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SKU: 2092-12
GSC Power-Division Toyota Supra 2020+ BMW Z4 B58 2020+ BMW M3/M4 S58 2021+ Chrome Polished 30.1mm Head Intake Valve Set of 12
GSC Power-Division 2092-12 chrome polished intake valves feature a 30.1mm head diameter for Toyota Supra A90 BMW Z4 G29 B58 and BMW M3 G80 M4 G82 S58 engines. This set of 12 delivers increased airflow and heat resistance for boosted applications. Engine builders choose these for reliable high-RPM operation in street and track setups.
Key Features
- 30.1mm Head Diameter: Boosts intake flow over stock for more power across the RPM range in B58 S58 cylinder heads
- Chrome Polished Finish: Improves heat dissipation reduces friction and resists carbon buildup during extended high-boost runs
- One-Piece Forged 4340 Chromoly: Provides strength to handle 30+ psi boost and 9000+ RPM without fatigue or failure
- Precise Specs 143.95mm Length 7.98mm Stem: Direct drop-in replacement matches OEM geometry for easy install in Supra Z4 M3 M4 heads
- Lightweight at 96.8g per Valve: Cuts reciprocating mass by 7-10g vs stock lowers valve train stress extends spring life
Product Notes
- One-piece design eliminates stem-to-head failure common in multi-piece valves under race conditions
- Pair with GSC valve springs for full valvetrain upgrade in high-performance B58 S58 builds
- Set includes 12 intake valves protective packaging prevents damage during shipping
Installation Notes
- Professional installation recommended.
- Valve head requires 30.1mm guide clearance confirm during head disassembly
- Compatible with OEM retainers and seals no special hardware needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2024 | Toyota | Supra | GR Supra 3.0 B58 |
| 2020-2024 | BMW | Z4 | sDrive30i M40i G29 B58 |
| 2021-2024 | BMW | M3 | Base Competition G80 S58 |
| 2021-2024 | BMW | M4 | Base Competition G82 G83 S58 |
| 2019-2023 | Toyota | Supra | A90 Export B58 |
Why Choose GSC Power-Division?
- Race proven in Supra drag cars and BMW time attack builds worldwide
- Engineered with input from top tuners for B58 S58 reliability under abuse
- Made in USA with tight tolerances exceeding OEM standards
Frequently Asked Questions
-
Q: Will these fit 2016-2019 BMW 340i B58 models
A: Yes GSC 2092-12 fits all B58 cylinder heads including early 340i 440i M240i plus listed Supra Z4 M3 M4 S58 confirm head casting -
Q: What material and finish are used
A: Forged 4340 chromoly steel with swirl polished chrome finish on head and stem for optimal heat transfer and longevity -
Q: What warranty applies and install tips
A: GSC offers 12-month warranty against defects professional install with valve job recommended torque seats to spec
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Foam-lined box 10 x 6 x 2 inches
- Weight: 2.2 lbs
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