Folded Radiator Core for Caterpillar D9N, 769D, 637G & 3412 | 9Y3317

Fits Models At A Glance:

• Caterpillar Dozers: D8L, D9N
• Caterpillar Wheel Tractor Scrapers: 631E, 631G, 633E II, 637E, 637G, 657E
• Caterpillar Off-Highway & Quarry Trucks: 768C, 769C, 769D, 771C, 771D
• Caterpillar Wheel Loaders: 988B
• Caterpillar Engines & Pipelayers: 3408, 3412, 3508, 589

Serial Number Notes:

• 3408: 1EM00001-UP, 48W00001-UP, 67U00001-UP, 77M00001-UP
• 3412: 38S00001-UP, 73W00001-UP
• 3508: 4RB00001-UP, 4ZL00001-UP, 5TL00001-UP, 7YG00001-UP, 99W00001-UP
• 589: 31Z00001-UP
• 631G: AWK00001-UP, AXZ00001-UP
• 637E: 1FB00001-UP, 7CB00001-UP, 1HB00001-UP, 1JB00001-UP, 1LB00001-UP
• 637G: AXT00001-UP, AYN00001-UP, AWE00001-UP
• 657E: 90Z00001-UP, 91Z00001-UP, 86Z00001-UP, 6MB00001-UP
• 769C: 2X400001-UP, 1X600001-UP, 3BJ00200-UP
• 769D: 5SS00001-UP, 6YS00001-UP
• 771C: 3BJ00001-UP
• 771D: 5SS00001-UP, 6YS00001-UP
• 988B: 50W00001-UP
• D8L: 4FB00001-UP, 53Y00001-UP, 7JC00001-UP, 7YB00001-UP
• D9N: 1JD00001-UP, 6XJ00001-UP

Key Notes:

• Part Number: 9Y3317 (Caterpillar reference 9Y-3317)
• Type: Folded radiator core - core only, no tanks or frame
• Dimensions: 1275 mm x 122 mm
• Material: Alloy brass
• Weight: 32.0 lbs.
• Condition: Aftermarket replacement part
• Application: Replaces the folded radiator core across Caterpillar D8L and D9N dozers, 631E through 657E scrapers, 768C through 771D trucks, the 988B loader, the 589 pipelayer and 3408 through 3508 engines
• Shipping Restrictions: Ships to the lower 48 US states only
• Note: Core only - end tank seals, gaskets and hardware are not included. IMPORTANT: Caterpillar publishes the same 1275 mm x 122 mm size, the same alloy brass material and the same title for 9Y-3318, and for 2W-5540. All three fit completely different machines. Order by machine model - measurement will not tell them apart. Ships LTL freight.

Common Use Case or Symptoms:

Order these when a scraper, truck or big dozer loses cooling and one section of the stack is weeping - the machines on this list all work in their own dust cloud, and a folded core plugs from the face while the gauge is still reading normal.

Why Choose Broken Tractor?

• ✅ Eighteen Machines One Core: Dozers, scrapers, quarry trucks, a wheel loader, a pipelayer and three engine families all take this core.
• ✅ Order By Machine Not Tape: Two other Caterpillar cores publish this exact size and material - the model list is the only reliable identifier.
• ✅ Solid Brass Core: Alloy brass throughout, which a radiator shop can work on rather than condemn when a tube lets go.