You will find that the SICK brand brings a reassuring level of quality to this general purpose relay.
5 Pack Car Relays 12V 40A, 4 Pin Relay Spst Model JD2912-1H-12VDC 40Amp 14VDC
What stands out about this heavy duty relay is how calmly it handles higher currents without feeling strained.
A nice touch is that the sticker reads model KUP-14D15-24=KU right where you look first.