ARP Main Bolt Kit - Toyota 4AGE 16V/20V 1.6L - 203-5001 Acura RSX Reduce Rotational Mass by 4

Reduce Rotational Mass by 4 lbs Over Stock

The upper hose features a unique design that provides additional clearance for use with an RBC or similar intake manifold where the throttle body is relocated and can interfere with the OEM upper radiator hose

Proven 50% increase in radiator efficiency compared to the stock unit

This maximizes the evaporation of any water collecting inside of the can

plugs included for unused ports

ARP Main Bolt Kit - Toyota 4AGE 16V/20V 1.6L - 203-5001 Acura RSX Reduce Rotational Mass by 4Far 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 wrenching 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