Engine/Drivetrain

New updated design has better clearance for use in an AW11 MR2, now uses cylinder heads dowels for alignment and more accurate port matching!! Billet ITB Adapter for the Big Port 16V 4AG. This ITB adapter will allow you to bolt the individual...

  Techno Toy Tuning Velocitiy Stacks for the Weber, Mikuni, and Solex carburetors. Solid billet construction, these are machined from one piece of aluminum from beginning to end. Fully radiused mouth for maximum airflow potential. Availabe in 40mm,...

Hard to beat Toda's quality when it comes to 4AG performance parts! This timing belt fits all model 16V 4AG's, including the 4AGZE.

TRD Performance Spark Plug Wire set for the AE86. 

Our 4AC adjustable cam gear is now available. Direct bolt on solution, specifically designed for our 4AC brethren.  Available in the following color combo's Black Center, Silver Ring Black Center, Grey Ring Grey Center, Silver Ring Grey Center,...

We now have light weight crank pulleys for the 4AG! If you have the 16V, 20V, FWD, or RWD, we've got you covered. Avaialable in raw silver or grey anodize. These are perfectly balanced, and we've tested them on cars running up to 11,000 RPMS! Please...

This is a special application adapter. Similar to our big port to small port 4ag adapter, but specifically designed not as a port adapter, but rather a TVIS delete plate. The ports are straight cut through in the same size as the ports on the large...

Machined aluminum port adapter. When switching from a big port head to a small port head, but maintaining the original intake manifold, this is the adapter you need. Early model 4AG's were a big port design with a TVIS (flapper plate) between the intake...

ARP Head Stud Kit; High Performance 8740 Series; 12Point Head for Toyota 4 Cylinder Engines: 2TC/3TC 20/22 R/RE/RET 4AGE/GZE 4AGE ST/BT20V 3SGE/GTE 1ZZGE 2ZZGE Clearly, ARP Head Stud/Bolt Kits are the best on the market today, and the favorite of...