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Parts for Cummins ISB and QSB Engines

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Cummins ISB and QSB Parts

We carry a wide selection of parts including alternators, starters, hoses, and fans for Cummins ISB and QSB diesel engines.

If you need any help finding a part, please use our quote request form or call us at 855.470.3525: our knowledgeable inside sales staff will promptly assist you.


TURBO MOUNTING STUD - ISC350 / C8.3-C215 / B5.9 / 6C8.3 / ISB-RV275 / ISC300 / C8.3-P

  • $6.32
    • $6.32
    Qty: 

    SEALING WASHER - 4BT3.9 / 6BT5.9 / ISB3.9 / ISB4.5 / QSB3.9 / QSB4.5

  • $1.48
    • $1.48
    Qty: 

    SALVAGE SLEEVE - B3.9-V110 / QSB5.9480H0 / B5.9-M330 / 6B5.9 / B5.9-C / 4B3.9

  • $23.21
    • $23.21
    Qty: 

    RECTANGULAR RING SEAL - 4BT3.9 / 6BT5.9 / ISB3.9 / ISB4.5 / QSB3.9

  • $0.67
    • $0.67
    Qty: 

    RECTANGULAR RING SEAL - 4BT3.9 / 6BT5.9 / ISB3.9 / ISB4.5 / QSB3.9

  • $0.95
    • $0.95
    Qty: 

    RECTANGULAR RING SEAL - ISB3.9 / ISB4.5 / ISB5.9G / QSB3.9 / QSB4.5

    Genuine Cummins Part

  • $6.24
    • $6.24
    Qty: 

    FLYWHEEL RING GEAR - 4B 3.9 / B 4.5 / 6B 5.9 / ISB 6.7

  • $51.60
    • $51.60
    Qty: 

    FLYWHEEL RING GEAR - 4B3.9 / 6B5.9 / ISB6.7 / QSB5.9 / 6C8.3 / QSC8.3 (138 TEETH)

  • $78.42
    • $78.42
    Qty: 

    FAN PULLEY - ISB / QSB

  • $31.06
    • $31.06
    Qty: 

    FAN PULLEY - ISB / QSB / ISC / QSC

  • $53.56
    • $53.56
    Qty: 

    BUSHING - QSB4 / 6B5.9 / B5.9-M330 / QSB6.7 / QSB4.5 / B5.9-C / B3.9-C76

  • $7.55
    • $7.55
    Qty: 

    PISTON BODY - 4B3.9 / B4.5 / B5.9 / B6.7 / ISB6.7 / QSB5.9

    17.5:1, .50 MM O/S, WITHOUT PIN

  • $70.06
    • $70.06
    Qty: 

    TURBO MOUNTING STUD NUT - ISB240 / 6B5.9 / ISB / ISC350

    Genuine Cummins Part

  • $4.48
    • $4.48
    Qty: 

    HEXAGON NUT - C8.3-C215 / B5.9-M210 / ISB-RV275 / ISC350 / C8.3-P / QSB6.7

  • $1.91
    • $1.91
    Qty: 

    NOISE ISOLATOR - 4BT3.9 / 6BT5.9 / ISB3.9 / ISB4.5 / QSB3.9 / QSB4.5

  • $1.31
    • $1.31
    Qty: 

    FRONT GEAR HOUSING - ISB / QSC / KTA38 / QSK38

  • $234.69
    • $234.69
    Qty: 

    FLYWHEEL RING GEAR - 4B 3.9 / B 4.5 / 6B 5.9 / ISB 6.7

    Genuine Cummins Part

  • $187.11
    • $187.11
    Qty: 

    PUSH ROD COVER GASKET - 4B3.9 / B4.5 / QSB4.5 / B3.9-C130

  • $10.36
    • $10.36
    Qty: 

    OIL FILTER HEAD GASKET - QSB5.9 / B3.9 / BT5.9GEN.DR6 / 6B5.9 / 4B3.9

  • $9.04
    • $9.04
    Qty: 

    GEAR COVER GASKET - QSB-110C / B3.9-C80 / 4B3.9 / B5.9 / 6B5.9 / 4BT3.9

  • $15.77
    • $15.77
    Qty: 

    FRONT GEAR COVER GASKET

  • $24.71
    • $24.71
    Qty: 

    EXHAUST MANIFOLD BOLT - ISB / ISC / 6B5.9

    Genuine Cummins Part

  • $5.39
    • $5.39
    Qty: 

