Long Blocks for Cummins 6C 8.3 liter engines. Available in both new and rebuilt. The Cummins 6CT diesel engine is a sturdy high torque, low revving engine that is found in generator sets, industrial and off-road equipment and highway vehicles.

Rebuilt and new long blocks available in long block basic and long block supreme. The long Block Supreme includes: block, rods, crank gear, piston assemblies, head, rear cover & seal, oil filter assembly, water pump, crankshaft, oil pump, cam gear, camshaft, front gear housing,new oil cooler core, valve cover(s), valve train (lifters, pushrods & rocker arms). The 6C/8.3L comes with gear cover & seal, oil pan & pickup tube, crankcase breather, thermostat & thermostat housing.

If you don't find what you are looking for in the list below, call us at 1-800-667-6879.

Long Block Supreme

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1986-90, 6C/8.3L, Automotive, Industrial, Front Sump Oil Pan, Un-notched Cylinder Head, A or MW Pump, Low Mount PTO, Non-Reinforced Block, CPL 602, 603, 753, 819, 828, 955, 985

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SKU: 61E6M083A OEM/SN: DR5015RX

Long Block Supreme

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1991-93, 6C/8.3L, Ford F/L Series, Rear Sump Oil Pan, Notched Cylinder Head, CPL 1439, 1262, 1263

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SKU: 61F1M083AR OEM/SN: DR5025RX

Long Block Supreme

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1991-93, 6C/8.3L, Ford F/L Series, Front Sump Oil Pan, Notched Cylinder Head, CPL 1439, 1262, 1263

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SKU: 61F1M083A OEM/SN: DR5025RX

Long Block Supreme

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1991-93, 6C/8.3L, Bus Applications, Center Sump Oil Pan, Un-notched Cylinder Head, P Pump, Low Mount PTO, Reinforced Block, CPL 1439, 1262, 1263, 1406

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SKU: 61F1M083BC OEM/SN: DR5026RX

Long Block Supreme

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1996-02, 6C/8.3L, Industrial/Construction, Front Sump Oil Pan, Un-Notched Cylinder head, MW Pump, Low Mount PTO, CPL 1943, 2007, 2055, 2060, 2061, 2062, 2120, 2185

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SKU: 61F6M083A OEM/SN: DR5063RX

Long Block Supreme

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1986-96, 6C/8.3L, Industrial/Construction, Automotive (Pre 1991 Only), Build to Order, CPL varies

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SKU: 61E6M083SB

Long Block Supreme

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1994-98, 6C/8.3L, Freightliner/Volvo Trk, Front Sump Oil Pan, Un-notched Cylinder Head, CPL 1564, 1566, 2102

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SKU: 61F4M083D OEM/SN: DR5031RX

Long Block Supreme

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1994-98, 6C/8.3L, Freightliner/Volvo Trk, Front Sump Oil Pan, Un-notched Cylinder Head, CPL 1563, 1569, 2101, 2103

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SKU: 61F4M083B OEM/SN: DR5029RX

Long Block Supreme

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1991-93, 6C/8.3L, Freightliner Trk, Front Sump Oil Pan, Un-notched Cylinder Head, CPL 1439, 1262, 1263

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SKU: 61F1M083B OEM/SN: DR5026RX

Long Block Supreme

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1994-98, 6C/8.3L, Ford F/L-Series, Rear Sump Oil Pan, Notched Cylinder Head, CPL 1564, 1566, 1918, 2102

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SKU: 61F4M083CR OEM/SN: DR5032RX

Long Block Supreme

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1994-98, 6C/8.3L, Ford F/L-Series, Front Sump Oil Pan, Notched Cylinder Head, CPL 1564, 1566, 1918, 2102

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SKU: 61F4M083C OEM/SN: DR5032RX

Long Block Supreme

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1994-98, 6C/8.3L, Ford F/L-Series, Rear Sump Oil Pan, Notched Cylinder Head, CPL 1563, 1569, 2101, 2103

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SKU: 61F4M083AR OEM/SN: DR5030RX

Long Block Supreme

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1986-90, 6C/8.3L, Automotive, Industrial, Front Sump Oil Pan, Un-notched Cylinder Head, A or MW Pump, Low Mount PTO, Non-Reinforced Block, CPL 604, 754, 755, 830, 831, 893, 959, 982, 984, 1270

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SKU: 61E6M083B OEM/SN: DR5020RX

Long Block Supreme

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1994-98, 6C/8.3L, Ford F/L-Series, Front Sump Oil Pan, Notched Cylinder Head, CPL 1563, 1569, 2101, 2103

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SKU: 61F4M083A OEM/SN: DR5030RX