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DANFOSS / EATON-4.88 CID (80 CC) (420) C-MOUNT 420

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Description & Features

Designed for demanding mobile hydraulic applications, the Danfoss / Eaton X20 420 Series open circuit piston pump offers an 80 cc (4.88 CID) displacement in a C-mount configuration. With high pressure and flow capacity, it is well-suited for equipment that requires reliable, responsive hydraulic power across variable operating conditions.

The 420 Series is commonly specified for loader backhoes, agriculture tractors, crawler dozers, mini excavators, articulated haulers, concrete and asphalt pavers, container handling equipment, and utility boom trucks, among other mobile platforms. Advanced control options support efficiency across a broad range of duty cycles, and the pump's response and recovery characteristics make it a practical fit for applications where precise flow management is critical, including mining machinery, tunnel boring equipment, and rough terrain material handling.

SKU: 421AK00539C

Supplier Part Number (MPN): 421AK00539C

Specifications

Brand
Danfoss
Control Type
Pressure and Flow Compensator
Dimensions
12.5 in L x 5.75 in W x 8.85 in H
Drive Shaft Type
Splined
Housing Color
Blue
Housing Material
Iron
Inlet Type
Split Flanged
Mounting Type
2-Bolt Flanged, 4-Bolt Flanged
Outlet Type
Split Flanged
Rotation Direction
Counterclockwise
Seal Material
FKM
Series
420 Series

Product Questions & Answers (2)

Question by: Hubert C on Feb 27, 2026, 8:51 AM
We run a fleet of loader backhoes and been burning through pumps faster than we'd like. This the 80cc unit, right? Does it hold up well under the kind of variable load cycles that comes with that type of work?
Answer by: Customer Support on Mar 1, 2026, 6:04 AM
80 cc displacement is correct, which lines up with the 4.88 CID rating on this unit. Loader backhoe duty is actually one of the primary applications this pump was built around, so variable load cycles are well within its operating range. The X20 420 Series carries some of the fastest response and recovery times available in its class, which matters a lot when you're constantly shifting between dig, swing, and lift functions. High pressure and flow capacity round it out for that kind of continuous demand.
Question by: Wade A on Apr 25, 2025, 8:19 PM
Will this bolt right up to where an Eaton 420 pump used to be?
Answer by: Customer Support on Apr 27, 2025, 3:35 PM
Designed for mobile hydraulic applications, this Danfoss/Eaton 420 Series pump uses a C-mount configuration, so it should be a direct replacement if your old pump used the same mount.

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