ARP 260-5401 Main Case Bolt Kit for 2002-2021 Subaru WRX/STI/EJ20/EJ25

Regular price: $446.95
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Sale price: $446.95

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In Stock: 10

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Product Specification:

SKU:ARP260-5401

MPN: 260-5401

UPC: 672036033675

Weight: 3.2 lb

Inventory: 10

Type: Main Stud & Bolt Kits

Vehicle Fitment

2002-2014 Subaru WRX (EJ20, EJ255, EJ257)
2004-2021 Subaru STI (EJ257)
1998-2005 Subaru Impreza RS (EJ25)
1994-2012 Subaru Legacy GT (EJ25)
2004-2013 Subaru Forester XT (EJ255, EJ257)
2005-2012 Subaru Legacy GT (EJ255, EJ257)
2004-2015 Subaru Outback XT (EJ255, EJ257)

Features

Forged from 8740 chrome moly for superior strength
Heat-treated to 180,000 psi tensile strength
Rolled threads after heat treatment for increased fatigue resistance
Under-head radius design for improved load distribution
Includes 17 bolts and 11 washers for complete coverage
Compatible with both OEM and aftermarket crankcases
Designed for high-performance and racing applications
Reusable design for cost-effective engine builds

Specifications

Material: 8740 chrome moly
Tensile Strength: 180,000 psi
Socket Sizes: 12mm 12-point, 10mm 12-point
Includes: 17 bolts, 11 washers, assembly lubricant
Finish: Black oxide for corrosion resistance

Included Components

8x 10mm long bolts
2x 10mm short bolts
1x 8mm long bolt
6x 8mm short bolts
4x M10 washers
7x M8 washers
1x Ultra-Torque assembly lubricant

Product Description

The ARP 260-5401 Main Case Bolt Kit is engineered for Subaru's EJ series engines, including the EJ20, EJ25, EJ255, and EJ257 variants. These bolts are designed to withstand the high stresses of performance and racing applications, offering superior strength and durability over OEM fasteners.

Constructed from 8740 chrome moly and heat-treated to a tensile strength of 180,000 psi, these main case bolts ensure reliable engine performance under demanding conditions. The rolled threads after heat treatment increase fatigue resistance, while the under-head radius design improves load distribution. The black oxide finish offers corrosion resistance, and the reusable design makes them a cost-effective choice for engine builds and rebuilds.

Whether you're building a high-performance engine or replacing worn-out factory bolts, the ARP 260-5401 Main Case Bolt Kit delivers the quality and performance you need to keep your engine running smoothly.