Brian Crower BC3313 31 mm +1 mm Exhaust Valves for 1JZ-GE/GTE

Vehicle Fitment

• Toyota 1JZ-GE / 1JZ-GTE engines (all years/trims using these engines) - fitment confirmed via Brian Crower official documentation

Features

• One-piece stainless steel exhaust valves with high-strength Stellite friction-welded tips
• Heat-resistant stainless construction ideal for high-boost and high-RPM conditions
• Undercut stem design reduces mass for improved engine response and rev potential
• Swirl-polished valve head finish enhances exhaust flow efficiency
• Oversized +1 mm head (31 mm vs OEM 30 mm) increases flow capacity
• Set of 12 valves - full replacement for a 6-cylinder engine
• Precision CNC machining ensures consistent, exact OEM-style tolerances
• Reliable performance for both naturally aspirated and turbocharged 1JZ applications

Specifications

• Head Diameter: 31.0 mm (+1 mm over OEM)
• Stem Diameter: 5.97 mm
• Overall Length: 98.1 mm
• Material: Heat-resistant stainless steel
• Valve Type: Exhaust, dished face

Included Components

• 12x oversized exhaust valves (31 mm, +1 mm)

Product Description

The Brian Crower BC3313 oversized exhaust valve kit is engineered specifically for Toyota's 1JZ-GE and 1JZ-GTE engines. These valves feature a one-piece stainless steel design with a friction-welded Stellite tip for extreme durability under high-boost and high-RPM conditions.

With a lightweight undercut stem and swirl-polished head finish, these valves improve exhaust flow and reduce reciprocating mass, unlocking smoother performance and higher engine response. The +1 mm larger head (31 mm vs OEM 30 mm) enhances flow capacity and pressure relief.

This full set of 12 valves covers all exhaust ports in your 6-cylinder engine. Fitment is verified via Brian Crower's official documentation. Whether you're tuning a naturally aspirated or forced-induction build, these BC3313 valves offer reliable, high-quality performance for demanding applications.