HKS 2301-RM007 1.6mm stopper head gasket 4G63T
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HKS 89-99 Eagle Talon TSI 4G63BT 1.6mm Stopper Head Gasket (86mm Bore/8.3 CR)

HKS
HKS2301-RM007
00874596006643
Head Gaskets
5 Units In Stock - Ships Next Business Day
$ 320.00
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$ 320.00

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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