Defeo is always looking to expand our current products and services related to the Allison Transmission industry. We are always in the market to buy Allison transmission cores, Allison Parts, tools, literature, or anything else related to the Allison Transmission line. Please see below for specific instructions on how to sell to us.

Selling Transmission Cores

We are always looking to buy Allison Transmissions cores for both on and off-highway Allison Transmissions. In order to quote you the best pricing possible, when sending us information on the cores you are looking to sell, please include the following data.

  • Model of Transmission (Found on tag on main case)

  • Serial # of Transmission (Usually a 10 digit # also on the tag on main case)

  • Any key notes pertaining to the cores; for example:

    • “Core missing Torque Converter”

    • “Main Case is cracked”

    • “Good running takeout”

    • “Was in a fire”, etc.

Please send this information to us one of the following ways.
  • Send an email to purchasing@defeomfg.com with the subject line “Transmission Cores”

  • Send a fax to 203.775.0816, attention to: “Transmission Cores”


Once we receive this information; a representative will get back to you within 24 hours.

SellingParts & Other Items

If you or your company have a related product or service than can enhance our product line, or any Allison part(s) you are looking to sell, please send your information to us one of the following ways.

  • Send an email to purchasing@defeomfg.com

  • Send a fax to 203.775.0816, attention to: Purchasing.

  • Mail information to:

DefeoManufacturing

115 Commerce Drive

Brookfield CT, 06804

Attention: Purchasing

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