FWIW, I've had Westach gauges for about 4. 5 years (approx 155K miles) and have had to replace the thermocoupler on the transmission gauge every 12-16 months. Just give them a call and they will send one no charge even when their records show it's been more than a year since they sent a replacement part before. The boost hose isn't that durable but they have sent that to me also free of charge. The boost hose will crack where it comes thru the rubber grommet in the fire wall. Flex and heat seems to be the culprit. Put some kind of protective hose around it where it goes thru the grommet and it may last longer. FP gauge has been problem free on this end. I like the EGT/boost combo gauge even w/ the hose issue which has only been a minor annoyance IMO.