Gauge Components & Senders

  1. Moeller Reed Switch Tank Sending Unit

    $74.99 - $143.99
    1
  2. Moeller Electric Fuel Level Sending Unit - 035722-10

    $32.99
    0
  3. Faria Electrical Oil Pressure Sender - 90512

    $45.99
    1
  4. Faria Water Temperature Sender

    $16.16 - $35.99
    0
  5. Moeller Electric Fuel Gauge Swingarm Sending Unit Kit - 035726-10

    $66.99
    0
  6. Moeller Electric Sending Unit with Return - 035724-10

    $49.99
    0
  7. SeaStar Teleflex/Sierra Universal Fuel Sender - 90424P

    $43.99
    0
  8. SeaStar Teleflex/Sierra Water Temperature Sending Unit - TS26621

    $17.90
    0
  9. Sierra Fuel Sender Gasket 5-Hole Unit - 64082

    $6.79
    0
  10. SCAD Technologies Adapter Plate - 10029

    $40.99
    0
  11. SeaStar Teleflex/Sierra Oil Pressure Sender - OP24891

    $34.99
    0
  12. Raritan Ruddermaster MK5 Rudder Angle Indicator Kit

    $650.99
    0
  13. Raritan Ruddermaster MK6 Rudder Angle Indicator Kit

    $569.99
    0
  14. VDO Marine Oil Pressure Sender - 360-410

    $59.99
    0
  15. VDO Marine Pressure Sender - 362-004

    $64.99
    0
  16. 10% off

    VDO Marine Viewline Bezel

    $4.00 - $10.00
    $3.60 - $9.00
    0
  17. Faria 1/8" American Dual Station Oil Pressure Sender - 90511

    $58.99
  18. Faria Electrical Oil Pressure Sender - 90519

    $52.99
    0
  19. Faria Universal Pitot Kit - 91106

    $34.99
    0
  20. SeaStar Teleflex Oil Pressure Sender - 18-5899

    $35.99
    0
  21. SeaStar Teleflex/Sierra Sportsmen Series Universal Pitot Tube - 56973P

    $11.20
    0
  22. Blue Sea Systems Gasoline Tank Level Sender - 1811

    $123.99
    0
  23. Raritan Ruddermaster Rudder Angle Indicator Kit

    $640.99 - $734.99
  24. Faria European 5 Bar Oil Pressure Sender - Single Float - 90516

    $68.99
  25. Faria Single Station Rudder Angle Sender - 90530

    $438.99
  26. Faria Single Fuel Level Sender - 91001

    $73.99
  27. Faria 1/8" American Single Standard Temperature Sender - TS1029

    $17.78
  28. Faria 1/8" Dual Station Temperature Sender - 90406

    $24.99
  29. Faria 1/8" European Single Standard Temperature Sender - 90412

    $24.99
  30. Faria Depth Gauge Air Temperature Sender - TS0101

    $35.99
  31. Faria Cylinder Head Temperature Sender - 90405

    $26.99
  32. Arco OEM Repalcement Outboard Motor Ignition Sender - IG001

    $64.99
    0
  33. Arco OEM Repalcement Trim Sender - TS001

    $81.99
    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.