This part fits: ALPHA BOILERS CD13R (SHORT PARTS LIST) ALPHA BOILERS CD13R (BOILER COMPLETE) ALPHA BOILERS CD18R (SHORT PARTS LIST) ALPHA BOILERS CD18R (BOILER COMPLETE) ALPHA BOILERS CD24R (SHORT PARTS LIST) ALPHA BOILERS CD24R (BOILER COMPLETE) ALPHA BOILERS C23 (SHORT PARTS LIST) ALPHA BOILERS C23 (BOILER COMPLETE) ALPHA BOILERS HE CB25 (SHORT PARTS LIST) ALPHA BOILERS HE CB25 (BOILER) ALPHA BOILERS HE CB33 (SHORT PARTS LIST) ALPHA BOILERS HE CB33 (BOILER) ALPHA BOILERS HE SY25 (SHORT PARTS LIST) ALPHA BOILERS HE SY25 (BOILER) CD25C (HEAT EXCHANGER) CD25C (ALL PARTS) CD28C (HEAT EXCHANGER) CD28C (ALL PARTS) CD35C (HEAT EXCHANGER) CD35C (ALL PARTS) CD18S (HEAT EXCHANGER) CD18S (ALL PARTS) CD24S (HEAT EXCHANGER) CD24S (ALL PARTS) CD30S (HEAT EXCHANGER) CD30S (ALL PARTS) CD25X (HYDRAULICS) CD25X () CD28X (HYDRAULICS) CD28X ()