SKU: 2301-RM007 | UPC: 00874596006643
HKS 1989-1999 Eagle Talon TSi Plymouth Laser RS Mitsubishi Eclipse GST GSX 4G63T 1.6mm Stopper Head Gasket 86mm Bore 8.3 CR
The HKS 1.6mm Stopper-Type Metal Head Gasket supports high-horsepower 4G63T engines in 1989-1999 Eagle Talon TSi Plymouth Laser RS and Mitsubishi Eclipse GST GSX models. This gasket uses exclusive stopper-layer design for reliable sealing and combustion chamber stability at extreme boost pressures beyond stock MLS limits. Precision 86mm bore and 1.6mm compressed thickness target 8.3:1 static compression ratio with stock pistons on 500+ WHP drag and street builds.
Key Features
- Stopper-Type Construction: Provides combustion stability and sealing under cylinder pressures on 1000+ HP 4G63T engines
- 1.6mm Thickness: Delivers 8.3:1 compression ratio using stock pistons for boosted setups
- 86mm Bore: Matches stock bores or up to +1mm oversize cylinders without modification
- Nitrile Rubber Coated Steel: Ensures repeat torque cycles and durability in high-heat high-pressure conditions
- Made in Japan: Backed by HKS limited lifetime warranty to original purchaser against defects
Product Notes
- Fits all 1989-1999 DSM 4G63T 6-bolt and 7-bolt variants
- Designed for 500+ WHP applications with proper supporting mods
- Pair with HKS or OEM head bolts ARP studs for installation
Installation Notes
- Professional installation recommended.
- Resurface deck and head to Ra 30 or better flatness.
- Torque to HKS spec 90-100 ft-lb using ARP studs in stages.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1989-1994 | Eagle | Talon | TSi 4G63T AWD |
| 1989-1994 | Plymouth | Laser | RS Turbo 4G63T |
| 1990-1994 | Mitsubishi | Eclipse | GST 4G63T |
| 1990-1994 | Mitsubishi | Eclipse | GSX 4G63T AWD |
| 1995-1999 | Mitsubishi | Eclipse | GST 4G63T |
| 1995-1999 | Mitsubishi | Eclipse | GSX 4G63T AWD |
Why Choose HKS?
- Proven track record on global 1000+ HP 4G63T drag and street cars
- Exclusive stopper technology handles boost levels stock gaskets cannot
- Precision manufacturing ensures consistent performance and fitment
Frequently Asked Questions
-
Q: Does it fit 6-bolt and 7-bolt heads?
A: Yes fits all 1989-1999 DSM 4G63T 1G and 2G 6-bolt 7-bolt same gasket design -
Q: What torque specs apply?
A: Use HKS recommended 90-100 ft-lb in stages with ARP head studs or HKS OEM bolts -
Q: Is resurfacing required?
A: Yes achieve Ra 30 or better surface finish on block deck and cylinder head
Shipping & Handling
- Method: UPS or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Heavy-duty box with custom foam protection 10x8x2 inches
- Weight: 1.0 lb
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