SEM 5221949 Wheel Loader Operator Cab Knob Base

● SEM 5221949 Knob Base Technical Support

● Part number 5221949 (catalog designation KNOB -SEM / 522-1949 / CA5221949) is the genuine operator cabin interior trim knob base engineered for SEM wheel loaders.

● Material number 5221949 is mounted directly onto the operator cabin interior console and pillar trim structure. It serves as the structural mounting foundation for knob assembly 5228120, ensuring rigid mechanical alignment, smooth rotary action, and rattle-free retention during rough machine operation.

● Inspect base fastening screws, alignment locating pins, and structural integrity during regular machine cabin maintenance.

● SEM 5221949 Knob Base Specifications

Compatibility note: Applicable to SEM SEM636D and SEM660D wheel loader operator cabin interior trim assemblies. Verify console trim panel configuration and mating knob assembly 5228120 compatibility prior to ordering.

● SEM 5221949 Knob Base Key Advantages

• 100% genuine OEM knob base matching SEM material number 5221949 (522-1949) and Caterpillar SEM engineering standards.
• High-rigidity reinforced polymer composite construction preventing deformation and mounting point fatigue under repeated manipulation.
• Precision-engineered mating interface ensuring exact fit and secure retention for knob assembly 5228120.
• Vibration-dampened mounting base design eliminating cabin rattles and maintaining positive tactile feel.
• Full supply support for SEM wheel loader cabin switches, trim panels, knob bases, latches, and interior hardware.

● Contact Information

● E-mail: sales@cptautoparts.com

● Mobile Phone / WhatsApp: +86 151 660 47800

● Headquarter Address: No 100, XIANGGANG Middle Road, Qingdao City, CHINA

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