RT400 Variator Drive Pulley Replacement for John Deere D105 E100 X105 X106 - Compatible with MIA13031, GT79398, GT79398-A, GT79398-B - Direct Fit for RT400 Transmission (Pre-2014 Models)

OE/OEM Number】MIA13031

• ✔️【PERFECT FIT GUARANTEED】 Direct OEM replacement for John Deere models: D105, E100, X105, X106 with RT400 transmission. Replaces part numbers: MIA13031, GT79398, GT79398-A, GT79398-B (⚠️ For units made before 09/2014). Note: Does NOT include belt keeper. Verify your mower’s manufacture date before purchase.
• ✔️【HEAVY-DUTY CONSTRUCTION】 Precision-engineered from high-grade steel for exact OEM dimensions—no modifications needed. Hardened bearing surfaces resist wear from belt friction, outlasting original parts 2X longer.
• ✔️【EASY 10-MINUTE INSTALLATION】 True bolt-on replacement—fits the RT400 transmission exactly like the factory pulley. No cutting/welding required—saves 1+ hour vs. generic pulleys needing customization.
• ✔️【RESTORES MOWER PERFORMANCE】 Eliminates slipping/vibration caused by worn OEM pulleys. Optimized weight distribution maintains proper variator speed for smooth acceleration.
• ✔️【TRUSTED REPLACEMENT】 Backed by 2-year warranty—contact us with your mower’s model/year for compatibility confirmation. ⚠️ Critical Note: For post-09/2014 models, order GT79362 + MIA12755 instead.