Replacement Bulbs

  1. 48% off

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

    $3.01
    $1.56
    0
  2. Hella Marine SV8.5-8 Festoon Replacement Bulb - 002091361

    $3.55
  3. Sea-Dog Festoon Light Bulb - 1 3/16" - 441071-1

    $5.19
  4. Sea-Dog Double Contact Bayonet Base Light Bulb - 1-15/16" - 441157-1

    $5.19
  5. Sea-Dog Wedge Base Light Bulb - 441906-1

    $5.19
  6. Ancor Festoon Light Bulbs (2-Pack) - 529102

    $5.40
    0
  7. Seachoice Replacement Bulb (2-Pack) - 25/8W - 09971

    $5.97
  8. 38% off

    Hella Marine Replacement Halogen Flood Light Bulb - H83135051

    $9.74
    $5.98
    0
  9. Seachoice Replacement Bulb (2-Pack) - 12W - 09951

    $6.12
  10. Seachoice Replacement Bulb (2-Pack) - 7.5W - 09901

    $6.48
  11. Dr. LED Single-Sided Wedge Base LED Replacement Bulb - 8001559

    $6.67
    0
  12. Seachoice Replacement Bulb - 10W - 09991

    $6.73
  13. Seachoice Replacement Red Light Bulb - 12V

    $6.96
  14. Seachoice Replacement F4T5 Bulb - 06430

    $7.21
  15. Hella Marine H3 Floodlight Replacement Bulb - 178555061

    $7.35
  16. Seachoice Replacement Halogen Bulb

    $7.46 - $8.31
  17. Sea-Dog LED Festoon - 1 1/4" - 442232-1

    $7.77
  18. Hella Marine BA9s Replacement Navigation Bulb - 358107422

    $8.85
  19. Ancor Medium Screw Base Light Bulbs

    $9.18
    0
  20. Scandvik Wafer Back-Pin G4 LED Replacement Bulb 6SMD - 41001

    $9.36
    0
  21. Seachoice Bayonet Socket

    $9.62 - $11.14
  22. 38% off

    Dr. LED Elongated Magnum LED Replacement Bulb - 9000449

    $16.80
    $10.32
    0
  23. SCAD Technologies Ba15d Bayonet Bulb Socket Adapter - 10014

    $10.87
    0
  24. Seachoice Replacement Festoon Bulb - 09891

    $10.89
  25. Scandvik G4 Base Adapters

    $11.06 - $11.76
  26. Perko Double Contact Bayonet Socket

    $11.16 - $16.56
  27. Scandvik Festoon Wafer Bulb

    $11.28 - $14.76
  28. Marinco Replacement Halogen Spotlight Bulb - 12V - 202319

    $11.43
    1
  29. Seachoice Replacement Bulb - 3W - 09921

    $11.53
  30. Sea-Dog Halogen Light Bulb with Reflector MR-16 - 441816-1

    $11.56
  31. Seachoice Replacement LED Bulb - 25/8W - 09981

    $11.78
  32. Marinco Replacement Halogen Spotlight Bulb - 24V - 202320

    $11.79
    0
  33. Scandvik Replacement Wafer Back-Pin G4 LED Bulb - 41000P

    $12.46
  34. Scandvik G4 Wafer Side-Pin Bulb

    $12.46 - $24.76
  35. Scandvik G4 Wafer Back-Pin LED Bulb

    $13.05
    1
  36. Perko Wedge Base Bulb

    $13.09 - $13.65
  37. 19% off

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

    $16.45
    $13.29
    0
  38. Scandvik Warm White G4 Tower Bulb - 41070

    $13.29
  39. Seachoice LED Replacement Bulb for Portable Battery Operated Navigation Light - 02511

    $13.65
  40. 9% off

    Imtra Blue "Mini" G4 LED Replacement Bulb - ILSPG4-09B

    $15.21
    $13.75
    0
  41. Scandvik Blue LED G4 Halogen Look-Alike Bulb - 41038P

    $14.19
  42. Dr. LED Red G4 SMD LED Disk - 9000098

    $15.16
    0
  43. Scandvik Wedge Base Mini-Tower Bulb - 41095P

    $15.61
    1
  44. Perko Festoon Replacement Bulbs

    $16.12 - $23.45
    1
  45. Scandvik Warm White A15 Bulb - 41036P

    $16.23
  46. Imtra "Mini Tower" G4 LED Replacement Bulb - ILTWG4-15W

    $16.51
    1
  47. Scandvik Wedge Base Tower Bulb - 41092P

    $16.56
  48. Sea-Dog All Around LED Festoon - 1 1/4" - 442431-1

    $16.73
 
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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.