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White Box Transmission Crossmember Hoop

Gen III Hemi Swap Transmission Crossmember Hoop for 1973-1976 A-Body Mopar - Use with NAG1 Transmission & Crossmember WB130033

Part # WB130042

White Box Transmission Crossmember Hoop

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$96.45
was $108.00
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3

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

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The White Box transmission crossmember hoop is part of the most comprehensive line of Gen III Hemi swap components available for the Mopar A-Body. The Crossmember Hoop allows the installation of the popular, NAG1 5-speed automatic transmission when used with the corresponding adaptor plate (sold separately). The Transmission Crossmember Hoop replaces the very narrow factory Hoop on the original A-Body upper transmission crossmember allowing adequate clearance for drive shaft coupler and Speed sensor tone rings. The transmission Crossmember Hoop is specifically designed to replace the factory hoop and when used in combination with the WB130033 transmission crossmember will provide a bolt-in clearance solution with OE (Original Equipment) strength and durability with no need for any fabrication or welding.

Features:

  • Engineered Transmission Mount System Works together with White Box Engine Mounting Brackets, Transmission Crossmember, Headers, and Exhaust Systems for an Easy Trouble Free Gen III Hemi Engine Swap in the 1973-1976 Mopar A-Body
  • Provides the Necessary Clearance Through the Upper Transmission Crossmember for the Drive Shaft Coupler and Speed Sensor Ring when Installing the NAG1 Transmission
  • 1/2” Steel Upper Hoop Provides the Necessary Structural Integrity When Used in Combination with the WB130033 transmission Crossmember (no Welding Required)
  • No Cutting of the Transmission Tunnel Required
  • Accommodates Popular NAG1 Transmission (Requires Transmission Specific Adaptor plate)
  • Uses the Factory Mounting Holes – For Easy Installation
  • Raw Unpainted Finish for Great Looks and Durability
  • Heavy Duty 3/16” and 1/2” Steel Construction for Strength and Durability
  • Includes Mounting Bolts & Instructions

About White Box

White Box offers budget-conscious solutions for engine swaps, exhaust systems, headers, fuel pumps, and even traction bars. Shop now at Holley.com!

Application1973-1976 Mopar A-Body
Brand White Box
Clearance CategoryEngine Swap Parts
ColorRaw
Discount Percentage5-25%
Emission Code3
6
FinishRaw
MaterialSteel
Motor TypeChrysler Gen III Hemi
Product TypeTransmission Crossmember Support
TransmissionNAG1
Type of ComponentTransmission Crossmember
UPC090127119600
Part NumberWB130042
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.


The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle


WARNING: It is against the law to install this part on an Emissions Controlled Vehicle


The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
Requires the use of WB130033 Transmission Crossmember (available separately) to maintain proper structural integrity of the vehicle. Use with Transmission Adapter WB130035 (available separately). INSTALL NOTES: Requires factory torsion bar crossmember center hoop to be removed for drive shaft coupler clearance. White Box Bolt-in Torsion Bar Crossmember Hoop PN WB130042 is recommended to replace lost structural integrity. Some transmission tunnel massaging will be required for upper case clearance and around shift linkage. Trimming of the pinch weld at the transmission tunnel /firewall intersection will be required. Minor trimming of unused, nonstructural casting flash and tabs will be required to the transmission case. Output flange adapter (Sonnax PN T35-GMFD-01) and custom telescopic drive shaft are required. Floor shifter required B&M PN 81188 or 10-14 Charger /Challenger Shifter MOPAR PN 4578584AD (Shifter only). Use with Drivers Side Mounted Starter on NAG1 transmission - to Avoid Clearance Issues with the Factory Steering System.

*Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

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