Cummins 6B Engine Parts - Engine Overhaul Kit Section

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Cummins Rebuild Kit for 6B, 6BT, 6BTA - 17.5:1 compression ratio
IFK2160-6B
For engines with CPL #s 597, 692, 712, 716, 729, 761, 804, 807, 856, 938, 943, 947, 948, 949, 950, 970, 971, 994, 1160, 1163, 1168, 1189, 1207, 1245, 1246, 1266, 1279, 1288, 1289, 1440, 1554, 1601, 1627, 1685, 2049, 2413
Price: $ 776.09 -
Cummins Rebuild Kit for 6B, 6BT, 6BTA
IFK2747-6B
For engines with CPL #s 1071, 1902, 1948, 1961, 1962, 2014, 2015, 2016, 2071, 2122, 2125, 2242, 2292, 2296, 2372, 2373, 2417, 2551, 2868, 3868, 8444
Price: $ 682.32 -
Cummins Rebuild Kit for 6B, 6BT, 6BTA
IFK2561-6B
For engines with CPL #s 1551, 1552, 1553, 1744, 1914, 1915, 1916, 2000, 2013, 2023, 2175, 2243, 2249, 2252, 2253, 2347, 2348, 2375, 3219
Price: $ 669.36 -
Cummins Rebuild Kit 6B, 6BT, 6BTA - 15.3:1 compression ratio
IFK0756-6B
For engines with CPL #s 1975, 2205, 2208, 2956, 8457
Price: $ 882.76 -
Cummins Rebuild Kit for 6B, 6BT, 6BTA - 16.5:1 compression ratio
IFK2100-6B
For engines with CPL #s 599, 600, 698, 713, 715, 742, 792, 834, 912, 940, 961, 962, 983, 998, 1174, 1209, 1518, 1523, 1524, 1581, 2050, 2530, 2891, 8206.
Price: $ 699.13 -
Cummins Rebuild Kit for 6B, 6BT, 6BTA - 17.3:1 compression ratio
IFK2060-6B
For engines with CPL #s 596, 691, 714, 791, 802, 845, 960, 999, 1320, 1403, 1433, 1608
Price: $ 661.50 -
Cummins Rebuild Kit for 6B, 6BT, 6BTA - 17.5:1 compression ratio
IFK2170-6B
For engines with CPL #s 953, 970, 1165, 1247, 1313, 1322, 1408, 1570, 1613, 1638, 1928
Price: $ 697.28 -
Nozzle to cool pistons for Cummins B, BT, BTA, ISB and QSB
4937308
Requires one per piston
Price: $ 11.65 -
Cummins Salvage Sleeve - Standard
3904166
Liner to repair or return block to standard sizePrice: $ 40.05 -
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Cummins Fuel Filter & Water Separator
3286503
3.02" diameter, 5.62" height, thread: M16 x 1.5" - 6H INTPrice: $ 44.78 -
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Cummins Oil Filter
3908616
Spin-on type. 3.66" outside diameter, 5.35" height, thread size: 1-16 UNPrice: $ 25.74 -
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Oil Filter Removal Wrench for Detroit Diesel, Caterpillar & Cummins
2321
4-21/32" to 5-5/32"Price: $ 63.29 -
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Temperature switch for Detroit Diesel, Cummins, Caterpillar engines
5146080
Closes at 205 degrees Fahrenheit.Thread size is 1/2 NPTPrice: $ 97.19 -
Cummins 6B Overhaul Kits – Reliable Rebuild Solutions for Naturally Aspirated Engines
Diesel Pro Power offers CPL-matched overhaul kits specifically designed for the Cummins 6B, a naturally aspirated variant of the B Series engine family. Renowned for its simplicity, mechanical durability, and long operational life, the 6B engine remains a workhorse in industrial, agricultural, and marine auxiliary settings.
Whether you’re restoring a 6B engine for stationary power generation, irrigation duty, construction equipment, or marine support roles, our complete engine rebuild kits and accessories are trusted by over 40,000 Diesel Pro Power customers around the world.
Cummins 6B Engine Overview
The Cummins 6B is a 5.9-liter inline 6-cylinder naturally aspirated diesel engine. It shares the robust mechanical platform of the 6BT and 6BTA engines but lacks forced induction. This simplicity makes the 6B particularly desirable for low-maintenance, low-speed, high-torque applications.
Key Specs:
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Engine Type: Inline 6-cylinder, naturally aspirated
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Displacement: 5.9L (359 cu. in.)
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Fuel System: Mechanical direct injection
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Induction: Naturally aspirated (no turbocharger)
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Applications: Agricultural pumps, generators, off-road equipment, marine auxiliaries
The 6B’s minimal electronics and durable cast-iron construction make it a favorite in harsh environments where reliability is paramount.
