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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
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