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Engines and Components› Connecting Rods and Components

STI

Connecting Rod Assembly

$120.75 $84.77 Save $35.98

SKU: 12100AA181

In Stock
In Stock
Ships by Aug 4
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30 Days Return
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Description

The STI engine connecting rod is a genuine factory component engineered for 2.5L turbocharged Subaru engines, including various Baja, Forester, Impreza, Legacy, Outback, and WRX models. As a critical internal engine part, it ensures proper reciprocating motion and durability for high-stress turbo applications. This part replaces previous part number 12100AA180. Please be aware of specific fitment limitations; while compatible with many turbo configurations, it does not fit all model years or trims. Specifically, this part is noted as not compatible with the 2017 Subaru STI. Always verify your specific vehicle build and engine code to ensure compatibility with your existing internals.

MIA's Description

The STI engine connecting rod is a genuine replacement component designed for 2.5L Subaru turbocharged engines.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandSTI
Part Number12100AA181
CategoryEngines and Components

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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