Mazworx Pro Street Billet Wet Block for 2JZ-GTE Supra MAZ-30215


The manufacturer has stopped production of this item. We have none left, and cannot get more. But we can help you find a comparable alternative that is available.



Note: This product is no longer available. Please see the alternative options: Block for ½ head studs or Block for 11mm head studs

  • Designed for Bigger 9/16"-1/2" Top Fuel Head Studs
  • Bigger 1/2" Main Studs
  • Billet Main Caps
  • Custom Darton MID Wet Sleeves
  • Accepts factory accessories like A/C, Power Steering, Alternator, oil pump, and water pump
  • Uses factory engine mounts
  • True wet block with wet sleeves
  • 40lbs lighter than the factory cast iron block
  • designed for use with a full cooling system

The Mazworx Pro Street Billet Wet Block was designed for 6 second power capacity in a package that can still be driven on the street with a cooling system. It's external dimensions mimic the factory cast iron block and accommodate all of the factory hardware and mounting placement for the stock engine mounts, air conditioning, power steering, alternator, and more. 

The idea here is that it is a direct drop in replacement for the factory cast iron block. 

The internal structure of the block is totally different than factory. The cylinders are a custom MID sleeve from Darton that uses flanges to locate on each other, fortifying their position, while still allowing water to run directly down the outside face of the sleeves. 

Unlike other blocks, the water is in direct contact with the outside of the sleeve to improve thermal transfer. 

Combustion sealing is improved by using a 9/16"-1/2" Top Fuel headstuds that are both longer and thicker than factory studs. This allows the stud to reach down further into the block to provide a better clamp on the head gasket. 

The design of the mans mimics the factory, but with a billet steel cap, and larger-than-stock main studs.

This block has already been 6's in our Supra so it has been tested and proven before it was ever made available to the public.

If you are trying to make big power in a car that will see street duty and will be using a cooling system and an alternator, this block should be a consideration in your build plan. If you have questions regarding the use of this block, please feel free to contact us for advice.


  • Billet Block
  • Main Studs
  • Billet Main Caps
  • Custom Darton MID Sleeves


More Information
Shipping Weight (Dimensional) 98.200000
Clearance Sale No
Availability Discontinued
Part Type Bare Engine Blocks
Make Toyota / Lexus
Model Supra TT MK4 93-98 JZA80
Engine 2JZ-GTE
Brand Mazworx
Carb Legal Unspecified
Shipping Label Free Shipping


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