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Thumbnail Filmstrip of 2013-2015 6.7L Cummins CSF 3664 OEM Style Replacement Secondary Radiator Images
The small radiator on a 2013-2018 Ram 6.7L plugs or cracks on its own, and the truck still overheats if you only service the big primary. Replace that smaller core with the CSF 3664. It is a 1-row plastic-tank radiator, not the 2-row primary that carries the transmission cooler.
- Build: One aluminum row, 15-7/8 inches by 25-9/16 inches and 7/8 inch thick, crossflow, so this core only replaces the small radiator.
- No transmission cooler: This radiator does not include a transmission oil cooler. The primary cooler stays in CSF 3663.
- Tank: Glass-filled plastic tank and EPDM seals, leak-tested at 150 percent of operating pressure.
- Hoses: Inlet is 1-3/8 inch on the left and the outlet is 1-3/8 inch on the right.
- Part number: CSF 3664 crosses OEM 52014721AB.
- Fitment: 2013-2018 Ram 2500, 3500, 4500, and 5500 with the 6.7L Cummins.
- Does not fit: 2009-2012 Rams, and it does not replace the large primary radiator.
- Not in the box: The radiator cap is not included, and the hoses and clamps are not in the box.
- Warranty: CSF lists a 2-year limited warranty for the original owner. The term is on the warranty card in the box.
Order today to secure your replacement. Confirm the failed part is the small 1-row radiator and the truck is a 2013-2018 6.7L before you order.
The small radiator on a 2013-2018 Ram 6.7L plugs or cracks on its own, and the truck still overheats if you only service the big primary. Replace that smaller core with the CSF 3664. It is a 1-row plastic-tank radiator, not the 2-row primary that carries the transmission cooler.
Build: One aluminum row, 15-7/8 inches by 25-9/16 inches and 7/8 inch thick, crossflow, so this core only replaces the small radiator.
No transmission cooler: This radiator does not include a transmission oil cooler. The primary cooler stays in CSF 3663.
Tank: Glass-filled plastic tank and EPDM seals, leak-tested at 150 percent of operating pressure.
Hoses: Inlet is 1-3/8 inch on the left and the outlet is 1-3/8 inch on the right.
Part number: CSF 3664 crosses OEM 52014721AB.
Fitment: 2013-2018 Ram 2500, 3500, 4500, and 5500 with the 6.7L Cummins.
Does not fit: 2009-2012 Rams, and it does not replace the large primary radiator.
Not in the box: The radiator cap is not included, and the hoses and clamps are not in the box.
Warranty: CSF lists a 2-year limited warranty for the original owner. The term is on the warranty card in the box.
Order today to secure your replacement. Conf[...]
The small radiator on a 2013-2018 Ram 6.7L plugs or cracks on its own, and the truck still overheats if you only service the big primary. Replace that smaller core with the CSF 3664. It is a 1-row plastic-tank radiator, not the 2-row primary that carries the transmission cooler.
- Build: One aluminum row, 15-7/8 inches by 25-9/16 inches and 7/8 inch thick, crossflow, so this core only replaces the small radiator.
- No transmission cooler: This radiator does not include a transmission oil cooler. The primary cooler stays in CSF 3663.
- Tank: Glass-filled plastic tank and EPDM seals, leak-tested at 150 percent of operating pressure.
- Hoses: Inlet is 1-3/8 inch on the left and the outlet is 1-3/8 inch on the right.
- Part number: CSF 3664 crosses OEM 52014721AB.
- Fitment: 2013-2018 Ram 2500, 3500, 4500, and 5500 with the 6.7L Cummins.
- Does not fit: 2009-2012 Rams, and it does not replace the large primary radiator.
- Not in the box: The radiator cap is not included, and the hoses and clamps are not in the box.
- Warranty: CSF lists a 2-year limited warranty for the original owner. The term is on the warranty card in the box.
Order today to secure your replacement. Confirm the failed part is the small 1-row radiator and the truck is a 2013-2018 6.7L before you order.