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Regular Price: $6.71 - Instant discount: $1.01 = $5.70
Product Fitment:
2013-2026 Subaru BRZ
2017-2026 Toyota 86 / GR86
2013-2016 Scion FR-S
2022-2026 Subaru WRX
The GSC Power-Division Manganese Bronze Intake Valve Guide is a precision-machined, high-performance valve guide designed for the FA20 and FA24 engines found in Subaru WRX, BRZ, and Toyota 86 platforms.
This version is a +0.001” oversized “stopper style” guide, used when the cylinder head has worn valve guide bores and needs a tighter fit. Made from manganese bronze alloy, this guide provides excellent wear resistance, heat dissipation, and lubricity — perfect for high-performance or forced induction builds.
Oversize +0.001” Outer Diameter – Ideal for heads with worn or honed bores
Stopper Style Design – Ensures positive location and stability in the head
Made from Manganese Bronze – High strength, thermal conductivity, and low wear
Improves Valve Stability & Lifespan – Reduces stem wear under high temps & RPM
Precision Fit – Machined to exacting tolerances for professional-grade rebuilds
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