Supplier: XCM-Parts Name of product: Final Drive Motor model: TM18 Part number: 401-00335 k104772A 2401-9121B Condition: OEM new Warranty: 1-3 months Payment: T/T , Western Union , PayPal , Credit Card Delivery: estimated 7 days Doosan DH100 Final Drive TM18 is usually refers to the integrated assembly of the walking motor + the final drive reducer. It is located on the inside of the track rack, one on the left and one on the right, which is the core component that drives the excavator to walk.