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MARCH MADNESS SAVINGS ARE ON!
MARCH MADNESS SAVINGS ARE ON!

Subaru STI Engine Parts

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IAG 550 2.5L Short Block 2006-2014 WRX / 2004-2021 STI

$4,499.99
$4,499.99 - $4,499.99
$4,499.99
$4,049.99
$4,049.99 - $4,049.99
$4,049.99

IAG 550 EJ25 2.5L SUBARU SHORT BLOCK DESIGNED FOR STRENGTH The IAG 550 Short Block is designed for modified EJ25 Subarus that n...

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IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads 2002-2014 WRX / 2004-2021 STI

$18,749.99 - $18,999.99
$18,749.99 - $18,999.99
$18,749.99
$15,937.49 - $16,149.99
$15,937.49 - $16,149.99
$15,937.49

IAG 1150 LONG BLOCK ENGINE WITH IAG 1150 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT A "DROP-IN" SOLUTION The IAG Perf...

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IAG 1150 2.35L Destroked Long Block Engine w/ IAG 1150 Heads 2002-2014 WRX / 2004-2021 STI

$19,249.99 - $19,499.99
$19,249.99 - $19,499.99
$19,249.99
$16,362.49 - $16,574.99
$16,362.49 - $16,574.99
$16,362.49

IAG 1150 2.35L DESTROKED LONG BLOCK ENGINE W/ IAG 1150 HEADS DROP IN AND DRIVE The IAG Performance hand-built Subaru 11...

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IAG 950 2.35L Destroked Long Block Engine w/ IAG 950 Heads 2002-2014 WRX / 2004-21 STI

$14,599.99 - $14,899.99
$14,599.99 - $14,899.99
$14,599.99
$12,409.99 - $12,664.99
$12,409.99 - $12,664.99
$12,409.99

IAG 950 2.35L DESTROKED LONG BLOCK ENGINE W/ IAG 950 HEADS DROP IN AND DRIVE The IAG Performance han...

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IAG 550 Long Block Engine w/ IAG 550 Heads 2002-2014 WRX / 2004-2021 STI

$9,999.99 - $10,299.99
$9,999.99 - $10,299.99
$9,999.99
$8,499.99 - $8,754.99
$8,499.99 - $8,754.99
$8,499.99

A "DROP-IN" SOLUTION The IAG Performance Hand-Built 550 Subaru EJ25 Long Block Packages are a complete, valve cover to valve cover...

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IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads 2002-2014 WRX / 2004-2021 STI

$12,749.99 - $12,999.99
$12,749.99 - $12,999.99
$12,749.99
$10,837.49 - $11,049.99
$10,837.49 - $11,049.99
$10,837.49

A "DROP-IN" SOLUTION The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover t...

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IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads 2002-2014 WRX / 2004-2021 STI

$13,999.99 - $14,299.99
$13,999.99 - $14,299.99
$13,999.99
$11,899.99 - $12,154.99
$11,899.99 - $12,154.99
$11,899.99

A "DROP-IN" SOLUTION The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover t...

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IAG Performance Stage X Short Block 2002-2014 WRX / 2004-2021 STI

$17,999.99
$17,999.99 - $17,999.99
$17,999.99
$16,199.99
$16,199.99 - $16,199.99
$16,199.99

The CNC Billet Aluminum EJ case seeks to change the Subaru performance tuning market by reinventing the EJ and addressing virtually every weakness ...

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Your Subaru STI was built for excitement, but why settle for stock when you can achieve so much more? WRXDaily’s premium Subaru STI engine parts help you unlock the raw potential of your car. Turn your track days or daily drives into unbeatable experiences.

Whether you’re aiming for peak efficiency or high-octane power, our Subaru WRX STI engine upgrades deliver solutions tailored to your goals. For even greater customization, explore our range of Subaru STI aftermarket performance parts crafted to elevate every aspect of your engine’s performance.

Every part we offer is precision-engineered for seamless integration and maximum impact. From reliable endurance to thrilling power gains, these parts are made to perform. Don’t wait to transform your Subaru into the ultimate performance machine; start your build with WRXDaily’s expertly crafted parts today.