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Parts for Cummins 4BT 3.9 and 6BT 5.9 Engines

Cummins 4BT/6BT Parts

We carry a wide selection of parts including alternators, starters, hoses, and fans for Cummins 4BT 3.9 and 6BT 5.9 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.


MALE ADAPTER ELBOW - ISB / KTA19 / QSK19

Genuine Cummins Part

$43.52

ELBOW HOSE - ISB

Genuine Cummins Part

$62.81

RESTRICTION INDICATOR - ISB / NH220 / NH250 / NT855

Genuine Cummins Part

$117.63

ELBOW HOSE - ISB

Genuine Cummins Part

$49.81

VALVE SPRING COMPRESSOR TOOL - KTA19 / QSK19 / KTA38 / QSK38

Genuine Cummins Part

$929.91

INJECTOR REMOVER - B / C SERIES

Surplus Item - Special Price

$256.95

PUSH ROD COVER GASKET - ISB

Genuine Cummins Part

$38.15

PLAIN HOSE

Genuine Cummins Part

$47.47

VIBRATION ISOLATOR - ISB / QSB

Genuine Cummins Part

$346.63

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

Genuine Cummins Part

$157.54

VIBRATION ISOLATOR - ISB / QSB / ISC / QSC

Genuine Cummins Part

$15.90

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

Genuine Cummins Part

$256.89

EXHAUST CLAMP - ISB

Genuine Cummins Part

$63.40

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

Genuine Cummins Part

$5.13

TAPPET REMOVAL KIT - ISB / QSB

Genuine Cummins Part

$410.19

CRANKSHAFT REAR WEAR SLEEVE INSTALLER - ISB / QSB

Genuine Cummins Part

$230.59

CRANKSHAFT FRONT WEAR SLEEVE INSTALLER

Genuine Cummins Part

$166.84

MOLDED HOSE - ISB / ISC / QSC

Genuine Cummins Part

$41.31

PLAIN HOSE

Genuine Cummins Part

$22.27

FLEXIBLE HOSE - ISB / ISC / QSC

Genuine Cummins Part

$180.73

FLEXIBLE HOSE

Genuine Cummins Part

$171.70

FLEXIBLE HOSE - ISB

Genuine Cummins Part

$65.64

LOW ENGINE SPEED CUTOFF

Genuine Cummins Part

$1,273.49

FLEXIBLE HOSE - ISB

Genuine Cummins Part

$174.14

PLAIN HOSE - ISB / ISC / QSC

Genuine Cummins Part

$83.88

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

Genuine Cummins Part

$244.73

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

Genuine Cummins Part

$183.97

ANGLE DRIVE ADAPTER - B SERIES / ISB

Genuine Cummins Part

$439.80

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

Genuine Cummins Part

$307.74

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

Genuine Cummins Part

$261.35

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

Genuine Cummins Part

$19.48

HEAT EXCHANGER COVER - ISB

Genuine Cummins Part

$75.76

EXHAUST OUTLET CONNECTION - 4B3.9 / B4.5 / B5.9 / ISB3.9 / ISB5.9G / QSB3.9

Surplus Item - Special Price

$242.56

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

Genuine Cummins Part

$206.86

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

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

$452.20

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

Genuine Cummins Part

$2,210.87

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

Genuine Cummins Part

$536.65

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

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

$540.42

ELBOW HOSE - ISB

Genuine Cummins Part

$55.30

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

Genuine Cummins Part

$569.49

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

Genuine Cummins Part

$121.02

FAN PULLEY - ISB / QSB

Genuine Cummins Part

$119.95

CRANKSHAFT PULLEY - ISB / QSB / ISC / QSC

Genuine Cummins Part

$111.18

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

Genuine Cummins Part

$7.56

TEMPERATURE GAUGE - B SERIES / ISB

Genuine Cummins Part

$466.36

FLEXIBLE HOSE

Genuine Cummins Part

$84.41

VACUUM PUMP BRACE - ISB

Genuine Cummins Part

$84.26

ALTERNATOR BRACE

