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Engine Builds

Engine Builds

Engine Builds

IAG Performance carries oem replacement and high-performance engine building parts for your 2002-2023 Subaru WRX, STI, Legacy GT, Forester XT, and BRZ. We have all the parts you need for your Subaru such as Short blocks, Longs Blocks, Pistons, Cranks, Rods, Cases, Cylinder Heads, Camshafts, Sprockets, Pulleys, Gaskets, Timing Belts, Hardware, and more.

 

Here are just a few of the brands we carry-
ACL, ARP, ATI, Brian Crower, CP Pistons, Carrillo, Clevite, Fluidampr, GSC, Gates, HKS, IAG Performance, JE Pistons, JE Pro Seal, Kelford Cams, King Engine Bearings, Manley, Perrin, Radium Engineering, Subaru, Tomei, and more.

Belts
Belts

Cylinder Heads & Parts
Cylinder Heads & Parts
Subaru Cylinder Heads & Parts

Cylinder Heads & Parts

Shop Subaru cylinder heads and valvetrain components at IAG Performance for 2002–2023 Subaru WRX, STI, Legacy GT, Forester XT, and BRZ models. Our selection includes high-quality Subaru cylinder head parts designed for EJ20, EJ25, and FA20 engines, whether you're performing routine maintenance, upgrading valvetrain components, or building a high-performance Subaru engine. Browse a wide range of Subaru cylinder head upgrades and replacement parts including ported head packages, camshafts, cam sprockets, valves, valve springs, retainers, valve guides, gaskets, seals, timing chains, head hardware, and other essential valvetrain components. These parts are engineered to support everything from reliable daily driving to high-horsepower Subaru WRX and STI engine builds. IAG Performance carries cylinder head parts and valvetrain components from many of the most trusted names in the Subaru performance community. Featured brands include AEM, Brian Crower, GSC Power Division, IAG Performance, JE Pro Seal, Kelford Cams, Killer B Motorsport, Manley Performance, Subaru OEM, Turnin Concepts, and more. Whether you're refreshing your Subaru cylinder heads or building a fully upgraded EJ or FA engine, IAG Performance offers the parts and expertise to support your Subaru WRX, STI, Legacy GT, Forester XT, or BRZ build.

Engine Assembly Parts
Engine Assembly Parts
Photo collage of engine assembly parts

Engine Assembly Parts

Shop Subaru engine assembly parts at IAG Performance for WRX, STI, BRZ, Legacy GT, and Forester XT models. Our selection includes essential Subaru engine components for EJ20, EJ25, and FA20 engines, making it easy to complete maintenance, engine rebuilds, or high-performance Subaru engine builds. Browse a wide range of engine assembly parts including Subaru timing belts, timing belt kits, idler rollers, tensioners, engine hardware, oils, fluids, and other critical components designed to keep your engine running smoothly and reliably. Whether you're performing routine Subaru maintenance, installing a new short block, or completing a full Subaru WRX or STI engine build, these parts help ensure proper timing, durability, and long-term engine performance. IAG Performance carries engine assembly parts from some of the most trusted names in the performance and motorsports industry, including ARP, ATI, Cosworth, Gates, and more. These brands are known for producing high-quality components that support everything from daily driving to high-horsepower Subaru builds. If you're building or maintaining a Subaru EJ or FA engine, IAG Performance offers the engine assembly parts, timing components, and hardware needed to keep your WRX, STI, BRZ, Legacy GT, or Forester XT running at its best.

Long Blocks
Long Blocks
Subaru Long Block Engines

Long Blocks

Find Subaru long block engines at IAG Performance for 2002–2023 WRX, STI, Legacy GT, and Forester XT models. Our inventory includes complete EJ25 and FA20 long blocks along with engine installation kits and supporting components needed to complete your Subaru engine replacement or build. Whether you're installing a replacement engine in your Subaru WRX or STI or upgrading to a built long block for improved durability and performance, IAG Performance offers the engines and install parts needed to complete your project.

Short Blocks & Internals
Short Blocks & Internals
Subaru Short Blocks & Internals

Short Blocks & Internals

Shop Subaru short blocks and internal engine parts at IAG Performance for 2002–2023 Subaru WRX, STI, Legacy GT, and Forester XT models. Our selection includes high-quality Subaru engine internals designed for EJ20 and EJ25 engines, making it easy to complete everything from routine engine repairs to full Subaru WRX and STI engine rebuilds. Browse a wide range of Subaru short blocks and internal engine components including forged pistons, connecting rods, crankshafts, engine bearings, case halves, and other critical bottom-end parts. Whether you're rebuilding a factory EJ25 engine, upgrading to stronger forged internals, or planning a high-horsepower Subaru engine build, these components provide the strength, durability, and reliability needed for both street and track applications. IAG Performance offers complete Subaru short blocks along with the internal engine parts required to support a reliable rebuild or performance upgrade. From forged pistons and performance rods to crankshafts, bearings, and engine cases, our inventory includes the parts Subaru owners trust when building WRX and STI engines. We carry Subaru engine internals from many of the most respected brands in the performance industry, including ACL, Brian Crower, CP Pistons, Carrillo, Clevite, Eagle, IAG Performance, JE Pistons, K1 Technologies, Killer B Motorsport, King Engine Bearings, Manley Performance, and Subaru OEM components. Whether you're repairing a damaged engine, refreshing a high-mileage motor, or building a fully forged Subaru short block for serious power, IAG Performance provides the engine internals and components needed to support your WRX, STI, Legacy GT, or Forester XT engine build.

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