Hot surface igniter for all Jandy Zodiac LRZ Laars, Lite, Legacy Gas Pool Heaters. Australian heaters usually have these spiral igniters. R0457501 / WR0457501. Used on LRZ heaters and Legacy 125, 175, 250, 325, 400
These are *very* fragile. Warranty does not cover breakage.
A "good" igniter should measure 40-100ohms.