Danfoss / Eaton-4.88 CID (80 CC) (420)OLD P/N 421A

Description & Features

Designed for demanding mobile hydraulic applications, this 4.88 CID (80 cc) open circuit piston pump delivers high pressure and flow capacity across a broad range of heavy-duty equipment. The Danfoss / Eaton-4.88 CID (80 CC) (420)Old P/N 421A is built around advanced control options that support efficient system management, with response and recovery characteristics suited to applications where consistent performance under variable load conditions matters.

Typical installations include loader backhoes, agriculture tractors, crawler dozers, mini excavators, concrete and asphalt pavers, container handling equipment, and feller/bunchers. The pump is also well suited to vibratory cable plows, mining machinery, tunnel boring equipment, railroad equipment, utility boom trucks, and rough terrain forklifts, reflecting the broad compatibility of the 420 Series platform across mobile and off-road machinery.

SKU: 421AK00984B

Supplier Part Number (MPN): 421AK00984B

Specifications

Alternate Part Numbers
Alternate Part Number MINO-00900X27740
Application
Loader backhoes, Vibratory cable plows, Mining machinery, Dump truck lifts, Agriculture tractors, Chemical applicator trucks, Railroad equipment, Container handling, all terrain and truck cranes, Vibratory cable plows, Mining machinery and tunnel boring equipment, Utility boom, off road dump and refuse trucks, Material handling trucks and rough terrain fork lifts, Concrete and asphalt pavers, Feller/bunchers, forwarders and log loaders, Crawler dozers, Articulate haulers, Mini excavators
Brand
Danfoss Power Solutions II (Char-Lynn)
Brand
Char-Lynn
Pack Size
1.00
UOM
EA
Features
Fastest response and recovery times in the market|Increase efficiency with advanced control options|High pressure and flow capacity
ICC
Mobile - OC Piston Pumps
Language
English
Net Pack Quantity Units
EA
Product Width
5.75
Sub Brand
None
Supplier Part Number
421AK00984B
Product Weight
56.10 lbs

Product Questions & Answers (2)

Question by: Hubert S on May 4, 2025, 7:02 PM
Running a crawler dozer on a pretty rough job site, been looking at this pump for a replacement. That 80 cc displacement, is that gonna hold up for that kind of heavy-duty work?
Answer by: Customer Support on May 6, 2025, 6:22 AM
Crawler dozers are actually listed as one of the core applications for this pump, so you're in the right ballpark. The 420 Series platform is built around high pressure and flow capacity, which is what you need when load conditions are shifting constantly on uneven ground. The open circuit piston design handles the kind of variable demand that dozer work throws at it without a lot of drama.
Question by: Terry R on May 30, 2025, 6:15 AM
Hey, will this fit on my older Eaton 421A? Just want to make sure before I order.
Answer by: Customer Support on May 31, 2025, 8:08 AM
This Danfoss/Eaton pump is a direct replacement for the 420 series, including the older 421A models. You shouldn't have any fitment issues.