SKU: 3089-12
GSC Power-Division BMW E92 335i N54 3.0L Twin Turbo Manganese Bronze Exhaust Valve Guide Stopper Style – Set of 12
These GSC Power-Division manganese bronze exhaust valve guides deliver reliable sealing and stability for BMW N54 inline-6 engines found in the E92 335i. Engineered in stopper style they lock into place preventing movement during extreme boost and RPM. Ideal for performance builds this set of 12 covers every exhaust valve ensuring consistent power delivery.
Key Features
- Manganese Bronze Material: High thermal conductivity resists heat warping on exhaust side for longer life in turbocharged applications
- Stopper Style Design: Integrates valve seal lip for secure positioning and reduced wear under high valve train loads
- Precision CNC Machining: Matches OEM dimensions for drop-in installation in N54 cylinder heads without alterations
- High Boost Compatibility: Handles 30+ PSI and 8000+ RPM common in modified N54 engines
- Complete Exhaust Set: 12 guides service all exhaust valves on DOHC inline-6 for full valvetrain refresh
Product Notes
- Confirm N54 engine code before ordering as N55 requires different guides
- Pair with GSC valve seals for optimal sealing performance
- Inspect guides during head rebuild for best results
Installation Notes
- Professional installation recommended.
- Valve guide driver tool required for press fit removal and insertion
- Compatible with stock BMW N54 heads and aftermarket porting
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2010 | BMW | 135i | E82 Coupe / E88 Convertible |
| 2007-2010 | BMW | 335i | E90 Sedan / E91 Wagon / E92 Coupe / E93 Convertible |
| 2009-2011 | BMW | Z4 | sDrive35i E89 |
Why Choose GSC Power-Division?
- Proven in drag racing and track N54 builds worldwide
- USA manufactured with rigorous tolerances for reliability
- Focuses on valvetrain components for forced induction engines
Frequently Asked Questions
- Q: Will these guides fit BMW N55 engines?
A: No these are sized specifically for N54 valve stems and exhaust ports N55 uses different dimensions - Q: Why manganese bronze over other materials?
A: Manganese bronze offers better heat dissipation and galling resistance than phosphor bronze making it ideal for hot exhaust valves in turbo setups - Q: What tools are needed for installation?
A: Specialized valve guide puller installer set and micrometer for checking installed height professional machine shop advised
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Compact padded box 5 x 3 x 1 inches
- Weight: 0.45 lbs
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