SKU: 2301-RM006 | UPC: 4957266643099
HKS 89-99 Eagle Talon TSI 4G63BT 1.2mm Stopper Head Gasket (86mm Bore/8.6 CR)
The HKS 1.2mm Stopper Head Gasket (2301-RM006) fits 1989-1999 Eagle Talon TSI models with the 4G63BT turbo engine. This gasket uses a 86mm bore design tuned for 8.6 compression ratio to handle high cylinder pressures in boosted applications. It delivers consistent sealing for reliable power gains in DSM performance setups.
Key Features
- Stopper Ring Design: Solid stainless steel stopper surrounds the combustion chamber to resist head lift and seal extreme boost levels up to 40psi.
- Multi-Layer Steel Build: Three-layer construction with durable stainless steel core offers reusability and long-term reliability in racing conditions.
- 1.2mm Thickness: Compressed height maintains exact 8.6 CR on stock pistons for balanced power and detonation resistance.
- 86mm Bore Sizing: Matches stock and light overbore 4G63 blocks for precise cylinder head alignment.
- Nitrile Rubber Beads: Enhanced outer sealing prevents coolant and oil leaks under high heat cycles.
Product Notes
- Confirm engine bore measures 86mm prior to installation.
- Pair with ARP head studs for maximum clamping force.
- Store in dry conditions to preserve rubber sealing layers.
Installation Notes
- Professional installation recommended.
- Machine cylinder head and block surfaces flat to 0.002 inches.
- Torque in three stages using M12 head bolt pattern sequence.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1994 | Eagle | Talon | TSi Turbo AWD |
| 1990-1994 | Plymouth | Laser | RS Turbo AWD |
| 1990-1994 | Mitsubishi | Eclipse | GSX Turbo AWD |
| 1995-1999 | Mitsubishi | Eclipse | GSX Turbo AWD |
| 1989-1999 | Eagle | Talon | TSi 4G63BT Turbo |
Why Choose HKS?
- Proven in Japanese motorsports since 1973.
- Engineered for turbocharged 4G63 platforms worldwide.
- Factory-direct tolerances ensure leak-free operation.
Frequently Asked Questions
- Q: Will this gasket fit 2G Eclipse GSX models?
A: Yes, it installs directly on 1995-1999 Mitsubishi Eclipse GSX with 4G63T engines using 86mm bore. - Q: What materials are used in construction?
A: Three-layer stainless steel core with stainless stopper ring and nitrile rubber for combustion sealing. - Q: Does installation require head milling?
A: Resurface to OEM flatness specs. no milling needed if maintaining 8.6 CR with stock pistons.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Flat protective envelope 12in x 12in x 0.5in
- Weight: 0.35 lbs
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