Gauge Components & Senders

  1. Faria Oil Pressure Gauge Adapter - 12-24V - 90315

    $14.71
  2. Seachoice Pitot Tube - 15401

    $17.18
  3. SeaStar Teleflex/Sierra Sportsmen Series Universal Pitot Tube - 56973P

    $17.63
    0
  4. Moeller 5-Hole Fuel Sender Gasket with Mounting Screws - 035728-10

    $21.25
  5. Faria Blank Gauge Fill

    $24.44 - $38.67
  6. Seachoice Marine Speedometer Pitot Kit - 15391

    $26.44
  7. Faria Blue Gauge Replacement Bulb (2-Pack) - 2" - KTF052

    $26.74
  8. SeaStar Teleflex/Sierra Water Temperature Sending Unit - TS26621

    $27.39
    0
  9. Faria European Single Standard Temperature Sender - 1/8" - 90412

    $31.60
  10. Osculati Mechanical Fuel Level Indicator - 52.037.00

    $35.83
  11. Sierra Volvo/Penta Temperature Sensor - 18-7513

    $37.24
  12. Faria Water Temperature Sender

    $37.24 - $59.80
    1
  13. Faria Dual Station Temperature Sender - 1/8" - 90406

    $40.06
  14. Faria American Single Standard Temperature Sender - 1/8" - TS1029

    $40.06
  15. Faria Cylinder Head Temperature Sender - 90405

    $42.88
  16. SeaStar Teleflex Oil Pressure Sender - 18-5899

    $48.52
    0
  17. Sierra Oil Pressure Senders - 18-5899

    $49.93
    0
  18. Moeller Electric Fuel Level Sending Unit - 035722-10

    $51.34
    5
  19. Faria Depth Gauge Air Temperature Sender - TS0101

    $54.16
  20. Seachoice Pitot PVC Tubing - 15381

    $54.16
  21. Sierra Temperature Sender - 18-5897

    $54.21
    0
  22. Seachoice Fuel Tank Sender

    $55.57 - $62.62
  23. Sierra Temperature Sender - 18-5898

    $57.74
    0
  24. Faria Universal Pitot Kit - 91106

    $59.80
    0
  25. Sierra Temperature Senders for Mercury/Mariner Outboard Motors - 18-5896

    $65.35
    0
  26. SeaStar Teleflex/Sierra Universal Fuel Sender - 90424P

    $66.85
    0
  27. Seachoice Fuel Sender Reed Switch

    $71.08 - $238.87
  28. Arco OEM Repalcement Outboard Motor Ignition Sender - IG001

    $73.92
    0
  29. Racor 900/1000FH Turbine Series Gasket Seal Kit - RK 11-1952

    $76.72
  30. Moeller Electric Sending Unit with Return - 035724-10

    $78.13
    1
  31. Sierra Volvo/Penta Temperature Sender - 18-7647

    $89.41
  32. Racor 500MA/MAM Turbine Series Bowl Ring Kit - RK 15035-01

    $102.10
  33. Moeller Electric Fuel Gauge Swingarm Sending Unit Kit - 035726-10

    $103.53
    1
  34. Sierra Pack O' Pitots (12-Pack) - 59677P

    $107.76
  35. Sierra Pitot Tubing - 100' - 56353P

    $113.40
  36. Moeller Reed Switch Tank Sending Unit

    $114.79 - $220.54
    3
  37. Arco OEM Repalcement Trim Sender - TS001

    $148.63
    0
  38. Blue Sea Systems VSM 422 Vessel Systems Monitor Tank Sender

    $151.45 - $185.29
  39. Sierra Fuel Sender Kit - 56948P

    $159.91
  40. Racor Vacuum Gauge with Stainless Steel T-Handle - RK19671

    $182.47
    6
  41. Marinco BEP Ultrasonic Tank Sender - TS1

    $195.16
    0
  42. Racor Replacement Water in Fuel Detection Kit - RK30880E

    $230.41
    0
  43. Racor Vacuum Gauge - RK19669

    $260.02
    1
  44. Racor Pressure and Vacuum Gauge - RK19667

    $298.09
    0
  45. Faria Single Station Rudder Angle Sender - 90530

    $619.57
  46. Maretron Fuel Flow Sensor

    $732.39 - $1,695.44
    0

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.