B021119159A
All dimensions and threads are the same as stock, for a 100% easy r&r. . The body of these are made from phosphor-bronze, which is less prone to fatigue (cracking) from thermal cycling compared to the original brass bellows. These are also more resistant to corrosion!
"914 Thermostat Bellow - Concourse Perfect!"
R021119159A
This latest design looks different than the original factory bellows.
Requires slight modification of cable to function properly. Use included eyelet and screw to attach cable to thermostat.