Murray Heavy-Duty Flat Idler (280-499) replaces Murray 421409, 421409MA, 91179, and 91179MA. The replacement flat idler fits Murray 1987 to 1993 lawn tractors with 38" decks. Engine to transmission flat idler uses plastic material.
- 280-499 Murray Replacement Flat Idler – is heavy-duty
- Replaces (OEM) Murray 421409, 421409MA, 91179, and 91179MA
- Fits Murray 1987 to 1993 lawn tractors with 38" decks
- 1/2" inside diameter, 3 3/8" outside diameter, and 1 1/16" height
- Idler is manufactured with plastic material