Replacement Bulbs

  1. 48% off

    Wesbar Trailer Light Replacement 2057 Bulb - 30-84-057

    $3.12
    $1.60
    0
  2. Hella Marine SV8.5-8 Festoon Replacement Bulb - 002091361

    $3.69
  3. Ancor Single Contact Bayonet Replacement Bulbs -12V - 26.9W (2-Pack) - 521156

    $4.84
  4. Ancor Replacement Bulbs #194 - 12V - 3.8W (2-Pack) - 520194

    $5.07
  5. Sea-Dog Festoon Light Bulb - 1 3/16" - 441071-1

    $5.39
  6. Sea-Dog Double Contact Bayonet Base Light Bulb - 1-15/16" - 441157-1

    $5.39
  7. Sea-Dog Wedge Base Light Bulb - 441906-1

    $5.39
  8. Ancor Festoon Light Bulbs - 12V - 15W (2-Pack) - 522112

    $5.48
  9. Ancor Replacement Bulbs #912 - 12V - 12.8W (2-Pack) - 520912

    $5.52
  10. Ancor Festoon Light Bulbs (2-Pack) - 529102

    $5.62
    2
  11. Seachoice Replacement Bulb (2-Pack) - 25/8W - 09971

    $6.21
  12. 38% off

    Hella Marine Replacement Halogen Flood Light Bulb - H83135051

    $10.14
    $6.22
    0
  13. Ancor H2 Halogen Replacement Bulb - 12V - 55W - 529168

    $6.31
  14. Seachoice Replacement Bulb (2-Pack) - 12W - 09951

    $6.37
  15. Ancor Festoon Light Bulbs - 12V - 6W (2-Pack) - 529095

    $6.63
  16. Seachoice Replacement Bulb (2-Pack) - 7.5W - 09901

    $6.75
  17. Dr. LED Single-Sided Wedge Base LED Replacement Bulb - 8001559

    $6.94
    0
  18. Seachoice Replacement Bulb - 10W - 09991

    $7.00
  19. SCAD Technologies Ba15d Bayonet Bulb Socket Adapter - 10014

    $7.01
    0
  20. Seachoice Replacement Red Light Bulb - 12V

    $7.41
  21. Seachoice Replacement F4T5 Bulb - 06430

    $7.51
  22. Hella Marine H3 Floodlight Replacement Bulb - 178555061

    $7.65
  23. Seachoice Replacement Halogen Bulb

    $7.76 - $8.65
  24. Ancor Festoon Light Bulbs - 24V - 10W (2-Pack) - 522129

    $7.76
  25. Sea-Dog LED Festoon - 1 1/4" - 442232-1

    $8.09
    1
  26. Ancor Replacement Fluorescent Tubes - 12V - 8W (2-Pack) - 529405

    $8.73
  27. Hella Marine BA9s Replacement Navigation Bulb - 358107422

    $9.21
  28. Ancor Mini Halogen Replacement Bulb - 12V - 10W

    $9.34 - $15.16
  29. Ancor Medium Screw Base Light Bulbs

    $9.57
    0
  30. Scandvik Wafer Back-Pin G4 LED Replacement Bulb 6SMD - 41001

    $10.48
    1
  31. Ancor Bayonet Replacement Bulb - 12V - 20W - 529337

    $10.60
  32. Ancor Replacement Bulbs - 24V - 50W - (2-Pack) - 532050

    $10.68
  33. 38% off

    Dr. LED Elongated Magnum LED Replacement Bulb - 9000449

    $17.52
    $10.75
    0
  34. Perko Double Contact Bayonet Socket

    $11.62 - $17.26
  35. Scandvik Festoon Wafer Bulb

    $11.75 - $15.39
  36. Scandvik G4 Base Adapters

    $11.85 - $12.61
  37. Marinco Replacement Halogen Spotlight Bulb - 12V - 202319

    $11.91
    1
  38. Sea-Dog Halogen Light Bulb with Reflector MR-16 - 441816-1

    $12.05
  39. Seachoice Replacement Festoon Bulb - 09891

    $12.23
  40. Marinco Replacement Halogen Spotlight Bulb - 24V - 202320

    $12.29
    0
  41. Seachoice Bayonet Socket

    $12.70 - $14.49
  42. Seachoice Replacement LED Bulb - 25/8W - 09981

    $12.85
  43. Ancor Double Contact Index Replacement Bulbs - 12V - 10W (2-Pack) - 521158

    $12.96
  44. Scandvik Replacement Wafer Back-Pin G4 LED Bulb - 41000P

    $12.99
  45. Scandvik G4 Wafer Side-Pin Bulb

    $12.99 - $25.84
  46. Scandvik G4 Wafer Back-Pin LED Bulb

    $13.60
    1
  47. Perko Wedge Base Bulb

    $13.64 - $14.23
  48. 19% off

    Imtra "Mini" G4 LED Replacement Bulb - ILBPG4-09C

    $17.15
    $13.85
    0
 
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About Replacement Bulbs

Replacement Bulbs for Boats

Marine light bulbs are fairly unique from top to bottom. Applications are nearly endless as well with replacement lightbulbs for boats including everything from navigation to overhead fixtures. Defender Marine offers a wide variety of marine light bulbs to fit every need aboard.

What kind of bulb is this??

Identifying the replacement marine bulb is the first step in choosing a new one. The base style is the place to start for choosing the correct replacement light bulb, matching the bi-pin, single contact, or even screw base of the old bulb will eliminate a lot of guesswork. On the other end LED, Halogen, and incandescent-style marine bulbs are an option of choice.

Adaptors and conversion kits offer more options

With all those styles of marine light bulb bases sometimes it may be easier to choose a marine bulb and then a conversion kit. Adaptors to the two-prong style base and even conversion kits to LED-style bulbs are offered for boaters looking to replace marine light bulbs.

Marine light bulbs for every application

You name it - you got it! There are marine replacement light bulbs for exterior applications like navigational lights, anchor lights, trailer lights, and spotlights. Inside the cabin, marine light bulbs are offered for chart lights, overhead lights, interior halogen lights, and screw-in lamp lights designed for the marine environment.