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The GSC Power Division Mitsubishi Evo X 4B11T Valve Stem Seal Set (Set of 16) is a valve seals for the normalized year, make, and model applications shown below. Match manufacturer part number 1010, engine code, cylinder-head configuration, dimensions, position, material, and package quantity before ordering.
Key Features
- Cylinder-head component identified by position, material, dimensions, quantity, and exact part number
- Stem diameter, head diameter, guide size, seal type, and installed clearance are application specific
- Intake and exhaust components are not interchangeable unless GSC expressly specifies otherwise
- Machining, measurement, and professional cylinder-head assembly may be required
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2006 | Mitsubishi | Lancer | Confirm engine platform, cylinder-head configuration, dimensions, and exact GSC application |
| 2009-2015 | Mitsubishi | Lancer | Confirm engine platform, cylinder-head configuration, dimensions, and exact GSC application |
Specifications
| Brand | GSC Power Division |
|---|---|
| Manufacturer Part Number | 1010 |
| Product Type | Valve Seals |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new GSC Power Division valve seals package identified by manufacturer part number 1010, in the size and quantity stated by the title. Springs, retainers, locks, valves, guides, seals, followers, shims, bearings, fasteners, gaskets, lubricants, and other assembly parts are included only when expressly listed for this exact part number.
About GSC Power Division
GSC Power Division develops performance camshafts, valves, valve guides, springs, retainers, seals, and related valvetrain components for import and domestic engine platforms.
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Frequently Asked Questions
Do these valves or guides install without machining?
Machining requirements depend on the exact cylinder head, component dimensions, oversize specification, and measured wear. A qualified machine shop should inspect and size the parts before assembly.
How do I confirm intake versus exhaust compatibility?
Match the exact GSC part number, position, stem and head dimensions, material, guide size, seal type, and package quantity. Intake and exhaust parts should not be interchanged without explicit GSC guidance.
What clearances must be checked during cylinder-head assembly?
Measure valve-to-guide clearance, installed height, retainer-to-seal clearance, coil bind, valve-to-piston clearance when applicable, and every current GSC and service-manual specification.
Installation Instructions
Follow current GSC Power Division instructions and the vehicle service manual for part number 1010. Have a qualified engine builder inspect the cylinder head and mating components, perform required machining, measure every specified clearance, verify timing and free movement, and use the correct lubrication, fasteners, torque procedures, and clean assembly practices before startup.
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