--- title: What makes the IAG Subaru block so special? description: Why choose IAG Subaru block for your next horsepower build? The best products and warranty with 5250 build is going to last and perform as intended. image: https://www.5250performance.com/hubfs/Snip20190516_1.png --- [![5250 Performance Dyno Shop Colorado](https://www.5250performance.com/hs-fs/hubfs/artwork_5250/Snip20170305_123.png?width=122&height=302&name=Snip20170305_123.png "5250 Performance Dyno Shop Colorado")](https://www.5250performance.com/) - [Home](https://www.5250performance.com) - [About Us](https://www.5250performance.com/about-us) - [Fab](https://www.5250performance.com/fabrication-services) - [Gallery](https://www.5250performance.com/5250-performance-car-gallery) - [Tuning / Upgrades](https://www.5250performance.com/performance-tuning) - [Need a Tuner](https://www.5250performance.com/tuner-page) - [Custom Fabrication](https://www.5250performance.com/fabrication-services) - [Line Card](https://www.5250performance.com/5250-line-card) - [Haltech ECU](https://www.5250performance.com/haltech-ecu) - [Mil Spec Wiring](https://www.5250performance.com/mil-spec-wiring-for-high-performance-cars) - [Repair](https://www.5250performance.com/automotive-repair) - [Current Gallery](https://www.5250performance.com/performance-gallery) - [IAG Subaru Blocks](https://www.5250performance.com/iag-subaru-engine-blocks-colorado) - [Most Popular IAG Blocks](https://www.5250performance.com/our-popular-iag-blocks) - [Dyno](https://www.5250performance.com/dyno-tuning) - [Performance Blog](https://www.5250performance.com/blog) - [Contact Us](https://www.5250performance.com/contact-us) [![Need a Tune?](https://no-cache.hubspot.com/cta/default/532455/e98cee66-8412-4c1b-b0be-676df9108236.png)](https://cta-redirect.hubspot.com/cta/redirect/532455/e98cee66-8412-4c1b-b0be-676df9108236) # 5250 High Performance Dyno Shop Blog ## [What makes the IAG Subaru block so special?](https://www.5250performance.com/blog/what-makes-the-iag-subaru-block-so-special) \[fa icon="calendar"\] Aug 2, 2019 6:00:00 AM / by [Mike Wiener](https://www.5250performance.com/blog/author/mike-wiener) ![](https://www.5250performance.com/hs-fs/hubfs/Snip20171127_8.png?width=35&name=Snip20171127_8.png) - [Tweet](https://twitter.com/share) ## [![Subaru IAG blocks](https://www.5250performance.com/hs-fs/hubfs/Snip20190516_1.png?width=167&name=Snip20190516_1.png)](https://www.5250performance.com/our-popular-iag-blocks)Subaru Engine Replacement | IAG blocks, what makes them special? Engine Replacement | IAG blocks | Turbocharged Subaru's are known for their low cost / high power potential and ease of modifications.  The low cost of the stock engine also means it is not capable of handling large power loads. For anything over about 330hp, we recommend a built motor. IAG motors take the "what if" out of Subaru engine building. - Multiple levels of 'built' available. An engine to fit your budget and power needs. - Available in power ratings over 1000hp. - All components built in-house or built to IAG spec. No off the shelf parts used. - All machine work done in-house - Best warranty in the industry. Why it matters to choose a high quality IAG block and 5250 build: IAG is the largest and most technical Subaru engine builder on the market. This allows them to make fine adjustments as weak points are found. Even though all IAG engine are top notch, each new one is better than the one before. - This ensures that you are getting the best motor for your money. We have been working with Subaru's for over 10 years, before IAG was a major player in quality blocks. Since we have started using IAG motors, the failure rate has dropped significantly. While it’s impossible to get stock street car reliability in a highly modified performance vehicle, choosing an IAG with the 5250 build warranty gets us as close as we can get.   [![IAG Block inquiry](https://no-cache.hubspot.com/cta/default/532455/7860ed4d-5b4a-40a7-9b5f-3786aac3690c.png)](https://cta-redirect.hubspot.com/cta/redirect/532455/7860ed4d-5b4a-40a7-9b5f-3786aac3690c) Topics: [iag Subaru Blocks](https://www.5250performance.com/blog/topic/iag-subaru-blocks) ![Mike Wiener](https://www.5250performance.com/hs-fs/hubfs/Snip20171127_8.png?width=100&height=100&name=Snip20171127_8.png) #### Written by [Mike Wiener](https://www.5250performance.com/blog/author/mike-wiener) ### Subscribe to Email Updates - Recent - Popular - Categories ### Lists by Topic - [Building Horsepower (9)](https://www.5250performance.com/blog/topic/building-horsepower) - [Dyno Tuning Colorado (7)](https://www.5250performance.com/blog/topic/dyno-tuning-colorado) - [Subaru Firewall Clutch Pedal Repair (7)](https://www.5250performance.com/blog/topic/subaru-firewall-clutch-pedal-repair) - 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