3x 18650 Li-Ion to 4D-Cell Maglite ADAPTER- Flashlight conversion w/ LED option | eBay
Lumencraft LED Conversion Kit Compatible/Replacement for Maglite Flashlight - 800 Lumen - fits 3 4 5 6 D Cell Maglight - High Power SST40-3 Mode Low 45, Mid 315, High 800 Lumens. (800 Lumen Bulb) - - Amazon.com
HQRP Ultra Bright 300Lm High Power 3W LED Conversion Upgrade Bulb for Maglite 3D 4D 5D 6D / 3C 4C 5C 6C / 3-4-5-6 D/C Cell Torch Flashlights - Walmart.com
Bulb Conversion Kit Torch Flashlight | Led Upgrade Maglite Flashlight - 286lumen Led - Aliexpress
Maglite LED Conversion and Upgrade kits: The best and cheapest dropins and replacements..
Nite Ize C/D Cell LED Flashlight Upgrade Kit LRB2-07-PR - The Home Depot
Replacement Lamp-Bulb for Maglite 4-Cell C & D Flashlight
MAGLITE LED UPGRADE Conversion Bulb 3D 4D 6D D C cell UpLED Torch Flashlight 5060451510003 | eBay
ML300L 4D LED Long-Running Flashlight – Maglite
LudoPam LED Ugrade Bulb Conversion Compatible for Maglite Flashlight 2 Cell C/D - - Amazon.com
Maglite LED CREE Upgrade Conversion Bulb for 3D 4D 5D 6D or C cell Torch (not include torch) _ - AliExpress Mobile
HQRP Ultra Bright 300Lm High Power 3W LED Conversion Upgrade Bulb for Maglite 3D 4D 5D 6D / 3C 4C 5C 6C / 3-4-5-6 D/C Cell Torch Flashlights - Walmart.com
MAGLITE LED UPGRADE Conversion Bulb 3D 4D 6D D C cell UpLED Torch Flashlight 5060451510003 | eBay
TorchUpgrades MagLite LED Conversion/Upgrade Bulb 1300Lm 3D 4D 5D 6D Cell High Power Torch/Flashlight Cree Compatible/Replacement for MagLite - - Amazon.com
Maglite flashlight type 4 D-cell, black | Advantageously shopping at Knivesandtools.com
4D MAG-LITE DIY LED and LI-ion Batteries Retrofit - YouTube