Hooker
Transmission Mount Adapter Kit GM A-Body Crossmember Spacer 4L60 Hooker BlackHeart
SKU: H00I 12657HKR
Description
Part #: 12657HKR
This Hooker BlackHeart LS Swap transmission mount adapter kit is part of the most comprehensively engineered system of mounting components, headers, and exhaust systems available for this application.The entire Hooker BlackHeart swap system is designed to decrease your total swap installation effort and cost while increasing the engineered quality of your vehicle and the compatibility of this component with other popular aftermarket components.Machined aluminum constructionDesigned as part of a fully-engineered LS swap mounting systemFacilitates installation of a GM 4L60-4L70 transmission into any LS swapped 1968-72 A-bodyutilizing the Hooker 71222007HKR transmission crossmemberDesigned for compatibility with an aftermarket Prothane 7-1604 polyurethane transmission mount or a stock replacement rubber mount of equivalent installed heightnSpacer only-bolts not includedDetails:Application: 1964-67 GM A-Body, 1968-72 GM A-BodyBracket Finish: NaturalBracket Material: AluminumColor: SilverEmission Code: 5Engine: GM Gen III/IV/IV (LS/LT)Exhaust Series: Hooker BlackHeartFinish: NaturalMaterial: AluminumMotor Type: GM LSProduct Type: Transmission MountThickness: 1 InchTransmission: 4L60E, 4L65E, 4L70ETransmission Type: 4L60-4L70Type of Component: SpacerWarning: California Proposition 65
Features:
- Machined aluminum construction
- Machined Aluminum Construction
- Designed as part of a fully-engineered LS swap mounting system
- Spacer Only - Bolts Not Included
- Facilitates installation of a GM 4L60-4L70 transmission into any LS swapped 1968-72 A-bodyutilizing the Hooker 71222007HKR transmission crossmember
- Designed for compatibility with an aftermarket Prothane 7-1604 polyurethane transmission mount or a stock replacement rubber mount of equivalent installed heightn
- Spacer only-bolts not included
Transmission Mount Adapter Kit | GM A-Body Crossmember Spacer | LS Swap Mounting System | For Use w/GM 4L60/4L70 Transmission
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Hooker |
| Part Number | H00I 12657HKR |
Buy with Confidence
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.
View Full Return Policy