IAG Timed Long Block Component Packages For Subaru WRX, STI, LGT, FXT

Part Details:

The IAG Timed Long Block Component Packages are complete, application-matched kits designed to supply all critical timing and supporting components required when assembling or installing a Subaru EJ-series long block. Intended for Subaru WRX, STI, Legacy GT, and Forester XT platforms, these packages ensure proper engine timing, reliability, and long-term durability during fresh engine builds or replacements.

By bundling OEM and IAG performance components into a single, ready-to-install package, these kits simplify the engine assembly process and help eliminate compatibility issues or missing parts that can occur when sourcing components individually.

Vehicle Fitment Overview

Designed for Subaru EJ-series engines found in WRX, STI, Legacy GT, and Forester XT models. Full year-by-year compatibility and specific package variations are listed in the Vehicle Fitment tab above.

These component packages are intended for use during long block assembly or replacement and are not standalone engine assemblies.

What This Package Is For

• New long block installations
• Engine rebuilds requiring complete timing service
• Replacing worn or incomplete timing assemblies
• Ensuring correct timing component compatibility on EJ engines

Package Contents

Each IAG Timed Long Block Component Package includes a carefully selected combination of OEM Subaru and IAG Performance components to support proper timing and oiling system operation.

• Subaru timing cover set (inner and outer) with hardware and seals
• IAG timing belt guide
• IAG black racing timing belt
• Subaru or IAG timing tensioners, idlers, bracket, and related hardware
• Water pump with gasket and mounting hardware
• Subaru intake and exhaust cam sprockets with hardware
• Subaru crankshaft sprocket
• Subaru AVCS cover plates, gaskets, oil line, and hardware
• IAG Stage 1 or Stage 2 oil pump (varies by package)

Available Package Options

Multiple package configurations are available to match different Subaru EJ engine applications and build requirements. Each package is identified by its specific IAG part number.

• IAG-ENG-5140
• IAG-ENG-5141
• IAG-ENG-5142
• IAG-ENG-5143
• IAG-ENG-5144
• IAG-ENG-5145
• IAG-ENG-5146
• IAG-ENG-5147

Benefits & Advantages

• Ensures correct engine timing during assembly
• Reduces the risk of missing or incompatible components
• Combines OEM reliability with IAG performance upgrades
• Saves time compared to sourcing parts individually
• Ideal companion for IAG long block engines

Installation & Build Notes

• Designed for use by professional engine builders or experienced installers
• Installation should follow Subaru factory service procedures
• Proper torque specs and timing alignment are critical
• Package contents may vary depending on engine configuration

Learn more about IAG Performance engine and reliability solutions