Brian Crower BC3211 31.80 mm Exhaust Valves for Nissan KA24DE Engines

Vehicle Fitment

• Nissan KA24DE-equipped vehicles such as 1991-1998 Nissan 240SX (Base/LE/SE)
• Also fits 1993-2001 Nissan Altima GLE/GXE/SE/XE with KA24DE

Features

• Premium one-piece exhaust valves engineered for performance engines
• Friction-welded Stellite tip for superior durability under high heat
• Heat-resistant stainless steel construction for reliability
• Undercut stem reduces reciprocating mass for improved RPM potential
• Swirl-polished finish promotes efficient airflow and combustion
• Designed to support higher boost and elevated RPM applications
• Precision CNC machining ensures accurate fit and performance
• Ideal for KA24DE head builds and valve train upgrades

Specifications

• Part Number: BC3211
• Valve Type: Exhaust / Dished
• Head Diameter: 31.80 mm (+.5 mm oversize)
• Stem Diameter: 6.94 mm
• Overall Length: 99 mm
• Material: High-grade heat-resistant stainless steel
• Fitment: Nissan KA24DE engines

Included Components

• 8x Brian Crower 31.80 mm Exhaust Valves (BC3211)

Product Description

The Brian Crower BC3211 Exhaust Valve set is a high-quality performance replacement designed specifically for **Nissan KA24DE engines**, found in vehicles like the 1991-1998 Nissan 240SX and 1993-2001 Nissan Altima. Made from premium heat-resistant stainless steel and featuring a friction-welded Stellite tip, these exhaust valves provide superior wear resistance and heat tolerance compared to many stock components - making them ideal for street, race, or boosted builds.

With an undercut stem and swirl-polished finish, the BC3211 valves reduce reciprocating mass for better RPM potential while improving exhaust flow efficiency. The oversize **31.80 mm head diameter** (+.5 mm) supports enhanced combustion and evacuation in modified engines, and the robust construction helps engines tolerate higher stress and temperatures typical of performance tuning. Whether you're refreshing a worn valvetrain or building a high-output engine, these valves deliver reliability and performance where it counts.