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GSC P-D Mitsubishi Evo X 4B11T Valve Stem Seal Set (Set of 16) GSC Power Division GSC1010
GSC P-D Mitsubishi Evo X 4B11T Valve Stem Seal Set (Set of 16) GSC Power Division GSC1010
GSC P-D Mitsubishi Evo X 4B11T Valve Stem Seal Set (Set of 16) GSC Power Division GSC1010
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GSC P-D Mitsubishi Evo X 4B11T Valve Stem Seal Set (Set of 16)

GSC1010
GSC1010
Valve Seals
20+ Units In Stock - Ships Next Business Day
$ 69.30 $ 58.91
$ 58.91

SKU: 1010 | UPC: GSC1010

GSC P-D Mitsubishi Evo X 4B11T Valve Stem Seal Set (Set of 16) 2008-2015 Lancer Evolution and Ralliart

GSC Power-Division 1010 valve stem seal set delivers precise sealing for 4B11T engines in 2008-2015 Mitsubishi Lancer Evolution X and 2009-2015 Ralliart models. This 16-piece kit stops oil consumption and valve guide smoke during high-RPM operation. Engineered for performance enthusiasts building reliable power in turbocharged setups.

Key Features

  • Viton Fluoroelastomer Material: Handles 400+ degree F heat to maintain seal integrity under boost pressure
  • Positive Seal Design: Low spring pressure setup allows full valve motion without hang-up or leaks
  • Complete 16-Piece Set: Exact match for 8 intake and 8 exhaust valves on 4B11T cylinder heads
  • Direct OEM Fit: Matches factory valve guide specs for drop-in installation on Evo X and Ralliart
  • Oil Control Precision: Eliminates burning oil past stems for cleaner emissions and consistent power

Product Notes

  • Replace during valvetrain refresh or head work for best results
  • Store in cool dry place to preserve material flexibility
  • Small lightweight package simplifies storage and transport

Installation Notes

  • Professional installation recommended.
  • Remove old seals with air-powered tool to avoid guide damage
  • Compatible with stock heads and GSC upgraded valve springs retainers

This Part Fits

Year Make Model Submodel
2008-2015 Mitsubishi Lancer Evolution
2008-2015 Mitsubishi Lancer Evolution MR
2008-2015 Mitsubishi Lancer Evolution GSR
2008-2015 Mitsubishi Lancer Evolution MR Final Edition
2009-2015 Mitsubishi Lancer Ralliart
2009-2015 Mitsubishi Lancer Ralliart Sportback

Why Choose GSC Power-Division?

  • Proven in drag racing and rally with championship-winning teams
  • Premium materials tested beyond OEM standards for durability
  • USA-made engineering focused on high-boost 4B11T applications

Frequently Asked Questions

  • Q: Will this fit my 2010 Evo X GSR?
    A: Yes part 1010 fits all 2008-2015 Lancer Evolution X models with 4B11T engines including GSR MR and Final Edition
  • Q: What material are the seals made from?
    A: Viton fluoroelastomer compound resists high temperatures and oils better than stock rubber seals
  • Q: Is there a warranty on these seals?
    A: GSC Power-Division provides a one-year warranty against manufacturing defects when installed properly

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Compact cardboard box 6 x 4 x 1 inches
  • Weight: 0.1 lbs

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