Radiator Folded Core for Caterpillar 3500 Engines, D11N & 795F | 7W9541

Fits Models At A Glance:

• Caterpillar 3500 Series Engines & Gen Sets: 3508, 3508B, 3508C, 3512, 3512B, 3516, 3516B
• Caterpillar Gas Engines: G3508, G3512, G3516
• Caterpillar Mining Trucks: 795F AC, 795F XQ
• Caterpillar Dozers: D11N

Serial Number Notes:

• 3508: 4RB00001-UP, 4ZL00001-UP, 5TL00001-UP, 7YG00001-UP, 99W00001-UP
• 3508B: 2GR00001-UP, C8T00001-UP, JDM00001-UP
• 3512: 4RB00001-UP, 4WJ00001-UP, 5EL00001-UP, 6FL00001-UP, 8BR00001-UP, 96Z00001-UP
• 3512B: 8BR00001-UP
• 3516: 2PK00001-UP, 4RB00001-UP, 54Z00001-UP, 6CL00001-UP, 7CL00001-UP, 7TR00001-UP, B8F00001-UP
• 3516B: 7TR00001-UP, 8NZ00001-UP, 8WM00001-UP
• D11N: 4HK00001-UP, 74Z00001-UP

Key Notes:

• Part Number: 7W9541 (Caterpillar reference 7W-9541)
• Type: Radiator folded core - core only, no tanks or frame
• Construction: Folded core built so a damaged section can be replaced on its own
• Dimensions: 1759 mm x 121 mm
• Material: Alloy brass with mixed metals - no copper in the build
• Weight: 39.0 lbs.
• Condition: Aftermarket replacement part
• Application: Replaces the radiator folded core on Caterpillar 3500 series engines, gen sets and marine auxiliaries, G3508 through G3516 gas engines, 795F mining trucks and the D11N dozer
• 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 1759 mm x 121 mm size for core 7W-2173, which fits the 777 and 797 trucks. The materials differ - this core carries no copper - and the machine lists do not overlap. Caterpillar also catalogues this core against 11U and 11SU bulldozers and the LD700E industrial engine. Ships LTL freight.

Common Use Case or Symptoms:

Fit these when a 3500 series package creeps up on temperature under continuous load, or when one section of a D11N stack is leaking - a gen set holds one steady heat output for weeks at a time, which finds a weak core sooner than intermittent machine work.

Why Choose Broken Tractor?

• ✅ Sectional Replacement By Design: Caterpillar builds this core so a damaged section comes out alone, which is what keeps a cooling repair proportionate on machines this size.
• ✅ Brass Without Copper: Alloy brass with mixed metals and no copper - the published difference from the identically sized 7W-2173 truck core.
• ✅ Engines Gen Sets And Iron: 3500 series power units, marine auxiliaries, gas engines, 795F mining trucks and the D11N all on one core.