GSC Power-Division Exhaust Valve Guide +0.003" – BMW E92 335i N55 / M3 S55 (2007–2015) – Part #GSC3089.003-1
This +0.003" oversized exhaust valve guide from GSC Power-Division is precision-built for BMW E92 335i and M3 models running N55 or S55 engines. Designed to fit 6mm valve stems, it’s ideal for head work requiring tighter tolerances due to wear or machining. Sold individually for targeted replacements.
Available Sizes:
- Standard: Sold individually or in 12-piece sets (Part #GSC3089)
- Oversized:
- +0.001" (Part #GSC3089.001-1)
- +0.003" (Part #GSC3089.003-1)
Specifications (Standard Reference – GSC3089):
- Total Length: 1.884 in / 47.85 mm
- Outer Diameter: 0.3949 in / 10.03 mm
- Valve Stem Diameter: 6 mm
Notes:
- Ideal for performance builds, rebuilds, or precision head service
- Oversized guides accommodate worn castings or custom machining
- Material and finish not specified by manufacturer
Fitment:
- 2007 BMW 335i E92 N54 (exhaust valve guide, 6mm stem, standard size)
- 2008 BMW 335i E92 N54 (exhaust valve guide, 6mm stem, standard size)
- 2009 BMW 335i E92 N54 (exhaust valve guide, 6mm stem, standard size)
- 2010 BMW 335i E92 N55 (exhaust valve guide, 6mm stem, standard size)
- 2011 BMW 335i E92 N55 (exhaust valve guide, 6mm stem, standard size)
- 2012 BMW 335i E92 N55 (exhaust valve guide, 6mm stem, standard size)
- 2013 BMW M3 E92 S55 (exhaust valve guide, 6mm stem, standard size)
- 2014 BMW M3 E92 S55 (exhaust valve guide, 6mm stem, standard size)
- 2015 BMW M3 E92 S55 (exhaust valve guide, 6mm stem, standard size)
- Compatible with 6mm valve stem diameter
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