Industry News 4R100 Torque Converter ByBrent Wilson on July 2, 2020 Atlantic Torque Converters are now available through WIT. Atlantic has been building premium converters that exceed OEM specifications for 18 years. The 4R100 Torque Converter (TC3661HD) is available with a Billet Lid.AdvertisementClick Here to Read MoreAdvertisement Advertisement In this article:4R100, Atlantic, Products, Whatever It Takes Transmission Parts (WIT) Industry News: Sonnax Aisin Seiki B1/B2 Apply Control Plunger Valve Kit Industry News: 6R60/75/80 GEN 2 Shift Kit Industry News: Chrysler 850RE Friction Plate Kit Industry News: New Multi-Functional Shop Vice and Attachments Advertisement WEBINARS Watch a webinar for free on-demand! E-MAGAZINE Read the most recent edition of Transmission Digest. SUBSCRIBE Stay up to date by signing up for Transmission Digest newsletters.