

Product Fitment:
2002-2014 Subaru WRX
2004-2021 Subaru STI
2005-2021 Subaru Legacy GT
2004-2013 Subaru Forester XT
Improve intake efficiency and lower intake air temperatures with the IAG 8mm Phenolic Spacer Kit—engineered for performance, thermal insulation, and precise fitment.
8mm thick CE-grade phenolic spacer provides excellent thermal insulation
Helps lower and stabilize Intake Air Temperatures (IATs) for improved performance
Raises intake manifold, providing clearance for custom piping or rotated manifolds
A cost-effective upgrade for both street and performance applications
Reduces heat transfer from engine to intake manifold
Supports increased power potential through cooler, denser intake air
CNC-machined from a solid block of phenolic for precision and durability
Includes custom Nitrile gaskets that resist sticking and residue buildup
Gaskets engineered to maintain shape and seal after years of heat cycling
Stainless steel spring pins provide alignment for a perfect fit during install
(2) 8mm Phenolic Spacers
(4) Nitrile Intake Gaskets (2 per side)
(4) Cylinder Head Spring Pins
(8) M8x35mm Socket Head Zinc-Plated Screws
Compatible with IAG V2 & V3 Top Feed TGV housings
If using IAG V1 or similar TGVs, alternate hardware is required (sold separately: Part# IAG-RPL-AFD-3000-HDW-38)
Verify fitment before purchase, as manifold height changes may affect clearance
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