Gauge Components & Senders

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

    $14.71
  2. SeaStar Teleflex/Sierra Sportsmen Series Universal Pitot Tube - 56973P

    $16.73
    0
  3. Seachoice Pitot Tube - 15401

    $17.48
  4. Faria Blank Gauge Fill

    $21.65 - $37.26
  5. Moeller 5-Hole Fuel Sender Gasket with Mounting Screws - 035728-10

    $23.14
  6. Seachoice Marine Speedometer Pitot Kit - 15391

    $24.02
  7. SeaStar Teleflex/Sierra Water Temperature Sending Unit - TS26621

    $26.43
    0
  8. Faria Blue Gauge Replacement Bulb (2-Pack) - 2" - KTF052

    $26.74
  9. Faria European Single Standard Temperature Sender - 1/8" - 90412

    $31.60
  10. Faria American Single Standard Temperature Sender - 1/8" - TS1029

    $31.60
  11. Faria Blue Gauge Replacement Bulb (2-Pack) - 4" - KTF053

    $31.62
  12. Faria Dual Station Temperature Sender - 1/8" - 90406

    $33.01
  13. Faria Water Temperature Sender

    $33.08 - $59.80
    1
  14. Sierra Volvo/Penta Temperature Sensor - 18-7513

    $34.42
  15. Faria Cylinder Head Temperature Sender - 90405

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

    $45.70
    0
  17. Moeller Electric Fuel Level Sending Unit - 035722-10

    $48.52
    5
  18. Faria Depth Gauge Air Temperature Sender - TS0101

    $54.16
  19. Seachoice Pitot PVC Tubing - 15381

    $55.57
  20. Faria Universal Pitot Kit - 91106

    $56.98
    0
  21. Seachoice Fuel Tank Sender

    $56.98 - $64.03
  22. SeaStar Teleflex/Sierra Universal Fuel Sender - 90424P

    $65.44
    0
  23. Seachoice Fuel Sender Reed Switch

    $72.49 - $262.84
  24. Moeller Electric Sending Unit with Return - 035724-10

    $73.90
    1
  25. Arco OEM Repalcement Outboard Motor Ignition Sender - IG001

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

    $75.31
  27. VDO Marine Oil Pressure Sender - 360-410

    $79.54
    1
  28. Sierra Volvo/Penta Temperature Sender - 18-7647

    $92.23
  29. Moeller Electric Fuel Gauge Swingarm Sending Unit Kit - 035726-10

    $97.89
    1
  30. Racor 500MA/MAM Turbine Series Bowl Ring Kit - RK 15035-01

    $99.28
  31. Racor Fuel Restriction Indicator - RK32036

    $103.51
    0
  32. Moeller Reed Switch Tank Sending Unit

    $109.15 - $209.26
    3
  33. Sierra Pitot Tubing - 100' - 56353P

    $113.40
  34. Sierra Pack O' Pitots (12-Pack) - 59677P

    $119.04
  35. Arco OEM Repalcement Trim Sender - TS001

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

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

    $174.01
  38. Racor Vacuum Gauge with Stainless Steel T-Handle - RK19671

    $178.24
    6
  39. Marinco BEP Ultrasonic Tank Sender - TS1

    $195.16
    0
  40. Racor Vacuum Gauge - RK19669

    $224.77
    1
  41. Racor Replacement Water in Fuel Detection Kit - RK30880E

    $225.52
    0
  42. Racor Pressure and Vacuum Gauge - RK19667

    $283.99
    0
  43. Faria Single Station Rudder Angle Sender - 90530

    $619.57
  44. 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.