Hooker
Nag1 Transmission Adapter Plate 1973-1976 Mopar A-Body Nag1 Transmission Adapter For Gen III Hemi Swap Hooker BlackHeart
SKU: H00I BHS574
Description
Part #: BHS574
Get that Gen III Hemi swap started the right way, by using a fully engineered engine & transmission mounting system that provides maximum component clearances, ideal drivetrain geometry, and clearance for Hooker BlackHeart swap headers & 3.00 in." exhaust system. This transmission adapter bracket works with the modular crossmember BHS572 to fit the NAG1 automatic transmission. This design allows future transmission changes by swapping out only the transmission adapter bracket instead of replacing the whole crossmember. The crossmember (available separately) and this adapter bracket works with engine mounting brackets (available separately) for optimal engine placement to allow Short Runner Valve Clearance (eliminates modifications to the firewall & brake booster). Hooker BlackHeart swap headers & exhaust systems (available separately) are designed as part of the swap system & provide clearance with all of the transmission options.
Features:
- Transmission Adapter Accommodates Popular NAG1 Automatic Transmissions
- Includes Hardware And Instructions
- Use with Crossmember BHS572 (sold separately) and Transmission Tunnel Hoop BHS578
- Uses with GM Style Transmission Mount - Hooker Part# 71223029HKR or 71223030HKR (Sold Separately)
- Modular Design with Bolt-on Transmission Adapter Allows Future Transmission Swaps without Replacing the Crossmember
- Welded Steel Construction w/ Black Coating for Great Looks and Durability
- Heavy Duty 3/16" Steel Construction - for Strength & Durability
- Includes Mounting Bolts & Instructions
Transmission Crossmember Adapter | Fits w/1973-1976 Mopar A-Body Gen III Hemi Swap NAG1 Transmission
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
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Specifications
| Brand | Hooker |
| Part Number | H00I BHS574 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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