Outfront Motorsports Subaru Performance On-Road and Off-Road Parts Store

Go to for 1000+ HP Subaru Engines

Kit includes 16 studs, 16 12 point nuts, and 16 .158" thick heat treated washers.

Includes Custom Long Reach Tap, Reamer, and Drill.

This stud kit fits all Subaru 4 cylinder DOHC Subaru EJ series Engines

Outfront recommends this stud kit from 400-600HP range

This stud kit fits all Subaru 1999+ 4 cylinder SOHC Subaru EJ series Engine

These are a must for any built engine.

Case studs are required when all out performance is the goal

Brand new OEM case bolts for your Subaru EJ engine.

The ARP Pro Series Main Bolt Kits are forged from premium 8740 chrome moly and all the bolts feature generous under-head radius and heat treating for utmost reliability. The threads are rolled after heat treating, which makes them about 1000% stronger than most other main bolts. These bolts are nominally rated at 200,000 psi, and are application-specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel-ground, hardened washers are included with each kit. 

This is the kit for DUAL AVCS (intake and exhaust)

This kit is for the NON-AVCS version.

This kit is for the guys with single AVCS. With it you'll get 2 AVCS bolts and 2 NON-AVCS bolts.