Replacement Bulbs

  1. Perko Medium Prefocus Bulb

    $59.98 - $97.78
  2. Perko Double Contact Bayonet Bulb

    $70.78
  3. Perko Double Contact Bayonet Indexing Base Bulb

    $53.23 - $70.78
  4. Perko Wedge Base Bulb

    $13.09 - $13.65
  5. Perko Sealed Beam Unit - 2 3/4" - 043200112V

    $57.28
  6. Perko Sealed Beam Unit - 7" - 043300312V

    $112.65
  7. Whitecap Flush Mount Sidelight Replacement LED

    $47.83
  8. Marinco Spotlight Bulb Replacement Kit - 22014-P

    $162.58
  9. Seachoice Bayonet Socket

    $9.62 - $11.14
  10. Seachoice Replacement Halogen Bulb

    $7.46 - $8.31
  11. Seachoice Replacement Red Light Bulb - 12V

    $6.96
  12. Seachoice Replacement Bulb - 3W - 09921

    $11.53
  13. Seachoice Replacement Bulb (2-Pack) - 12W - 09951

    $6.12
  14. Seachoice Replacement Bulb (2-Pack) - 25/8W - 09971

    $5.97
  15. Seachoice Replacement LED Bulb - 25/8W - 09981

    $11.78
  16. Seachoice Replacement Bulb - 10W - 09991

    $6.73
  17. Seachoice Replacement Festoon Bulb - 09891

    $10.89
  18. Seachoice Replacement Bulb (2-Pack) - 7.5W - 09901

    $6.48
  19. Seachoice Replacement F4T5 Bulb - 06430

    $7.21
  20. Seachoice LED Replacement Bulb - 12V - 02501

    $34.33
  21. Seachoice LED Replacement Bulb for Portable Battery Operated Navigation Light - 02511

    $13.65
  22. Perko Combination Masthead/Anchor Lights Converter Module - 12V - 1680DP012V

    $82.93
  23. Perko Double Contact Bayonet Socket - 0052DP

    $20.02
    1
  24. Perko Double Contact Bayonet Socket

    $11.16 - $16.56
  25. Hella Marine BA9s Replacement Navigation Bulb - 358107422

    $8.85
  26. Hella Marine SV8.5-8 Festoon Replacement Bulb - 002091361

    $3.55
  27. Hella Marine H3 Floodlight Replacement Bulb - 178555061

    $7.17
  28. Ancor Festoon Light Bulbs (2-Pack) - 529102

    $5.40
    0
  29. 18% off

    Scandvik G4 Base Adapters

    $9.81 - $11.06
    $8.97 - $9.81
  30. 19% off

    Scandvik Nav. Festoon Bulb - 360 deg.

    $21.20
    $17.08
  31. 19% off

    Scandvik Nav. Barrel Bulb - 360 deg.

    $21.20
    $17.08
  32. 19% off

    Scandvik Bayonet Tower Parallel Pins - Dual Contacts Bulb

    $17.53
    $14.14
  33. 19% off

    Scandvik Bayonet Tower Offset Pins - Dual Contacts Bulb

    $17.53
    $14.14
  34. 19% off

    Scandvik Bayonet Compact-Tower Parallel Pins - Single Contact Bulb

    $17.53
    $14.14
  35. 19% off

    Scandvik Bayonet Base Wafer Parallel Pins - Dual Contacts Bulb

    $15.75
    $12.72
  36. 19% off

    Scandvik Festoon Wafer Bulb

    $11.28 - $14.76
    $9.14 - $11.92
  37. 19% off

    Scandvik G4 Wafer Back-Pin LED Bulb

    $13.05
    $10.56
    1
  38. 19% off

    Scandvik G4 Wafer Side-Pin Bulb

    $12.37 - $22.70
    $10.09 - $18.28
  39. 19% off

    Scandvik G4 Wafer Side-Pin Dual Color Bulb

    $30.28
    $24.34 - $30.28
  40. 19% off

    Scandvik MR16 LED Light Bulb

    $17.41 - $18.97
    $14.04 - $15.30
  41. Scandvik Warm White G4 Tower Bulb - 41070

    $11.78
  42. 19% off

    Scandvik Mini-Bayonet Mini-Tower Parallel Pins - Single Contact Bulb - 41075P

    $16.80
    $13.56
  43. 19% off

    Scandvik GU10 LED Bulb - 41114P

    $22.95
    $18.49
  44. 19% off

    Scandvik Blue LED G4 Halogen Look-Alike Bulb - 41038P

    $14.19
    $11.48
  45. 19% off

    Scandvik Warm White A19 Bulb - 41037P

    $20.11
    $16.20
  46. 19% off

    Scandvik Bayonet Base Mini-Tower Bulb - 41090P

    $17.26
    $13.92
  47. 19% off

    Scandvik Wedge Base Tower Bulb - 41092P

    $16.56
    $13.37
  48. 19% off

    Scandvik Wedge Base Mini-Tower Bulb - 41095P

    $14.52
    $11.74
    1
 
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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.