Danfoss / Eaton-3.00 CID(49CC)420 Code B

Description & Features

Designed for demanding mobile hydraulic applications, the Danfoss / Eaton-3.00 CID(49CC)420 Code B is an open circuit piston pump from the 420 Series, rated at 3.00 cubic inches per revolution (49cc) displacement. Built to handle high pressure and flow requirements, it delivers fast response and recovery times alongside advanced control options that support greater system efficiency across a wide range of duty cycles.

This pump is well suited to heavy mobile equipment including loader backhoes, agriculture tractors, crawler dozers, mini excavators, articulate haulers, and concrete and asphalt pavers. It also sees regular use in container handling equipment, all-terrain and truck cranes, feller/bunchers, log loaders, railroad equipment, vibratory cable plows, and mining machinery including tunnel boring equipment. The 420 Series addresses the hydraulic demands of both construction and agricultural sectors where reliable open circuit piston pump performance is critical.

SKU: 421AK02121B

Supplier Part Number (MPN): 421AK02121B

Specifications

Alternate Part Numbers
Alternate Part Number MINO-00287X00253
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
Product Width
5.75
Sub Brand
None
Supplier Part Number
421AK02121B
Product Weight
53.10 lbs

Product Questions & Answers (2)

Question by: Tommy E on Aug 22, 2025, 2:11 PM
Got a loader backhoe sitting idle cause the pump went out. This a 3.00 CID open circuit piston pump from the 420 Series, right? Just want to make sure before I pull the trigger on ordering.
Answer by: Customer Support on Aug 24, 2025, 6:20 AM
Yeah, that's correct. The 421AK02121B is a 3.00 cubic inch per revolution pump, which works out to 49cc displacement, and it's part of the 420 Series open circuit piston pump line. Loader backhoes are actually one of the primary applications this pump was built for, so you're in the right place.
Question by: Tommy R on Feb 23, 2026, 5:57 PM
Reckon this fella'll work on my old tractor? It's a backhoe loader.
Answer by: Customer Support on Feb 25, 2026, 6:33 AM
This Danfoss/Eaton open circuit piston pump is well-suited to heavy mobile equipment including loader backhoes and agriculture tractors, so it should be a good fit.