Hustler OEM 607400 Hydraulic Drive Belt Genuine Hustler OEM 607400 hydraulic drive belt for select early Hustler Raptor, Raptor Limited, Raptor SD, and Raptor SDX zero-turn mower models. This belt drives the hydro/transmission system and is built to Hustler OEM specifications for proper fit, durability, and performance. ⚠️ Before You Order – Verify Fitment Hydraulic drive belts can vary by mower series, deck size, and model year. Not sure? Contact us with your Hustler model and serial number and we’ll help verify the correct belt before you order. OEM Part Number: 607400 Superseded From: 603907 Part Type: Hydraulic Drive Belt Brand: Hustler Length: 50 1/2 in. Width: 1/2 in. Application: Early Raptor Series hydraulic drive belt Fits These Hustler Models 934505US, 934513US, 934786, 934794, 934802, 935734, 935742, 935759, 935817, 936492, 936500, 934547US, 934760, 935825, 934778, 935833, 935841, 935858US, 935866US, 935882, 935916, 936476, 936484, 936682, 936708, 936716US, 935767US, 937748, 937755, 937763, 937771, 937813, 937847, 937854, 937862, 938159, 938167, 937789, 937797, 937805, 937821, 937839, 937870, 937888, 938019, 938027, 938035, 938134, 938142, 938621, 938639, 938647, 938654, 938662, 938670, 938688, 938696, 939173, 939181, 939199, 939207, 939397, 939405, 938563, 938571, 938589, 938597, 938605, 938613, 938977, 939165, 939215, 939223, 939389, 938530, 938548, 938555, 939256, 939264 Important Fitment Note This belt is for early Hustler Raptor Series machines including Raptor, Raptor Limited, Raptor SD, and Raptor SDX models. Newer Raptor X, XD, XL, and XDX models typically use Hustler 607830 instead. Related Parts 607830 – Hydraulic drive belt for later/current Raptor X, XD, XL, and XDX models Hydraulic filters Hydro/transmission oil Deck drive belt Idler pulleys Belt tension spring Installation Tips Park the mower on a flat surface, shut the engine off, remove the key, and disconnect the spark plug wires before service. Allow the unit to cool before working near the engine, pulleys, or hydro drive components. Take a photo of the existing belt routing before removal. Inspect idler pulleys, tension springs, and pulley grooves while the belt is off. Replace any seized, noisy, grooved, or loose pulleys before installing the new belt. Make sure the belt is fully seated in all pulley grooves before starting the machine. After installation, run the mower at low speed and confirm the belt tracks correctly before returning to service.