-14%
Click to zoom in
SKU: 3142-12
GSC Power-Division Toyota 2JZ (1991-2005) Manganese Bronze Intake Valve Guide Stopper Style - Set of 12
GSC Power-Division manganese bronze intake valve guides in stopper style deliver reliable valvetrain performance for Toyota 2JZ-GE and 2JZ-GTE engines. This set of 12 fits DOHC cylinder heads in models like Supra GS300 SC300 IS300 and Aristo with precise OEM replacement sizing. Engine builders choose them for extended guide life under high heat boost and RPM in modified setups.
Key Features
- Manganese Bronze Material: Resists wear and galling while dissipating heat faster than OEM phosphor bronze for sustained performance in turbocharged 2JZ builds.
- Stopper Style Design: Built-in flange sets exact installation depth to avoid sinking into aluminum heads during press-in process.
- Precision Machining: Tight tolerances match 2JZ intake valve stems 7.98mm for smooth operation and reduced oil consumption.
- Complete Intake Set: 12 guides cover all intake positions on inline-6 DOHC head simplifying full valvetrain refresh.
- Direct Fit Replacement: Bolts into stock or ported 2JZ heads without modifications for quick rebuilds.
Product Notes
- Intake guides only. pair with GSC 3143-12 exhaust guides for full set.
- Inspect head guide bores for wear before installation.
- Ships in protective foam-lined box to prevent damage.
Installation Notes
- Professional installation recommended.
- Requires valve guide driver tool and freeze-fit method on head at -100F or lower.
- Compatible with stock Toyota heads and GSC performance valves.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1993-2002 | Toyota | Supra | Base / Turbo |
| 1991-2005 | Lexus | GS300 | Base |
| 1992-2001 | Lexus | SC300 | Base |
| 2001-2005 | Lexus | IS300 | Base |
| 1991-2005 | Toyota | Aristo | 2.5GT / 3.0G / 3.0V |
| 1996-2001 | Toyota | Chaser | JZX100 Tourer V / 3000GT |
| 1996-2004 | Toyota | Mark II | JZX100 / JZX110 3000GT |
Why Choose GSC Power-Division?
- Proven in 1000hp 2JZ drag cars and endurance racing.
- Manufactured with aerospace-grade CNC equipment.
- Every set tested for dimensional accuracy.
Frequently Asked Questions
-
Q: Will these fit VVTi 2JZ-GTE heads?
A: Yes fits all 2JZ-GE non-VVTi VVTi and 2JZ-GTE heads from 1991-2005 with identical guide bore specs. -
Q: How does manganese bronze compare to OEM?
A: Manganese bronze offers higher strength and better heat transfer reducing valve guide wear in high-performance applications. -
Q: What is the warranty?
A: GSC provides limited lifetime warranty on manufacturing defects when installed by certified shop.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Foam-lined cardboard box 5 x 3 x 1 inches
- Weight: 0.3 lbs
GSC Power Division
GSC Power Division camshafts and valvetrain parts for turbocharged import engines are stocked at Black Ops Auto Works. Shop camshafts, valve springs, retainers, valves, and head studs engineered for the Toyota 2JZ, Nissan RB26 and VR38DETT, Mitsubishi 4G63, Subaru EJ257 and FA20, and Honda K20 platforms. Every product is filterable by engine code, cam grind, and application so the correct part ships the first time. Black Ops Auto Works carries 407 GSC Power Division SKUs across camshaft, valvetrain, and engine internal categories. What This Brand Covers GSC Power Division is a specialist engine internals brand focused on camshafts, valve springs, retainers, and valves engineered specifically for high output turbocharged import engines. The catalog is built around specific engine codes rather than complete vehicles, which means the same part often applies across multiple chassis that share an engine platform. Brand Focus GSC Power Division designs valvetrain components for engine...
View GSC Power Division Products
Valve Guides
Valve Guides for LS, Hemi, Honda K-series and D-series, Toyota 2JZ, Subaru EJ and FA, Mitsubishi 4G63 and 4B11T, Nissan KA and VQ, BMW, Porsche, and Hyundai applications are stocked at Black Ops Auto Works. Shop bronze valve guides, manganese bronze valve guides, intake guides, exhaust guides, oversize guides, cylinder head rebuild parts, and valvetrain hardware for proven street, drag, road course, and high horsepower engine builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 208 valve guide SKUs across the fitments and build levels enthusiasts actually use. What Valve Guides Cover Valve guides locate the valve stem in the cylinder head so the valve seals, moves smoothly, and transfers heat correctly. This collection includes manganese bronze, bronze, standard-size, and oversize guides for performance cylinder head service. Intake and exhaust guide material Material, wall t...
View Valve Guides Products
Valves & Components
Valves and valvetrain components for import, domestic, and performance engine platforms are stocked at Black Ops Auto Works. Shop intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, and lash caps for Toyota 2JZ and Supra, Honda K-Series, Nissan RB and SR20, BMW B58 and S58, Subaru FA20, Ford Coyote, and GM LS platforms. Every part is filterable by year, make, model, and engine so builders and tuners can confirm fitment before ordering. Black Ops Auto Works carries 1,391 valvetrain SKUs from proven performance brands. What This Category Covers Valves and valvetrain components manage airflow into and out of the combustion chamber and keep the valvetrain sealed and stable at high RPM. This collection spans intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, lash caps, and cam follower shims. Why the Valvetrain Matters for Pe...
View Valves & Components Products