Caterpillar 400A Plastic Junction Block 9W-0742 is a air heater product that supports cold-start combustion by warming intake air. It is listed for Caterpillar heavy-equipment applications; use part number 9W-0742 as the primary identification reference.
- Part Number: 9W-0742
- Brand: Caterpillar
- Product Category: Air Heater
- Equipment Type: Shovel Logger, Integrated Toolcarrier, Site Prep Tractor, Winch, Motor Grader, Wheel Skidder
- Compatible Models: 345C, IT62G II, IT62H, IT38G II, 586C, 2864C, 57H, 59N, 59L, 58L, 59, 120H, 135H, 163H, 140H, 16H, 130G, 143H, 14H, 12H, 24H, 160H, 555D, 535D, 535C, 535B, 545D, 545C, 525D, 525C
- Engine Models: Confirm by equipment serial number
- Condition: New
Fitment can vary by machine configuration and serial-number range. Compare the original part number, dimensions, connectors and mounting points before purchase.