    VIBRATION DAMPER - 4BT / 6BT / ISB 6.7L (8.23" DIAMETER, RUBBER, 4 HOLES)

  • $67.66
    • $67.66
    Qty: 

    UNLOADER VALVE CAP - ISB / ISC / QSC

  • $33.39
    • $33.39
    Qty: 

    FAN SUPPORT BALL BEARING

  • $83.88
    • $83.88
    Qty: 

    FUEL INJECTOR PRELOAD TORQUE WRENCH - KTA19 / QSK19 / ISB / 4BT 3.9

    Genuine Cummins Part

  • $130.12
    • $130.12
    Qty: 

    SEALING WASHER - 4BT3.9 / 6BT5.9 / ISB3.9 / ISB4.5 / QSB3.9 / QSB4.5

    Genuine Cummins Part

  • $5.51
    • $5.51
    Qty: 

    FUEL SUPPLY TUBE - 4B3.9 / ISB / QSB3.9 / QSB4.5

    Genuine Cummins Part

  • $92.54
    • $92.54
    Qty: 

    EXHAUST OUTLET TUBE - 4BT3.9 / 6BT5.9 / ISB3.9 / QSB3.9 / QSB4.5

    Genuine Cummins Part

  • $158.15
    • $158.15
    Qty: 

    FUEL SYSTEM LEAK TESTER - ISB

    Genuine Cummins Part

  • $129.43
    • $129.43
    Qty: 

    FUEL PUMP TESTER - ISB

    Genuine Cummins Part

  • $175.40
    • $175.40
    Qty: 

    ALTERNATOR SUPPORT - 4B3.10 / 6B5.10 / ISB3.9 / ISB4.5 / QSB3.9 / QSB4.5

    Genuine Cummins Part

  • $74.16
    • $74.16
    Qty: 

    MOUNTING SPACER - ISC350 / ISL400 / ISLG320 / QSB6.7 / ISC330 / ISB / B5.9-A200

    Genuine Cummins Part

  • $8.14
    • $8.14
    Qty: 

    SPEED INDICATOR RING - 4B3.9 / 6B5.9 / ISB6.7 / QSB5.9

    Genuine Cummins Part

  • $90.19
    • $90.19
    Qty: 

    SPEED INDICATOR RING - 4B3.9 / 6B5.9 / 6C8.3 / ISC8.3 / QSC8.3 / QSB5.9

    Genuine Cummins Part

  • $85.63
    • $85.63
    Qty: 

    IDLER PULLEY - ISB / QSB

    Genuine Cummins Part

  • $155.57
    • $155.57
    Qty: 

    IDLER PULLEY - ISB / QSB / ISC / QSC

    Genuine Cummins Part

  • $185.45
    • $185.45
    Qty: 

    FAN PULLEY - B Series / ISB / QSB / 6CTA / ISC / QSC

    Genuine Cummins Part

  • $92.10
    • $92.10
    Qty: 

    FAN PULLEY - ISB / QSB

    Genuine Cummins Part

  • $90.85
    • $90.85
    Qty: 

    CRANKSHAFT PULLEY - ISB / QSB / ISC / QSC

    Genuine Cummins Part

  • $84.62
    • $84.62
    Qty: 

    ZINC ELECTRODE PLUG - ISM / QSM / ISB / QSB / ISB

    Genuine Cummins Part

  • $38.29
    • $38.29
    Qty: 

    PISTON PIN - NH220 / NH250 / NT855 / ISB / QSB / ISB

    Genuine Cummins Part

  • $44.78
    • $44.78
    Qty: 

    OIL PAN - 4B3.9 / 6B5.9 / B4.5 / B6.7 / ISB6.7 / QSB4.5 (STAMPED STEEL)

    Genuine Cummins Part

  • $234.16
    • $234.16
    Qty: 

    STARTER - 4B3.9 / B4.5 / B6.7 / ISB6.7 / QSB4.5 / QSB5.9 (12 V)

    Genuine Cummins Part

  • $632.34
    • $632.34
    Qty: 

    STATOR REPAIR KIT - 4B3.9 / B4.5 / B5.9 / B6.7 / ISB6.7 / QSB

    Genuine Cummins Part

  • $126.63
    • $126.63
    Qty: 

    VACUUM PUMP REPAIR KIT - 4B3.9 / 6B5.9 / ISB / ISD

    Genuine Cummins Part

  • $22.39
    • $22.39
    Qty: 

