Excavator Filters
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33645 is a 10-micron full-flow fuel/water separator with a water drain, 313 mm height, 120.3 mm outside diameter and 1 1/4-12 thread. The official filter catalog lists Cummins QSK-series engines, Hitachi EX1200-5D, EX2500, EX2500-5 and EX3500-series excavators, plus selected Komatsu mining and construction equipment. Confirm the complete filter number, thread, seal, drain and machine serial range before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Filter Number | Official catalog identity | 33645 |
| Catalog OE Cross-Reference | Cummins | 3089916 |
| Catalog OE Cross-Reference | Cummins | 4095189 |
| Catalog OE Cross-Reference | Hitachi | 4202934 |
| Catalog OE Cross-Reference | Hitachi | 4446815 |
| Catalog OE Cross-Reference | Komatsu | 600-311-3111 |
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 Excavator models: Hitachi EX1200-5D / EX2500 / EX2500-5 / EX3500 series, Engine families: Cummins QSK23 / QSK45 / QSK60 / QSK78 and KT38 / KTA50 families, Additional catalog coverage: Selected Komatsu mining trucks, crawler excavators and wheel loaders, Fitment limitation: Confirm OE number, thread, drain and machine serial range. Confirm the complete part number and machine serial range before ordering.
No alternate number is listed for 33645. Send the original nameplate for an alternate-number check.
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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