AT Transmission: Automatic Transmission Assemblies
AT stands for automatic transmission on this site. That clarification is stated plainly because AT is also used as an abbreviation in other fields, and a buyer searching for AT transmission should not have to guess which meaning a page intends. Every AT reference here means an automatic transmission assembly or its related parts categories, and nothing else.
What AT covers
AT transmissions are the traditional automatic transmission category, in which gear ratios change automatically as the vehicle is driven. The AT category sits alongside CVT and DCT categories and transfer case assemblies on this site, and the four categories together make up the assembly range. This page treats AT at category level only: it does not publish gear ratios, dimensions, control details or vehicle applications for any AT unit, because those are properties of a specific unit and are confirmed at quotation stage.
AT supply is described in the same three forms as the wider range: new assemblies and parts, remanufactured assemblies and parts, and used transmissions with used cores. The general pages give the fullest treatment to new AT supply, while remanufactured detail is not covered on this general page. A buyer who knows that an AT assembly is required, but has not yet settled the supply form, should say so in the inquiry, and the reply can set out the options for that category before a unit is chosen.
AT parts categories
Parts categories that can accompany an AT assembly inquiry include valve bodies and mechatronic units, solenoid kits, clutch kits, sealing kits, friction plates, steel plates, filters, thrust washers, rubber parts, oil pumps, pistons, torque converters, sensors and electronic controls. These names are drawn from company materials and are listed here so that a buyer can describe a combined order accurately. They are not a stock list, and no price or specification is attached to any of them on this page.
A common mistake in AT buying is to order by abbreviation alone, without stating the category, the supply form and the quantity. Abbreviations travel badly across markets and suppliers, and an order placed on an abbreviation can arrive as the wrong category. The inquiry form on this site therefore asks for the category in words, the supply form, the quantity and the target date, so that the quotation confirms the same assembly the buyer intended.
Requesting an AT quotation
To request an AT quotation, name the AT assembly category, state whether new, remanufactured or used supply is wanted, and give the quantity and target date. Share your quantity and target date to get MOQ and lead time for your order. Packing requirements and any documentation or after-sales needs should be added in the same message, since those points can change handling and timing even when the assembly itself is unchanged.
Warranty is stated as at least 1 year, following company materials, and certificates are available upon request. Both points are confirmed for the specific AT unit at quotation stage. A buyer who needs a warranty or certificate statement for a tender, an import file or a fleet approval should raise it in the first message, so that the quotation can include the correct statement for the unit ordered.
Share your quantity and target date to get MOQ and lead time for your order.
Brand names appear on this site exactly as used in company materials: Meishun, MESUN and TRANSMESUN. No single spelling has been imposed over the others.