    VIBRATION ISOLATOR - ISB / QSB / ISC / QSC

    Genuine Cummins Part

  • $338.52
    • $338.52
    Qty: 

    VIBRATION ISOLATOR - ISB / QSB

    Genuine Cummins Part

  • $263.78
    • $263.78
    Qty: 

    VIBRATION ISOLATOR - ISB / QSB / ISC / QSC

    Genuine Cummins Part

  • $12.11
    • $12.11
    Qty: 

    RESTRICTION INDICATOR - ISB / NH220 / NH250 / NT855

    Genuine Cummins Part

  • $89.95
    • $89.95
    Qty: 

    PLAIN HOSE - ISB

    Genuine Cummins Part

  • $20.94
    • $20.94
    Qty: 

    PLAIN HOSE - ISB / ISC / QSC

    Genuine Cummins Part

  • $63.82
    • $63.82
    Qty: 

    PLAIN HOSE

    Genuine Cummins Part

  • $16.95
    • $16.95
    Qty: 

    PLAIN HOSE

    Genuine Cummins Part

  • $39.45
    • $39.45
    Qty: 

    MOLDED HOSE - ISB / ISC / QSC

    Genuine Cummins Part

  • $31.43
    • $31.43
    Qty: 

    MOLDED HOSE - ISB

    Genuine Cummins Part

  • $40.17
    • $40.17
    Qty: 

    FLEXIBLE HOSE - ISB

    Genuine Cummins Part

  • $132.51
    • $132.51
    Qty: 

    FLEXIBLE HOSE - ISB

    Genuine Cummins Part

  • $49.96
    • $49.96
    Qty: 

    FLEXIBLE HOSE - ISB / ISC / QSC

    Genuine Cummins Part

  • $137.53
    • $137.53
    Qty: 

    FLEXIBLE HOSE

    Genuine Cummins Part

  • $130.66
    • $130.66
    Qty: 

    FLEXIBLE HOSE

    Genuine Cummins Part

  • $64.55
    • $64.55
    Qty: 

    FLEXIBLE HOSE - ISB / QSB

    Genuine Cummins Part

  • $75.33
    • $75.33
    Qty: 

    FLEXIBLE HOSE - ISB

    Genuine Cummins Part

  • $71.64
    • $71.64
    Qty: 

    FLEXIBLE HOSE - ISB

    Genuine Cummins Part

  • $260.38
    • $260.38
    Qty: 

    ELBOW HOSE - ISB

    Genuine Cummins Part

  • $36.33
    • $36.33
    Qty: 

    ELBOW HOSE - ISB

    Genuine Cummins Part

  • $42.11
    • $42.11
    Qty: 

    ELBOW HOSE - ISB

    Genuine Cummins Part

  • $47.82
    • $47.82
    Qty: 

    ELBOW HOSE - ISB

    Genuine Cummins Part

  • $38.08
    • $38.08
    Qty: 

    ENGINE HEATER - 4B3.9 / B4.5 / B5.9 / B6.7 / ISB6.7 / QSB

    Genuine Cummins Part

  • $1,855.93
    • $1,855.93
    Qty: 

    INTAKE AIR HEATER - 4B3.9 / B4.5 / B5.9 / B6.7 / ISB6.7 / QSB

    Genuine Cummins Part

  • $342.78
    • $342.78
    Qty: 

    WIRING HARNESS - ISB

    Genuine Cummins Part

  • $95.53
    • $95.53
    Qty: 

    WIRING HARNESS - ISB

    Genuine Cummins Part

  • $370.70
    • $370.70
    Qty: 

    WIRING HARNESS - ISB

    Genuine Cummins Part

  • $722.24
    • $722.24
    Qty: 

    FLYWHEEL RING GEAR - 4B3.9 / 6B5.9 / B4.5 / B5.9 / B6.7 / ISB6.7

    Genuine Cummins Part

  • $196.10
    • $196.10
    Qty: 

    TEMPERATURE GAUGE - B SERIES / ISB

    Genuine Cummins Part

  • $389.65
    • $389.65
    Qty: 

    PUSH ROD COVER GASKET - ISB

    Genuine Cummins Part

  • $31.39
    • $31.39
    Qty: 

    HEAT EXCHANGER GASKET - 4BT3.9 / 6BT / B4.5 / B5.9 / ISB3.9 / ISB4.5 / QSB3.9

    Genuine Cummins Part

  • $14.14
    • $14.14
    Qty: 

