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
Engine
This engine parts collection covers oil catch cans, thermostats, thermostat housings, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, supercharger pulleys, idler pulleys, tensioner pulleys, and engine bay dress-up parts for trucks, SUVs, muscle cars, boosted builds, high-horsepower street cars, and performance vehicles that need better reliability, cooling, airflow, oil control, and under-hood styling. The collection is particularly strong for Dodge Challenger, Charger, Durango, Jeep Grand Cherokee Trackhawk, and Ram TRX platforms running 6.2L Hellcat, 6.4L HEMI, and 5.7L HEMI engines, where oil catch can and cooling upgrades address known OEM weaknesses in the PCV and thermal management systems. Import performance platforms including GM LS-based builds, Chevrolet Camaro, and Corvette applications are also represented through Mishimoto, CSF, and ZPE GripTec product lines. Builders who invest in engine bay organization and reliab...
View Engine Products
Head Components
This collection covers cylinder head components including head gaskets, head studs, and complete head assemblies for performance engine builds and high-output applications, serving vehicle owners and builders who need reliable components for maintenance, restoration, or performance enhancement. Arp head studs, cometic head gaskets, and edelbrock or afr cylinder heads are foundational brands in performance cylinder head work, providing buyers with the confidence that comes from sourcing from recognized suppliers with documented fitment data. Proper head bolt torque sequence and head gasket compression thickness selection directly affect combustion sealing integrity and engine longevity, and selecting the correct specification for the specific application is the most important step before any installation. Whether the goal is restoring OEM function, addressing a worn component, or improving beyond factory performance, this collection addresses each need with confirmed-fit parts. Popul...
View Head Components Products
Head Gaskets
This collection covers cylinder head components including head gaskets, head studs, and complete head assemblies for performance engine builds and high-output applications, serving vehicle owners and builders who need reliable components for maintenance, restoration, or performance enhancement. Arp head studs, cometic head gaskets, and edelbrock or afr cylinder heads are foundational brands in performance cylinder head work, providing buyers with the confidence that comes from sourcing from recognized suppliers with documented fitment data. Proper head bolt torque sequence and head gasket compression thickness selection directly affect combustion sealing integrity and engine longevity, and selecting the correct specification for the specific application is the most important step before any installation. Whether the goal is restoring OEM function, addressing a worn component, or improving beyond factory performance, this collection addresses each need with confirmed-fit parts. Popul...
View Head Gaskets Products
HKS
HKS is a Japanese manufacturer of premium performance parts founded in 1973 that has been at the forefront of turbocharged engine development, producing turbochargers, exhaust systems, engine management, intercoolers, and supporting performance components for some of the most iconic Japanese sports cars ever built. The brand's GT and GTIII turbocharger series, Super Sequential Blow Off Valves, and Racing Suction intake kits are recognized globally as benchmark-quality products that combine Japanese manufacturing precision with decades of motorsport development experience. HKS products are particularly well-known in the Toyota Supra, Mitsubishi Evo, Subaru STI, Nissan GT-R, and Honda NSX communities, where the brand's heritage in building the world's fastest versions of these cars has created a loyal following among enthusiasts who want the best available components. From a simple racing suction kit to a complete GT turbo with intercooler and ECU tune, HKS provides an end-to-end perf...
View HKS Products


