Porsche 911 G Valve guides / head rebuild
911 (G-series) · 1974–1989 · Engine · #8 most-needed for this chassis
OEM part number
90110432151 Exhaust Valve Guide (1st replacement, 9x13.08mm) · source: fcpeuro.comOE number as printed on the cited source. Numbers can vary by model year and market; confirm by VIN.
Why owners need it
Chassis-specific known weak point / high-demand repair item
Typical price seen: $300-$3000 (USD, from research 2026-10-12; varies by brand and condition).
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Request a huntOther most-needed 911 G parts
Clutch kit (disc, pressure plate, release bearing)Clutch slave & master cylinderInner/outer tie rodsSway bar end links & bushingsChain tensioners (Carrera pressure-fed upgrade)Engine/transmission mountsCIS (SC) / Motronic DME relay (3.2)915 shifter bushings / G50 clutchTorsion bar / suspension bushingsHeat exchangers / SSIsShocks/strutsStrut / shock mounts