Genuine Cummins Part

$158.25

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

Genuine Cummins Part

$20.98

THREADED PLUG - 6B5.9 / B5.9 / ISB3.9 / ISB4.5 / ISB5.9G / ISB6.7 / QSB3.9

Surplus Item - Special Price

$17.65

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

Genuine Cummins Part

$408.38

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

Genuine Cummins Part

$97.49

BELT TENSIONER BRACKET - ISB

Surplus Item - Special Price

$160.18

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

Genuine Cummins Part

$534.64

DIPSTICK - ISB

Genuine Cummins Part

$115.44

TURBOCHARGER OIL DRAIN CONNECTION - ISB

Genuine Cummins Part

$115.49

FLEXIBLE HOSE - ISB / QSB

Genuine Cummins Part

$98.56

ELBOW HOSE - ISB

Genuine Cummins Part

$45.50

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

Genuine Cummins Part

$6.70

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

Genuine Cummins Part

$56.65

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

Genuine Cummins Part

$77.09

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

Genuine Cummins Part

$117.50

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

Genuine Cummins Part

$6.17

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

Surplus Item - Special Price

$9.80

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

Genuine Cummins Part

$50.29

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

Genuine Cummins Part

$6.28

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

Genuine Cummins Part

$825.10

VIBRATION ISOLATOR - ISB / QSB / ISC / QSC

Genuine Cummins Part

$442.71

WIRING HARNESS - ISB

Genuine Cummins Part

$441.63

WIRING HARNESS - ISB

Genuine Cummins Part

$860.35

WIRING HARNESS - ISB

Genuine Cummins Part

$113.80

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

Genuine Cummins Part

$103.87

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

Genuine Cummins Part

$121.60

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

Genuine Cummins Part

$256.45

IDLER PULLEY - ISB / QSB

Genuine Cummins Part

$188.05

ALTERNATOR - 4B3.9 / 6B5.9 / 6C8.3 / ISC / ISL / M11 (12 V, 130 A)

Genuine Cummins Part

$1,473.64

FLEXIBLE HOSE - ISB

Genuine Cummins Part

$94.14

MOLDED HOSE - ISB

Genuine Cummins Part

$52.54

FLEXIBLE HOSE - ISB

Genuine Cummins Part

$316.19

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

Genuine Cummins Part

$157.50

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

Genuine Cummins Part

$28.31

AIR CLEANER ELEMENT - ISB

Genuine Cummins Part

$644.93

CRANKCASE BREATHER COVER - ISB

Genuine Cummins Part

$261.58

ROCKER LEVER HOUSING - ISB

Genuine Cummins Part

$271.57

MAIN BEARING SET (STANDARD) - B SERIES

Surplus Item - Special Price Genuine Cummins Part

$164.37

O-RING SEAL - ISB / QSB

Genuine Cummins Part

$32.63

IDLER PULLEY - ISB / QSB / ISC / QSC

Genuine Cummins Part

$223.14

ALTERNATOR PULLEY - ISB / QSB / ISC / QSC

Genuine Cummins Part

$165.91

FAN PULLEY - ISB / QSB / ISC / QSC

Genuine Cummins Part

$124.85

ALTERNATOR - B SERIES / ISB

Genuine Cummins Part

$968.17

ALTERNATOR - ISB

Genuine Cummins Part

$800.00

STARTING MOTOR - 4B3.9 / 6B5.9 / B4.5 / B6.7 / ISB / QSB

Genuine Cummins Part

$629.30

V-BAND CLAMP - ISB / ISC / QSC

Genuine Cummins Part

$76.08

PLAIN HOSE - ISB

Genuine Cummins Part

$27.40

UNLOADER VALVE CAP - ISB / ISC / QSC

$36.94

CLAMP - ISB / ISX / QSX / ISC / QSC

$34.73

V BAND CLAMP - ISB / ISC / QSC /

$30.33

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

$11.31

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

$7.04

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

$2.25