CAT 239D3 Heavy-Duty Rubber Tracks | 320x86x49 & 400x86x49Heavy-duty replacement rubber tracks for the CAT 239D3 Compact Track Loader, offered in 320x86x49 and 400x86x49 widths. Track width changes how machine weight is applied to the ground, so the best choice depends on pushing performance, flotation, surface disturbance, access, and operating conditions.Choose Track Width for the Application320x86x49: The narrower footprint concentrates more ground pressure for strong pushing performance on firm ground, a tighter overall machine footprint, and typically lower replacement cost.400x86x49: The wider footprint spreads machine weight across more surface area for lower ground pressure, improved flotation, greater stability, and reduced surface disturbance in mud, sand, soft soil, and landscaping work.Traction, Flotation & StabilityCAT track-loader undercarriages are built around usable ground contact and machine control. Matching track width and tread to the surface helps preserve the balance between traction, flotation, stability, ride quality, and wear.Choose the Tread for the Work C-Block: Rugged all-around tread for dirt, gravel, hardpack, rock, concrete, and general construction. Broad blocks provide stable ground contact and predictable steering. Multi-Bar: High-contact tread for smooth travel, consistent traction, and reduced vibration across dirt, sand, packed ground, wet conditions, and hard flat surfaces. Zig-Zag: Aggressive stepped tread with multiple biting edges and open channels for mud, wet clay, snow, loose soil, and slopes. Heavy-Duty Track ConstructionAdvanced abrasion-resistant rubber, a continuous steel-cord core, and drop-forged, heat-treated steel links provide strength under repeated pushing, turning, grading, loading, and travel. Heavy-duty construction adds approximately 30% more rubber than standard-duty replacements through high-wear areas to help resist stretching, cuts, tearing, chunking, and premature abrasion.Undercarriage & Track LifeInspect sprockets, rollers, idlers, alignment, and track tension before installation. Worn mating components or incorrect tension can accelerate track wear and reduce service life. Set final track tension to Caterpillar's service specification after installation.Warranty & SupportNationwide fulfillment is available, backed by a 24-month warranty against manufacturing defects and application support when needed.Tested. Trusted. Proven.Heavy-Duty Comes Standard.
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