crankshaft seal for Komatsu PC400LC-7L excavator engine applications.

Product details

Quality and construction

Komatsu part 6251-21-4120 is built for reliable performance in the field. Designed to seal the rear crankshaft area and help prevent engine oil leakage. Our warehouse team inspects each unit before dispatch.

Applications and compatibility

Where this part is used

Suitable for engine repair, rebuild, and routine seal replacement projects. Compatible models include PC400LC-7L.

Specifications

About Komatsu 6251-21-4120 part

Request full specifications for 6251-21-4120 when you contact us. We provide dimensions, weight, and cross-reference numbers where available from the manufacturer.

Ordering from HeavyUsedParts

Shipping and quotes

Get a quote for part 6251-21-4120 with your machine model and serial number. We ship internationally and can advise on lead times for OEM, aftermarket, and used stock.

Verify part number 6251-21-4120 and machine compatibility before ordering.

HeavyUsedParts supplies Komatsu components for construction, mining, and industrial fleets. Every unit is checked against manufacturer specifications before it leaves our warehouse.

Need part number 6251-21-4120? Our specialists can confirm compatibility with your machine serial and model year before you order.

We support mixed fleets with fast sourcing from OEM and aftermarket channels.

Typical applications include PC400LC-7L. Send your model details for a fitment check.

International shipping is available. Request a quote for pricing, lead time, and available condition grades.

Komatsu (rear) is available to order today — contact HeavyUsedParts for pricing and availability.