GrimmSpeed GRM093114 Top Mount Intercooler Splitter for WRX/STI 2008-2014

Vehicle Fitment

• 2008-2014 Subaru Impreza WRX
• 2008-2014 Subaru Impreza STI

Fitment Notes

• Designed to perfectly mate with the GrimmSpeed top mount intercooler (TMIC)
• Includes 3 intercooler sprayer ports for water/methanol injection setups, if equipped
• WARNING: Cancer & Reproductive Harm - for more information, go to www.P65Warnings.ca.gov

Features

• Purpose-built to maximize performance of GrimmSpeed's Top Mount Intercooler on the 08-14 STI platform - some users report producing 600-700 whp with a properly matched splitter and TMIC combination
• Channels incoming air to hit the top surface of the intercooler directly, promoting better cooling efficiency
• Forces ambient air through the intercooler's dense core rather than around it, critical for effective cooling with high-density cores
• Improves the intercooler's capacity to remove heat and lowers outlet temperatures, enabling more aggressive tuning
• Designed for even flow distribution across the entire core surface
• CAD design and simulation improve both fitment and function
• CNC laser-cut 5052 aluminum construction for durable, lightweight strength
• Durable DuPont black powder-coated finish resists corrosion and wear
• Rubber bulb gasket provides an excellent, long-lasting seal
• Reduces the chances of heat soak, supporting current and future engine modifications

Specifications

• Type: Top Mount Intercooler Splitter (Hood Scoop Splitter)
• Material: 5052 Aluminum, CNC Laser-Cut
• Finish: Black DuPont Powder Coat
• Gasket: Rubber Bulb Seal
• Sprayer Ports: 3, Pre-Installed
• Compatible Intercooler: GrimmSpeed TMIC

Included Components

• 1x Top Mount Intercooler Splitter
• Rubber Bulb Gasket
• Mounting Hardware

Product Description

The GrimmSpeed GRM093114 splitter was developed specifically to unlock the full potential of a GrimmSpeed top mount intercooler on the 08-14 WRX and STI, addressing the reality that a dense, high-performance intercooler core needs properly directed ambient airflow to actually work - some users running this splitter alongside a matched GrimmSpeed TMIC report producing 600-700 whp. Rather than letting incoming hood scoop air bypass the core, this splitter channels it directly onto the top surface for genuinely effective heat rejection.

Designed in CAD for a precise mating fit with the GrimmSpeed TMIC and laser-cut from durable 5052 aluminum, this splitter also includes three pre-installed intercooler sprayer ports for owners running water/methanol injection. With lower TMIC outlet temperatures and reduced heat soak risk, this splitter gives WRX and STI owners meaningfully more headroom for aggressive tuning - a must-have companion for anyone already running a GrimmSpeed top mount intercooler on this platform.