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Blackheart NAG1 Transmission Crossmember Adapter Bracket for Select 1973-1976 Dodge, Plymouth Models [Gen III Hemi Swap]
InfoVehicle Info Needed
HOOKER HEADERSPART NUMBER: 520-BHS574

Blackheart NAG1 Transmission Crossmember Adapter Bracket for Select 1973-1976 Dodge, Plymouth Models [Gen III Hemi Swap]

$4995
ShippingShips on 11/03/2026
Lowest PriceLowest Price Guarantee

Chrysler NAG1 Transmission
Blackheart Gen III Hemi Swap Transmission Adapter Plate
  • 1973-1976 Mopar Models
    • Dodge Dart
    • Plymouth Duster, Scamp, Valiant
  • With NAG1 5-Speed Automatic Transmission
  • Welded 3/16 in. Steel
  • Black Coated Finish
  • Sold Individually

    Breakdown of Included Items

    Hooker Blackheart Chrysler NAG1 Transmission Adapter Plate BHS574:

    • Adapter for use with Hooker BHS572 (sold separately) cross member and a GM style transmission mount such as JEGS 555-61820 or 555-61821 (each sold separately)
    • Requires Hooker BHS578 transmission tunnel hoop (sold separately)
    • Use with Hooker BHS571 Engine Mounting Brackets (sold separately) 
    • Allows for future transmission changes without changing cross member
    • Up to 3 in. exhaust

      • Transmission Adapters for Engine and Transmission Swaps Using Hooker Blackheart Modular Crossmembers

      Hooker Blackheart Transmission Crossmember Adapters allow transmission swaps without changing the entire crossmember.

    Part TypeTransmission Adapter
    Product LineHooker Blackheart Transmission Crossmember Adapter Brackets
    BrandHOOKER HEADERS
    Package Height4.7
    Package Width6.4
    Package Length8.1
    Weight2.55 PG
    Part CategoryPerformance Parts
    Transmission ModelNAG1
    QuantitySold individually
    Mounting Hardware IncludedYes
    Adapter FinishBlack
    Adapter MaterialSteel
    Transmission TypeAutomatic
    Vendor Part NumberBHS574
    Package Qty1
    Package TypeEA
    Please click here to download the instructions PDF file

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    Blackheart Gen III Hemi Swap Transmission Crossmember Fits Select 1973-1976 Dodge, Plymouth Models

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    Blackheart Gen III Hemi Swap NAG1 Transmission Crossmember Hoop Fits Select 1973-1976 Dodge, Plymouth Models

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    Some parts are not legal for use in California or other states with similar laws / regulations
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