I picked up these to replace my last pair:
LASFIT 7440 W21W WY21W LED Turn Signal Light Blinker Bulbs, Build-in CANBUS Anti Hyper Flash, No Load Resistor Need, Plug & Play, 24W 2400LM Extremely Bright Amber Yellow-1 Yr Warranty (Pack of 2)
https://www.amazon.com/dp/B07CMSD8CS..._PR1ABb75CABB4
These have the heat sink, and presumably, the resistor built into the tip as opposed to the base. This design would lessen the impact to the wiring, socket and headlamp housing if it were to overheat. Vastly superior design IMO.
Also made in the US