ARP 260-5401 Case Bolt Kit for SUBARU EJ20 / EJ25 ymm_49 Outer material: Carbon-coated fabric for

Outer material: Carbon-coated fabric for heat resistance and durability

We adopted some of the best elements of cotton air filters into a new generation synthetic Dryflow Air filter

Especially in the area of fatigue strength

rising to a true sporty sound at higher revs

high-frequency tone from the system in the upper rev range

ARP 260-5401 Case Bolt Kit for SUBARU EJ20 / EJ25 ymm_49 Outer material: Carbon-coated fabric for12 Point Case Bolt Kit by ARP. Far 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