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Cummins 4BT 3.9 and 6BT 5.9 Sensors

Senders and Switches

Ensure the smooth operation of Cummins B-Series engines with sensors from Diesel Parts Direct. We stock a wide selection of parts that support critical components of the 4BT and 6BT engines. From 5.9 Cummins MAP sensors and temperature switches, to 4BT oil pressure sensors and coolant level switches, we’ve got you covered.

Our A+ rating from the Better Business Bureau means you can trust us to deliver exceptional customer service and high-quality Cummins parts. As a bonus, we hold many Cummins sensors in stock, ready for same-day shipping.

For optimum performance levels of Cummins B-Series engines, choose sensors from Diesel Parts Direct.


WATER TEMPERATURE SENDER - 4B3.9 / B4.5 / 6B5.9

Genuine Cummins Part

$253.59

THROTTLE POSITION SENSOR - 4B3.9 / B4.5 / 6B5.9

Genuine Cummins Part

$438.09

PRESSURE SENSOR - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$177.63

OIL PRESSURE SWITCH - 6C8.3 / G8.3 / ISC / ISL

Genuine Cummins Part

$74.57

WATER SENSOR - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$205.29

TEMPERATURE SWITCH - 4B3.9 / B4.5 / 6B5.9 / B6.7

Genuine Cummins Part

$857.70

NITROGEN OXIDE SENSOR

Genuine Cummins Part

$1,453.79

REMANUFACTURED NITROGEN OXIDE SENSOR - 4B3.9 / B4.5

Genuine Cummins ReCon Part

Additional refundable core charge: $270.00 (See Details)

$832.81

TEMPERATURE SWITCH

Genuine Cummins Part

$132.12

TEMPERATURE SWITCH

Genuine Cummins Part

$112.62

TEMPERATURE SWITCH

Genuine Cummins Part

$131.63

DELTA PRESSURE SENSOR - 6C8.3 / G8.3 / ISC / ISL

Genuine Cummins Part

$255.37

PRESSURE SENSOR

Genuine Cummins Part

$266.22

PRESSURE SENSOR - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$327.64

PRESSURE SENSOR - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

WITH 4010519 O-RING SEAL
Genuine Cummins Part

$226.90

OIL PRESSURE SWITCH - 4B3.9 / 6B5.9 / ISB / ISD

Genuine Cummins Part

$35.07

MAGNETIC SWITCH - 4B 3.9 / B 4.5 / 6B 5.9 / ISB 6.7

Surplus Item - Special Pricing Genuine Cummins Part

$46.97

PRESSURE SENSOR - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Genuine Cummins Part

$478.46

PRESSURE GAUGE ADAPTER - QSK19 / QSK50 / B6.7

$627.89

COOLANT LEVEL SWITCH - 4B3.9 / B4.5 / 6B5.9 / B6.7

Genuine Cummins Part

$223.54

CAMSHAFT POSITION SENSOR - ISB / QSB / ISX / QSX

Genuine Cummins Part

$47.10

PRESSURE SENSOR - KTA50 / QSK50 / QSK60 / QSK95 / B SERIES / ISB

Genuine Cummins Part

$914.58

POSITION SENSOR - ISB / QSB / ISX / QSX

$89.85

TEMPERATURE SENSOR - 6C8.3 / G8.3 / ISC / ISL

$80.16

TEMPERATURE SENSOR - B SERIES / C SERIES / ISB / QSB

$46.99

OIL PRESSURE SWITCH

Surplus Item - Special Pricing

$36.00

PRESSURE REGULATOR PLUNGER - 4B3.9 / 6B5.9 / B5.9 / ISB3.9 / ISB5.9G / QSB3.9

$17.06

TEMPERATURE SENSOR - C SERIES

$52.87

POSITION SENSOR - B SERIES / C SERIES / ISB / QSB

$13.13

POSITION SENSOR - B SERIES / C SERIES / ISB / QSB

$52.15

TEMPERATURE SENSOR - B SERIES / C SERIES / ISB / QSB

$52.73

ACTUATOR (ETR FUEL CONTROL)

$82.49

OIL PRESSURE SENSOR

$172.73

PRESSURE SENSOR - B SERIES / C SERIES / ISB / QSB

Surplus Item - Special Pricing

$51.07

PRESSURE SENSOR (INTAKE MANIFOLD)

$86.74

PRESSURE SENSOR - B SERIES / C SERIES / ISB / QSB

$34.55

INTAKE MANIFOLD PRESSURE SENSOR

$97.28

TEMPERATURE SENSOR (COOLANT / OIL / FUEL)

$15.08

PRESSURE SENSOR - 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

$171.67