Radiator Core Module for Caterpillar D9R Track-Type Tractors | 1634059

Fits Models At A Glance:

• Caterpillar Track-Type Tractors: D9R

Serial Number Notes:

• D9R: 7TL00001-UP, 8BL00001-UP, ABK00001-UP, ACL00001-UP, HWH00001-UP, JJB00001-UP, WDM00001-UP

Key Notes:

• Part Number: 1634059 (Caterpillar reference 163-4059)
• Type: Modular radiator core section - one module, not a complete radiator
• Material: Carbon steel and alloy mixed metal
• Weight: 42.9 lbs.
• Condition: Aftermarket replacement part
• Application: Replaces a radiator core module on the Caterpillar D9R track-type tractor
• Shipping Restrictions: Ships to the lower 48 US states only
• Note: This is ONE module. End tanks, seals, spacers and hardware are not included. Caterpillar's record for this number is incomplete - no dimensions, fin count or flow figures are published, only the material and the machine. Measure the module you are removing and compare against the other D9R module before ordering. Ships LTL freight.

Common Use Case or Symptoms:

Fit these when a D9R is losing coolant from a single strip in the stack - on a machine this size the radiator is worth several thousand dollars and a modular repair is the difference between an afternoon and a week.

Why Choose Broken Tractor?

• ✅ D9R Specific: Catalogued to the D9R alone, where most modules in this family span several tractors.
• ✅ Weight Is The Tell: 42.9 lbs against the 36.4 lb module that also covers the D9R - with no published dimensions, weight is the check that works.
• ✅ Data Gap Stated: Caterpillar publishes no dimensions for this number and the listing says so, rather than borrowing figures from a module that looks similar.