Gauge Components & Senders

  1. Sierra Pack O' Pitots (12-Pack) - 59677P

    $130.54
  2. Sierra Pitot Tubing - 100' - 56353P

    $89.66
  3. Sierra Fuel Sender Kit - 56948P

    $134.76
  4. Sierra Volvo/Penta Temperature Sender - 18-7647

    $92.56
  5. Sierra Volvo/Penta Temperature Sensor - 18-7513

    $38.54
  6. Seachoice Fuel Tank Sender

    $44.38 - $57.52
  7. Seachoice Fuel Sender Reed Switch

    $99.86 - $210.82
  8. Seachoice Pitot PVC Tubing - 15381

    $44.38
  9. Seachoice Marine Speedometer Pitot Kit - 15391

    $21.53
  10. Seachoice Pitot Tube - 15401

    $14.67
  11. Marinco BEP Ultrasonic Tank Sender - TS1

    $200.60
    0
  12. Raritan Ruddermaster Panoramic Rudder Angle Indicator Kit

    $1,130.65 - $1,209.50
  13. Raritan Ruddermaster Sender Assembly

    $429.84 - $542.29
  14. Raritan Ruddermaster Panoramic Rudder Angle Indicator Repeater

    $518.88 - $555.40
  15. Raritan Ruddermaster Panoramic Rudder Angle Indicator Meter

    $402.08 - $410.84
  16. Raritan Ruddermaster Rudder Angle Indicator Repeater

    $770.02 - $800.66
  17. Raritan Ruddermaster Rudder Angle Indicator Meter

    $803.58 - $895.56
  18. Raritan Ruddermaster Actuator Rod Assembly - MKDRW

    $70.66
  19. Raritan Ruddermaster Sender Lever - MKSL

    $60.44
  20. Raritan Ruddermaster Sender Potentiometer - MKSP

    $64.82
  21. Raritan RudderMaster Calibration Box - MKCB

    $289.66
  22. Raritan RudderMaster Potentiometer - MKCBP

    $89.64
  23. Blue Sea Systems VSM 422 Vessel Systems Monitor Tank Sender

    $167.02 - $168.48
  24. Raritan Ruddermaster Rudder Angle Indicator Kit

    $1,381.77 - $1,454.77
  25. Faria Blank Gauge Fill

    $20.70 - $35.64
  26. Faria Cylinder Head Temperature Sender - 90405

    $42.92
  27. Faria Dual Station Temperature Sender - 1/8" - 90406

    $38.54
  28. Faria European Single Standard Temperature Sender - 1/8" - 90412

    $32.70
  29. Faria Depth Gauge Air Temperature Sender - TS0101

    $60.44
  30. Faria Blue Gauge Replacement Bulb (2-Pack) - 2" - KTF052

    $26.67
  31. Faria Blue Gauge Replacement Bulb (2-Pack) - 4" - KTF053

    $32.72
  32. Faria Oil Pressure Gauge Adapter - 12-24V - 90315

    $15.21
  33. Faria American Single Standard Temperature Sender - 1/8" - TS1029

    $40.00
  34. Faria Single Station Rudder Angle Sender - 90530

    $641.52
  35. Arco OEM Repalcement Trim Sender - TS001

    $113.00
    0
  36. Arco OEM Repalcement Outboard Motor Ignition Sender - IG001

    $98.42
    0
  37. VDO Marine Oil Pressure Sender - 360-410

    $89.64
    0
  38. SeaStar Teleflex/Sierra Sportsmen Series Universal Pitot Tube - 56973P

    $17.62
    0
  39. SeaStar Teleflex/Sierra Universal Fuel Sender - 90424P

    $67.74
    0
  40. SeaStar Teleflex/Sierra Water Temperature Sending Unit - TS26621

    $27.84
    0
  41. SeaStar Teleflex Oil Pressure Sender - 18-5899

    $53.14
    0
  42. Racor Fuel Restriction Indicator - RK32036

    $98.40
    0
  43. Racor Pressure and Vacuum Gauge - RK19667

    $238.56
    0
  44. Racor Replacement Water in Fuel Detection Kit - RK30880E

    $218.12
    0
  45. Racor Vacuum Gauge - RK19669

    $204.98
    0
  46. Racor Vacuum Gauge with Stainless Steel T-Handle - RK19671

    $150.96
    3
  47. Moeller Reed Switch Tank Sending Unit

    $114.46 - $221.04
    1
  48. Moeller Electric Fuel Gauge Swingarm Sending Unit Kit - 035726-10

    $104.26
    1
 
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About Gauge Components & Senders

Marine Senders

Boat sending units are designed to measure the amount of fluid in a tank, boat speed, temperature, and a variety of pressure-sensitive gauges. Senders can be replaced with parts from Defender Marine or full sender kits are also available for a variety of applications.

What is a Marine Sender?

Marine senders, or boat sending units, are designed as a simple measuring device that then relays (or sends) this measurement to a marine gauge.

How do you test a marine fuel sender?

Fuel senders can easily be tested with an ohms tester. A variety of fuel senders are available including level arm, swing arm and solid float, and conventional style float switch type senders; all can be tested by reading the ohms output.

Floatless marine senders measure for many different gauges.

Pitot kits measure a boat's speed while more technological speed sending units rely on GPS to garner a constant speed reading. Temperature sending units from Defender Marine measure up to 300 degrees and relay this back to temperature gauges in many applications. Pressure sensors measure essential pressures such as oil pressure in the engine. Newly designed floatless senders measure tank pressure versus fluid capacity.