IAG “Stock” Top Mount Intercooler Coupler Kit - 04-21 STI

If the factory intercooler couplers on your 2004–2021 Subaru STI are starting to show their age, the IAG “Stock” Top Mount Intercooler Coupler Kit is a solid upgrade that is stronger and longer lasting than the OEM couplers for a fraction of the price. Built to handle the heat and boost pressure that come with turbocharged driving, these silicone couplers provide a strong, reliable seal to help keep boost where it belongs and your intercooler system working at its best.

The IAG “Stock” Top Mount Intercooler Couplers are built from heavy-duty 5-ply aramid reinforced silicone that holds its shape under boost and stands up to the high heat of a turbocharged engine bay. Compared to the factory 3-ply couplers, IAG’s sturdy 5-ply design delivers added strength and a more secure connection, even when boost pressure builds.

Top mount intercooler couplers on Subarus are designed to fit tight, which can make installing the coupler on the turbocharger a little tricky. To make the job easier, the IAG “Stock” Top Mount to Turbo Silicone Coupler features a molded clamp holder that helps keep the clamp properly positioned during installation, along with an integrated pry point that gives you a solid place to use a screwdriver or pry bar without risking damage to the silicone.

A quality coupler deserves a quality clamp. That’s why the IAG “Stock” Top Mount Intercooler Coupler Kit includes four heavy-duty lined stainless steel clamps instead of standard worm-drive clamps. These premium clamps feature bead-rolled inner edges for added strength and resistance to deformation, along with a smooth inner liner that helps prevent the clamp from cutting into or damaging the silicone couplers.

The IAG Performance Top Mount Silicone Coupler Kit comes complete with the IAG “Stock” Turbo to Top Mount Intercooler Silicone Coupler, IAG Throttle Body Silicone Coupler, and heavy-duty lined stainless steel clamps for a durable, reliable connection and straightforward installation. Available in black, red, or blue, this convenient kit delivers the durability and performance your STI needs while adding a more aggressive look under the hood.

The IAG “Stock” Top Mount Intercooler Coupler Kit fits the 2004-21 Subaru STI and also fits the 2002-2007 Subaru Impreza WRX and 2004-2008 Forester XT when equipped with an STI top mount intercooler.