GrimmSpeed 8mm Phenolic Thermal Spacer Subaru WRX 2002-2014 / STI 2004-2021 | 019001

This GrimmSpeed 8mm phenolic thermal spacer is a game - changer for your Subaru. It fits 2002 - 2014 WRX, 2004 - 2021 STI, 2005 - 2009 Legacy GT, and 2004 - 2013 Forester XT. Cooler intake air means more horsepower. These spacers lift the intake manifold off the engine, reducing heat transfer and heat soak. Made from a unique phenolic material, not cheap cutting - board stuff. With cooler intake air, you get denser air, more power, and better fuel efficiency. Every 5° drop in air temperature boosts power by 1%. It's a direct bolt - on, made in the USA, and sold as a pair. It's recommended to use one OEM intake manifold gasket #14035AA421 on each side, available separately.

Using this GrimmSpeed 8mm phenolic thermal spacer is easy. Just directly bolt it on your Subaru's engine according to the vehicle models it fits. Make sure to use one OEM intake manifold gasket #14035AA421 on each side of the spacer, and you can buy these gaskets separately. As for maintenance, it doesn't need much special care. Just keep it clean and check the bolts regularly to ensure they are tight. If you notice any signs of damage or loosening, replace or tighten them as soon as possible. This way, your spacer will keep working well and help your car get better performance.