Excavator Spare Parts
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Coolant compensation and expansion tank identified by BOMAG number 06550084. Exact-number catalog records identify it as an Ausgleichbehälter or expansion tank, while multiple machine-parts records support BW211D-40 and related BW211/BW212 roller applications. Catalog records also place 06550121 and 06550127 in the related tank family; treat them as comparison references, not automatic direct interchanges. Confirm the molded shape, ports, cap, lower fittings and machine serial range.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Manufacturer Part Number | BOMAG coolant expansion tank | 06550084 |
| Related Tank-Family Reference - Verify Configuration | Catalog-paired BOMAG tank number | 06550121 |
| Related Tank-Family Reference - Verify Configuration | Catalog-paired BOMAG tank number | 06550127 |
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
3 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 Machine model: BOMAG BW211D-40, Machine family: BOMAG BW211 / BW212 rollers, Fitment limitation: Confirm molded shape, cap, port positions, lower fittings and machine serial range. Confirm the complete part number and machine serial range before ordering.
Related assembly numbers (not direct interchanges): 06550121, 06550127.
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.
Continue comparing verified references from the same system.
