-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 is a manufacturer of precision-engineered camshafts, valve springs, and valvetrain components designed for high-performance and competition engines across domestic, import, and diesel platforms. Founded by engineers with deep roots in motorsport, GSC Power Division components are machined to exacting tolerances and heat-treated to survive the demands of forced induction and high-rpm applications that destroy stock valvetrain parts. The brand is particularly well-known in the Mitsubishi Evo, Subaru STI, Nissan RB, and Toyota 2JZ communities where aggressive camshaft profiles are essential for extracting maximum power from turbocharged four-cylinder and six-cylinder engines. Whether building for drag racing, road course competition, or a high-powered street car, GSC Power Division camshafts and valve springs are a proven upgrade path. Popular Upgrades GSC Power Division S1, S2, and S3 camshafts are the most popular selections, with each profile offering progressivel...
View GSC Power Division Products
Valve Guides
Welcome to our Valve Guides collection, where you can find a wide range of high-quality products designed to enhance your automotive performance. Our carefully curated selection includes everything you need to ensure optimal functionality and longevity for your vehicle's engine components. Why Choose Our Valve Guides? Durability: Constructed from premium materials to withstand high temperatures and pressure. Precision Engineering: Designed for a perfect fit, ensuring smooth operation and reduced wear. Performance Boost: Improves engine efficiency and power output, maximizing your vehicle's performance. Wide Selection: Available for various makes and models, tailored to meet your specific needs. Featured Products Explore some of our top-rated valve guides: High-Performance Valve Guides - Ideal for racing and high-performance engines. OEM Replacement Valve Guides - Perfect for restoring your vehicle to factory specifications. Custom Valve Guides - Tailor-made options for sp...
View Valve Guides Products
Valves & Components
Browse all of our valves and valvetrain components at Black Ops Auto Works, including engine valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, lash caps, and related valvetrain hardware for performance builds, engine refreshes, and high-horsepower applications. Whether you are rebuilding a cylinder head, upgrading your valvetrain for higher RPM, or replacing worn valve train components, this collection is built for customers searching for engine valves, valve springs and retainers, valve cover gaskets, performance valve covers, and valvetrain upgrades. Shop Top Valvetrain Brands Find trusted brands in the valve and valvetrain category, including: GSC Power Division Supertech Brian Crower Ferrea Manley Performance Cometic Granatelli Moroso BLOX Racing These brands are known for performance intake valves, exhaust valves, valve spring kits, titanium retainers, valve guides, valve locks, valve seals, billet valve covers, an...
View Valves & Components ProductsLet customers speak for us
Looks pretty nice
Looks pretty nice, pricing was good and the reinforcement is a big plus.
Randy H.
Black Ops Auto Works
I emailed customer service to inquire about when it would be shipped
I emailed customer service to inquire about when it would be shipped. They checked and emailed me with the answer. Customer service is A1
Ralph J.
Black Ops Auto Works
Installation was easy
Installation was easy. The price is good and it looks great on the truck.
Ralph J.
RHO Small Grille Badge
Looks as good as it fits
Looks as good as it fits,
zachary d.
Seibon 70-73 Datsun 240Z OE Carbon Fiber Hood
Nothing like it
I love it great sound and response
Luis P.
Legmaker Dodge Durango HEMI Short Ram CAI 2011-Present 5.7L
Car totally diferent with the whole kit
Car totally diferent with the whole kit. Ive stood next to wide bodies and my car gets more attention at times . Ive bought the kit twice already.
Ding D.
2015-2023 Dodge Charger Carbon Fiber Wind Splitters
Fantastic emblem! Exactly what I was looking for
Fantastic emblem! Exactly what I was looking for. Great quality emblem.
Jacobus S.
Direct Connection Black Metallic Fender Badge
Worked great for my aftermarket hood on my Chrysler 2023 300C
Worked great for my aftermarket hood on my Chrysler 2023 300C. Thanks
Robert G.
Windshield Washer Squirter Relocation Kit Universal
Easy to install and makes car sound even better
Easy to install and makes car sound even better love the winn
Tracy H.
Legmaker Challenger/Charger Hellcat Demon & Redeye Air Intake
Awesome customer support
Awesome customer support. Had multiple issues with fedex and these guys were excellent in helping me sort everything out. The drop springs are great too! I highly recommend
Anonymous
Swift Spec-R Lowering springs Jeep Grand Cherokee 2011-2021
100/100! perfect CF crafted cold air intake for 6
100/100! perfect CF crafted cold air intake for 6.4 jeep .. even makes my AWE exhaust sound even deeper and you cam here this thing sucking when accelerating even at normal speeds🥶
srt.boizzz
Legmaker 392 TH Short Ram Jeep Grand Cherokee SRT 2012-2021
