Description
Part Number: BC3903
Brian Crower Manganese Bronze Exhaust Valve Guides (6.6mm)
Engineered for extreme thermal stability and superior wear resistance in high-performance Honda/Acura non-VTEC cylinder heads.
Product Overview
The Brian Crower BC3903 exhaust valve guide set is precision CNC-machined from premium manganese silicon aluminum bronze alloy. Specially developed for high-rpm, forced-induction, and extreme race environments on Honda B18A, B18B, B20B, and H23 engines, these guides deliver optimum heat transfer, reduced stem friction, and exceptional resistance to galling under elevated exhaust temperatures.
Key Features
- ☑ Manganese Silicon Aluminum Bronze: Provides exceptional lubricity and thermal dissipation compared to factory cast iron guides.
- ☑ Precision CNC Machined: Built to exacting tolerances to maintain accurate valve alignment and stem-to-guide clearances.
- ☑ High Thermal Endurance: Eliminates stem galling and seizing under intense motorsport combustion temperatures.
- ☑ Direct Cylinder Head Fitment: Designed for seamless press-fit installation into standard Honda/Acura guide bores.
- ☑ Complete Pack of 8: Contains a full set of 8 high-performance exhaust valve guides.
Technical Specifications
| Manufacturer | Brian Crower |
|---|---|
| Part Number | BC3903 |
| Component Type | Exhaust Valve Guides |
| Material | Manganese Silicon Aluminum Bronze Alloy |
| Valve Stem Diameter | 6.6mm (Exhaust) |
| Engine Compatibility | Honda / Acura B18A, B18B, B20B, H23 |
| Quantity | Set of 8 Guides |
What’s Included in the Box
- 8x Brian Crower BC3903 Manganese Bronze Exhaust Valve Guides (6.6mm)
As an official UK stockist for Brian Crower motorsport components, JP Racing supplies authentic race engine hardware backed by technical advice and prompt UK delivery.
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