Main Bolt Kit for Toyota 1.6L (4AGE) 16V/20V DOHC

Main Bolt Kit for Toyota 1.6L (4AGE) 16V/20V DOHCFar superior to any other main bolts available for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly steel, all ARP main bolts feature a reduced renching head, large underhead radius and rolled threads for the utmost in reliability. The threads are rolled after heat treating which gives them about 2000% better fatigue strength than most main

while the compact head is easily accessed

For those who prefer bolts

The parts are CNC machined from solid aluminum billet (6061) or 1018 mild steel

Precision rolled threads prevent galling while promoting more consistent torque loading

These pump drives feature a CNC milled (not broached) hex

Washers and nuts included where applicable

J-form thread rolling after heat-treat and a special profile

Added features include oversized bolt head flange for cam button retention and reduced socket head size to facilitate easy installation and removal

as well as with a conventional hex head or 12-point (great for tight

To ensure proper sealing of valve covers

substantially stronger than Grade 8 hardware

ARP’s heat-treated 8740 chrome moly wheel studs are a much-needed replacement for any car engaged in oval track or drag racing competition