For sale is a genuine Toyota / Denso ignition igniter module. • Toyota part number: 89621-12010 • Denso part number: 131300-1231 Fits: • Toyota MR2 SW20 Rev 1 (1989–1991) & some early Rev 2 (1991–1992) 3S-GE / 3S-GTE • Toyota Celica ST182 / ST185 (early 3S-GE / 3S-GTE) Condition: used, tested/working. Notes: Please double-check your own part number before buying. Toyota used 89621-12050 on later Rev 2 cars (1992–1993), which has a different connector. This one will only fit looms designed for 89621-12010. Why buy OEM? Denso/Toyota igniters are reliable and long-lasting. Aftermarket copies are known to fail — this is the genuine unit.