Composite Flat Idler Pulley with Flange . Replacement for Model: Hayter MY91179 Murray 091179MA, 421409, 421409MA, 91179, 91179MA . All parts are made to meet or exceed OE specs and quality.Engine to transmission pulley . Fits 38 cut 12 HP lawn tractor 1987-1993. 3.36 OD x .85 Belt groove x 1 /2 ID. 5 /32 Keyway.
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