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SKU: BC3911
Brian Crower Valve Guides 6.6mm Mitsubishi 4G63 Evo Exhaust 1990-2006 (Set of 8)
Brian Crower BC3911 valve guides feature a 6.6mm inner diameter designed specifically for exhaust valves in Mitsubishi 4G63 engines. These guides fit a range of DSM and Evo models including Eclipse GST GSX Talon and Lancer Evolution for reliable valve stem alignment during high revving conditions. The set of 8 provides complete coverage for the exhaust side delivering consistent performance and reduced wear in tuned motors.
Key Features
- Manganese Bronze Material: Handles high exhaust temperatures with effective heat dissipation and resistance to galling for longer head life
- 6.6mm Inner Diameter: Matches OEM Evo 4G63 exhaust valve specs for exact stem clearance and minimal side loading
- Set of 8 Guides: Covers all exhaust ports on DOHC 4G63 heads simplifying full rebuilds
- Precision Machined Tolerances: Ensures smooth valve action and seals properly with stock or aftermarket seats
- Performance Engineered: Developed for turbocharged 4G63 applications supporting 500+ whp levels
Product Notes
- Intended for exhaust valves only pair with BC3910 intake guides for complete sets
- Inspect valve seats during installation for proper contact and interference
- Packaged securely lightweight at 0.25 lbs fits easily in standard shipping
Installation Notes
- Professional installation recommended.
- Requires valve guide puller and driver tool for press fit removal and insertion
- Compatible with multi-angle valve seats verify head condition before assembly
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1998 | Eagle | Talon | TSi |
| 1990-1994 | Mitsubishi | Eclipse | GS |
| 1990-1999 | Mitsubishi | Eclipse | GST |
| 1990-1999 | Mitsubishi | Eclipse | GSX |
| 1996-1999 | Mitsubishi | Eclipse | Spyder GST |
| 1991-1992 | Mitsubishi | Galant | VR-4 |
| 2003-2006 | Mitsubishi | Lancer | Evolution |
| 2005-2006 | Mitsubishi | Lancer | Evolution MR |
| 2005-2006 | Mitsubishi | Lancer | Evolution RS |
| 2006 | Mitsubishi | Lancer | Evolution SE |
| 1990-1994 | Plymouth | Laser | RS |
Why Choose Brian Crower?
- Engineered for motorsport use in drag road race and rally 4G63 builds
- Consistent quality from CNC machining and material selection
- Backed by decades of experience in Japanese performance components
Frequently Asked Questions
-
Q: Will BC3911 fit Evo 8 and 9 models?
A: Yes fits 2003-2006 Mitsubishi Lancer Evolution including MR RS and SE with 4G63 engines -
Q: What material are these valve guides made from?
A: Manganese bronze for optimal thermal conductivity and durability under boost -
Q: Is there a warranty on Brian Crower valve guides?
A: Covered under Brian Crower limited lifetime warranty against manufacturing defects
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Compact box 4 x 4 x 2 inches
- Weight: 0.25 lbs
Brian Crower
Brian Crower produces high-performance camshafts, connecting rods, valve springs, and valvetrain components for turbocharged and naturally aspirated engine builds. Their Stage 2 and Stage 3 cam profiles and titanium retainers are widely used in Honda, Subaru, and Nissan performance builds. Popular Brian Crower ProductsBrowse the full Brian Crower catalog to find the right upgrade for your application. Every product ships fast with fitment verified against manufacturer specifications. What engines does Brian Crower specialize in?Brian Crower makes camshafts, valve springs, and connecting rods for Honda K-series and B-series, Subaru EJ and FA engines, Mitsubishi 4G63, Nissan SR20 and VQ engines, and other popular performance platforms. What is the difference between Brian Crower Stage 2 and Stage 3 cams?Brian Crower Stage 2 cams offer increased lift and duration over stock for improved mid-range and top-end power while maintaining street driveability. Stage 3 cams are designed for ful...
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