LINK ASS'Y 419-70-31301 - KOMATSU
Full‑Range Compatibility for WA320 Series
This boom assembly 419-70-31301 is designed to fit WA320-5, WA320-5L, WA320L-5, WA320-6 wheel loaders with various serial numbers and regional specifications, ensuring direct and reliable replacement.
Adaptable to Multiple Control Valve Configurations
It supports 2‑spool, 3‑spool and 5‑spool control valves, and matches versions with remote grease, multi‑coupler, PAP and other factory configurations, greatly improving installation versatility.
Stable Structure for Heavy‑Duty Working Conditions
Manufactured as a genuine‑equivalent lift arm and boom component, it provides strong structural rigidity, stable lifting performance, and long service life under continuous loading operations.
The boom assembly 419-70-31301 is a high‑adaptability structural component for Komatsu WA320 series wheel loaders, covering multiple generations, serial number ranges and configuration versions. It supports various control valves and optional equipment, delivering excellent compatibility, stable lifting performance and durable construction. With precise machining and reliable structure, it effectively ensures operating efficiency and reduces downtime for loader maintenance.
Boom Assembly 419-70-31301
This part is widely used in boom, lift arm, bell crank and linkage systems across multiple serial number ranges and configurations.
Komatsu 419-70-31301 Lift Arm and Bell Crank Assembly for WA320 Wheel Loader
Product Information
Part Name: Lift Arm and Bell Crank Assembly
Part Number: 419-70-31301
Brand: Komatsu (OEM / Aftermarket Available)
Application: Boom and Linkage System
Condition: New
Warranty: 1 Year
Product Description
The 419-70-31301 lift arm and bell crank assembly is designed for Komatsu WA320 series wheel loaders.
This component is part of the boom and linkage system, connecting the lift arm, bell crank, and control linkage to ensure stable bucket movement and smooth lifting operation.
Manufactured according to OEM specifications, it provides precise fitment and reliable durability under heavy-duty working conditions.
Each unit is strictly inspected before shipment to guarantee performance and structural strength.
Compatible Models
WA320-5 (S/N 60001-UP / B10001-UP / H50051-UP)
WA320-5L (S/N A32001-UP)
WA320L-5 (S/N 60001-UP)
WA320-6 (S/N 70001-UP / 70291-UP / A34001-UP / A35001-UP)
WA320-6 North America Version (S/N 70001-70290)
WA320-6 ECOT 3 Version
Overseas Version (S/N 60001-UP)
Applicable for 2-Spool and 3-Spool Control Valve configurations.
Available for models with remote grease system and multi-coupler configuration.
Please provide machine serial number before ordering to ensure correct fitment.
Technical Details
System: Boom and Linkage Assembly
Position: Lift Arm and Bell Crank Section
Valve Type Compatibility: 2-Spool / 3-Spool Control Valve
Mounting Type: Direct Replacement
OEM Part Number: 419-70-31301
Why Choose Us
Strict Quality Control
Heavy-Duty Structural Strength
Competitive Factory Price
Professional Export Packaging
Fast Worldwide Shipping
1-Year Warranty
