99 is amended by inserting in numerical sequence the following new heading: 9902.16.98 Motor vehicles for the transport of goods (provided for in subheading 8704.90.00), the foregoing with only electric motors for propulsion and powered entirely by 74 kWh lithium iron phosphate batteries, such vehicles not including cab chassis 24.9% No change No change On or before 12/31/2020 . 1578. Cabs and bodies for electric vehicles Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.16.99 Bodies (including cabs) (provided for in subheading 8707.90.50), the foregoing designed for use in all-electric vehicles of subheading 8702.90.31 and 8704.90.00 3.6% No change No change On or before 12/31/2020 . 1579. Used gear boxes for certain vehicles for the transportation of goods Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.17.01 Used gear boxes for the vehicles of subheading 8701.20 or heading 8704 (provided for in subheading 8708.40.11) Free No change No change On or before 12/31/2020 . 1580. Gear boxes Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.17.02 New gear boxes for the vehicles of headings 8702 or 8704, the foregoing gear boxes with six speeds and with peak torque rating of at least 69 kg-m but not greater than 110 kg-m (provided for in subheading 8708.40.11) 2.2% No change No change On or before 12/31/2020 . 1581. Used gear boxes for certain other vehicles Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.17.03 Used gear boxes for vehicles of subheadings 8701.30.50, 8701.91, 8701.92, 8701.93, 8701.94, and 8701.95 (provided for in subheading 8708.40.50) Free No change No change On or before 12/31/2020 . 1582. Differentials Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.17.04 Differentials for vehicles of heading 8703, each incorporating