GrimmSpeed 98+ Impreza 2.5L NA / 96-99 Legacy 2.5 NA 8mm Phenolic Thermal Spacer
In response to the demand to extend our Phenolic Spacer lineup to include some of the older subaru models, we now have created intake manifold thermal spacers for Impreza '98 and Legacy '96-'99 2.5L N/A 'Phase 1 engines'. Thermal spacers lift the intake manifold off the super heated engine to lessen the transfer of heat. Both the intake manifold and engine block are aluminum so the high heat transfers very quickly....well these spacers stop that. The cooler the intake charge the more HP and TQ your engine will make. In addition to cooling your intake charge, these will also give you larger intake volume similar to that of a throttle body spacer.
NOTE: When installing on the Impreza Phase 1 you will have to cut your EGR tube in half and insert a heater hose between the the halves of the EGR tube to extend it.
What it does:
Greatly reduces the transer of heat from engine to intake manifold thus reducing heat soak.
One of a kind true Phenolic material, not cutting board material like others.
The cooler your intake temperature is the denser the air is which leads to more power
Like our other thermal spacers we suggest putting oem subaru gaskets on top and bottom of each spacer to allow proper sealing. You can buy these on our online store as well for much cheaper than the dealership.
This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov