Gauge Components & Senders

  1. Maretron Fuel Flow Sensor

    $732.39 - $1,695.44
    0
  2. Faria Single Station Rudder Angle Sender - 90530

    $619.57
  3. Racor Pressure and Vacuum Gauge - RK19667

    $291.04
    0
  4. Racor Replacement Water in Fuel Detection Kit - RK30880E

    $230.41
    0
  5. Racor Vacuum Gauge - RK19669

    $230.41
    1
  6. Marinco BEP Ultrasonic Tank Sender - TS1

    $195.16
    0
  7. Racor Vacuum Gauge with Stainless Steel T-Handle - RK19671

    $182.47
    6
  8. Sierra Fuel Sender Kit - 56948P

    $174.01
  9. Blue Sea Systems VSM 422 Vessel Systems Monitor Tank Sender

    $151.45 - $185.29
  10. Arco OEM Repalcement Trim Sender - TS001

    $148.63
    0
  11. Sierra Pack O' Pitots (12-Pack) - 59677P

    $119.04
  12. Sierra Pitot Tubing - 100' - 56353P

    $113.40
  13. Moeller Reed Switch Tank Sending Unit

    $109.15 - $209.26
    3
  14. Racor Fuel Restriction Indicator - RK32036

    $103.51
    0
  15. Racor 500MA/MAM Turbine Series Bowl Ring Kit - RK 15035-01

    $102.10
  16. Sierra Volvo/Penta Temperature Sender - 18-7647

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

    $97.89
    1
  18. VDO Marine Oil Pressure Sender - 360-410

    $79.54
    1
  19. Racor 900/1000FH Turbine Series Gasket Seal Kit - RK 11-1952

    $76.72
  20. Arco OEM Repalcement Outboard Motor Ignition Sender - IG001

    $73.92
    0
  21. Moeller Electric Sending Unit with Return - 035724-10

    $73.90
    1
  22. Seachoice Fuel Sender Reed Switch

    $72.49 - $262.84
  23. SeaStar Teleflex/Sierra Universal Fuel Sender - 90424P

    $65.44
    0
  24. Faria Universal Pitot Kit - 91106

    $56.98
    0
  25. Seachoice Fuel Tank Sender

    $56.98 - $64.03
  26. Seachoice Pitot PVC Tubing - 15381

    $55.57
  27. Faria Depth Gauge Air Temperature Sender - TS0101

    $54.16
  28. Moeller Electric Fuel Level Sending Unit - 035722-10

    $48.52
    5
  29. SeaStar Teleflex Oil Pressure Sender - 18-5899

    $45.70
    0
  30. Faria Cylinder Head Temperature Sender - 90405

    $42.88
  31. Sierra Volvo/Penta Temperature Sensor - 18-7513

    $34.42
  32. Faria Water Temperature Sender

    $33.08 - $59.80
    1
  33. Faria Dual Station Temperature Sender - 1/8" - 90406

    $33.01
  34. Faria Blue Gauge Replacement Bulb (2-Pack) - 4" - KTF053

    $31.62
  35. Faria American Single Standard Temperature Sender - 1/8" - TS1029

    $31.60
  36. Faria European Single Standard Temperature Sender - 1/8" - 90412

    $31.60
  37. Faria Blue Gauge Replacement Bulb (2-Pack) - 2" - KTF052

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

    $26.43
    0
  39. Seachoice Marine Speedometer Pitot Kit - 15391

    $24.02
  40. Moeller 5-Hole Fuel Sender Gasket with Mounting Screws - 035728-10

    $23.14
  41. Faria Blank Gauge Fill

    $21.79 - $38.67
  42. Seachoice Pitot Tube - 15401

    $17.48
  43. SeaStar Teleflex/Sierra Sportsmen Series Universal Pitot Tube - 56973P

    $16.73
    0
  44. Faria Oil Pressure Gauge Adapter - 12-24V - 90315

    $14.71

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.