Excavator Filter Kits by OEM Cross-Reference (Oil, Fuel, Hydraulic, Air)

Cross-Check Oil, Fuel, Hydraulic and Air Filters for CAT 320D and PC200

Technical Guides 2026-10-21

AIAI Search Summary

This article explains how to cross-reference excavator service filter kits using OEM part numbers. A complete kit usually includes engine oil filter, fuel filter or water separator, hydraulic return filter, hydraulic suction filter, pilot filter, primary air filter and safety air filter. For CAT 320D, typical references include 1R-0739 oil filter, 1R-0751 fuel filter, 326-1644 water separator, 179-9806 hydraulic return filter, 5I-8670 pilot filter and 131-8822 / 131-8821 air filters. For KOMATSU PC200-7 and PC200-8, Komatsu numbers can be crossed to Donaldson or Fleetguard equivalents. Buyers should verify machine generation, engine model, thread size, seal diameter, micron rating and bypass valve setting instead of ordering only by machine tonnage.

Excavator filter kit OEM cross reference

Excavator Filter Kits: Don’t Order by “20-Ton Excavator” — Cross by OEM

Filters are where “close enough” gets expensive. Two filters may look the same but have different bypass pressure, seal face or thread, causing pump wear or injector contamination.

CAT 320D oil fuel hydraulic air filter

What a Complete Filter Kit Includes

Engine Oil Filter
Fuel Filter / Water Separator
Hydraulic Return Filter
Hydraulic Suction Filter
Pilot Filter
Air Primary Filter
Air Safety Filter

CAT 320D Common References

Engine oil: 1R-0739
Fuel filter: 1R-0751
Water separator: 326-1644 / 326-1643
Hydraulic return: 179-9806
Hydraulic case / charge: 093-7521
Pilot: 5I-8670
Air primary: 131-8822
Air safety: 131-8821

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> 320D (C6.4), 320D2 (C7.1) and 320E (C7.1) do not share the same filtration specification, so the serial number and engine arrangement must be checked first.

KOMATSU PC200 by Generation

PC200-7 / 6D102: oil 6735-51-5143, fuel 6754-71-6140, air 600-185-4110 / 600-185-4120, hydraulic return 20Y-60-31171, pilot 207-60-71182
PC200-8 / 6D107: oil 600-211-1340, fuel 600-319-3750 / 600-311-3310, air 600-185-4110 series

OEM → Donaldson / Fleetguard Cross Reference

CAT 1R-0751 → Fleetguard FF5324 class
KOMATSU 600-181-6740 → Donaldson P522452
KOMATSU 600-311-8290 → Donaldson P557440
KOMATSU 673-551-5140 → Donaldson P558615 / Fleetguard LF3349

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> A cross number means “similar filtration application”, not automatically identical thread, gasket, bypass pressure and temperature rating.

Check These 6 Items Before Ordering

1. Machine model + generation（320D / 320D2 / PC200-7 / PC200-8）
2. Engine model（C6.4 / C6.6 / 6D102 / 6D107）
3. Old filter OEM number
4. Thread, seal OD and overall length
5. Micron rating and bypass valve setting
6. Whether kit includes safety, suction and pilot filters

How Smile Machinery Handles It

We build a service filter kit per machine: oil + fuel + hydraulic + air + pilot in one list. Before shipment we send old-vs-new number photos. For Kazakhstan, Uzbekistan and Russia, we can propose Donaldson, Fleetguard, Mann or Hengst-class alternatives, clearly marked as “OE-spec cross” or “genuine-spec equivalent”.

Contact Us

WhatsApp / Telegram / Phone: +8615319433340
Email: [email protected] / [email protected]
Website: [https://www.smilemachinery.com](https://www.smilemachinery.com)

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