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Excavator Engine Parts
Plate-style crankshaft rear oil seal identified by Mitsubishi part number ME240010 for 4D34, 6D34 and 6D34T diesel-engine applications. Exact-number records also list selected 4D31/4D31T applications and Kobelco SK200/SK210/SK235/SK250 excavator families. Published dimensions differ by catalog and engine version, so confirm the complete engine suffix, seal plate diameter, bolt pattern, lip profile and crankshaft surface.
Fitment status: Verified · Checked 2026-07-28Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Manufacturer Part Number | Mitsubishi crankshaft rear oil seal | ME240010 |
| Catalog Substitution - Verify Dimensions | Listed as a substitution in parts records; confirm plate, lip and diameter before use | ME011867 |
| Seal Manufacturer Reference | Musashi seal reference; confirm engine version | F4257 |
| Seal Manufacturer Reference | NOK-style seal reference; confirm dimensions | BZ4603E |
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Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
4 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include Engine family: Mitsubishi 4D34 / 6D34 / 6D34T, Recorded engine family: Mitsubishi 4D31 / 4D31T, Recorded excavator family: Kobelco SK200 / SK210 / SK235 / SK250, Fitment limitation: Confirm engine suffix, plate diameter, bolt pattern, lip profile and crankshaft sealing surface. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: F4257, BZ4603E.
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
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