    EXHAUST OUTLET CONNECTION GASKET - 4BT3.9 / 6BT5.9 / ISB3.9 / QSB3.9

    Genuine Cummins Part

  • $17.32
    • $17.32
    Qty: 

    COVER PLATE GASKET - 4BT3.9 / 6BT / ISB3.9 / ISB4.5 / QSB3.9 / QSB4.5

    Genuine Cummins Part

  • $5.88
    • $5.88
    Qty: 

    ENGINE FAN - 4BT / 6BT / ISB 6.7L (SUCKER TYPE, 20" DIAMETER, 10 BLADES, PLASTIC)

    Genuine Cummins Part

  • $408.38
    • $408.38
    Qty: 

    ENGINE FAN - 4BT / 6BT / 6CTA 8.3L / ISB 6.7L

    SUCKER TYPE, 21" DIAMETER, 10 BLADES, PLASTIC
    Genuine Cummins Part

  • $411.22
    • $411.22
    Qty: 

    ENGINE FAN - 4BT / 6BT / ISB 6.7L (SUCKER TYPE, 22" DIAMETER, 6 BLADES, METAL)

    Genuine Cummins Part

  • $435.47
    • $435.47
    Qty: 

    ENGINE FAN - 4BT / 6BT / ISB 6.7L / 6CTA 8.3L

    BLOWER TYPE, 18" DIAMETER, 7 BLADES, PLASTIC
    Genuine Cummins Part

  • $344.11
    • $344.11
    Qty: 

    AIR CLEANER ELEMENT - ISB

    Genuine Cummins Part

  • $541.38
    • $541.38
    Qty: 

    MALE ADAPTER ELBOW - ISB / KTA19 / QSK19

    Genuine Cummins Part

  • $33.26
    • $33.26
    Qty: 

    DIPSTICK - ISB

    Genuine Cummins Part

  • $98.13
    • $98.13
    Qty: 

    HEAT EXCHANGER COVER - ISB

    Genuine Cummins Part

  • $64.19
    • $64.19
    Qty: 

    CRANKCASE BREATHER COVER - ISB

    Genuine Cummins Part

  • $217.41
    • $217.41
    Qty: 

    WATER INLET CONNECTION - 4BT / 6BT / ISB / QSB

    Genuine Cummins Part

  • $475.35
    • $475.35
    Qty: 

    WATER INLET CONNECTION - 4BT / 6BT / ISB / QSB

    Surplus Item – Special Price Genuine Cummins Part

  • $30.65
    • $30.65
    Qty: 

    TURBOCHARGER OIL DRAIN CONNECTION - ISB

    Genuine Cummins Part

  • $87.86
    • $87.86
    Qty: 

    OIL SUCTION CONNECTION - 4BT / 6BT / ISB / QSB

    Genuine Cummins Part

  • $139.99
    • $139.99
    Qty: 

    EXHAUST CLAMP - ISB

    Genuine Cummins Part

  • $48.27
    • $48.27
    Qty: 

    VACUUM PUMP BRACE - ISB

    Genuine Cummins Part

  • $66.79
    • $66.79
    Qty: 

    FAN SUPPORT - ISB3.9 / ISB4.5 / ISB6.7 / QSB3.9

    Genuine Cummins Part

  • $531.95
    • $531.95
    Qty: 

    BELT TENSIONER BRACKET - ISB

    Genuine Cummins Part

  • $109.68
    • $109.68
    Qty: 

    ALTERNATOR BRACE

    Surplus Item – Special Price Genuine Cummins Part

  • $34.03
    • $34.03
    Qty: 

    UNLOADING VALVE BODY - ISB / ISM / QSM / ISC / QSC / L10

    Genuine Cummins Part

  • $190.97
    • $190.97
    Qty: 

    ANGLE DRIVE ADAPTER - B SERIES / ISB

    Genuine Cummins Part

  • $334.67
    • $334.67
    Qty: 

    FLYWHEEL RING GEAR - 4B3.9 / 6B5.9 / B4.5 / B5.9 / B6.7 / ISB6.7 (127 TEETH)

  • $119.13
    • $119.13
    Qty: 
    Hundreds Of Items Guaranteed in Stock
    Hundreds Of Items Guaranteed in Stock Click here for details

    SAVE 10% OFF YOUR PURCHASE OF $249 OR MORE
    Use code 10-OFF
    Click here for details

    Everyday Free Ground Shipping on Select Overhaul Kits and Turbos
    Everyday Free Ground Shipping on Select Overhaul Kits and Turbos Click here for details
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