When to Rebuild a Cummins 6B Engine
Over time, even the most reliable 6B engines require overhaul. Common signs of rebuild necessity include:
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Loss of compression or power
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Excessive blow-by
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Increased oil or fuel consumption
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Difficult cold starting
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White, blue, or black exhaust smoke
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Internal coolant leaks or overheating
A full rebuild can restore original performance and prolong service life by thousands of hours when done with the correct CPL-matched components.
What’s Included in a Cummins 6B Overhaul Kit?
Each Diesel Pro Power 6B rebuild kit contains:
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Pistons matched to CPL compression ratio
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Piston rings and wrist pins
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Cylinder liners
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Main and rod bearings
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Complete upper and lower gasket sets
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Crankshaft front and rear seals
All kits are based on OEM CPL specifications to guarantee compatibility with your engine block, piston bowl shape, and injection timing.
CPL Number Compatibility – Choose the Right Overhaul Kit
Diesel Pro Power offers several Cummins 6B rebuild kits based on CPL numbers and compression ratio:
Overhaul Kit for Cummins 6B – Compatible with CPL Numbers:
597, 692, 712, 716, 729, 761, 804, 807, 856, 938, 943, 947, 948, 949, 950, 970, 971, 994, 1160, 1163, 1168, 1189, 1207, 1245, 1246, 1266, 1279, 1288, 1289, 1440, 1554, 1601, 1627, 1685, 2049, 2413
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Compression Ratio: 17.5:1
Overhaul Kit for Cummins 6B – Compatible with CPL Numbers:
1071, 1902, 1948, 1961, 1962, 2014, 2015, 2016, 2071, 2122, 2125, 2242, 2292, 2296, 2372, 2373, 2417, 2551, 2868, 3868, 8444
Overhaul Kit for Cummins 6B – Compatible with CPL Numbers:
1551, 1552, 1553, 1744, 1914, 1915, 1916, 2000, 2013, 2023, 2175, 2243, 2249, 2252, 2253, 2347, 2348, 2375, 3219
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Compression Ratio: 15.3:1
Overhaul Kit for Cummins 6B – Compatible with CPL Numbers:
1975, 2205, 2208, 2956, 8457
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Compression Ratio: 15.3:1
Overhaul Kit for Cummins 6B – Compatible with CPL Numbers:
599, 600, 698, 713, 715, 742, 792, 834, 912, 940, 961, 962, 983, 998, 1174, 1209, 1518, 1523, 1524, 1581, 2050, 2530, 2891, 8206
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Compression Ratio: 16.5:1
Overhaul Kit for Cummins 6B – Compatible with CPL Numbers:
596, 691, 714, 791, 802, 845, 960, 999, 1320, 1403, 1433, 1608
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Compression Ratio: 17.3:1
Overhaul Kit for Cummins 6B – Compatible with CPL Numbers:
953, 970, 1165, 1247, 1313, 1322, 1408, 1570, 1613, 1638, 1928
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Compression Ratio: 17.5:1
Matching Compression Ratio to Application
Compression Ratio Guidelines:
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15.3:1 – Lower compression for emissions-tuned or light-duty builds
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16.5:1 – Standard industrial duty and balanced torque applications
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17.3:1 – High-efficiency fuel configurations
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17.5:1 – Heavy-duty operation and cold-start performance
Incorrect piston compression can result in hard starting, detonation, or reduced output. Always confirm CPL before ordering.
Complementary Components for a Complete Rebuild
Expansion Plug Kit
Seals block coolant passages. Includes core plugs for full reseal.
Salvage Sleeve (Standard)
Used to recondition blocks with excessive cylinder wear.
Crankshaft Seal Kit – Front
Includes seal and dust cover. Prevents leaks at front cover.
Piston Cooling Nozzles
Spray oil to underside of pistons for improved heat dissipation. One per cylinder.
Post-Rebuild Maintenance and Filters
Oil Filter
Protects engine during critical break-in period.
Fuel Filter
Shields injectors from contaminants in new fuel system.
Fuel/Water Separator
Protects injection system from corrosion or cavitation damage.
Essential Tools for 6B Engine Rebuilds
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Feeler Gauge – For precise valve lash setting
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Piston Ring Installer – Prevents damage to new rings
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Fuel Filter Wrench – Makes servicing easier
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Oil Filter Wrench – Sized for Cummins filter housings
Cooling System Add-Ons
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Radiator Cleaner – Removes rust and scale from internal coolant passages
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Temperature Switch (205°F) – Activates fan or alarm circuits in overheating conditions
Monitoring Gauges
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Oil Pressure, Coolant Temperature, Gauges with Alarms
Post-rebuild monitoring is essential to engine longevity.