HKS Stopper Metal Head Gasket - Evo 8/9 4G63 1.2mm

HKS Stopper Metal Head Gasket - Evo 8/9 4G63 1.2mm

HKS SKU: HKS23001-AM004
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HKS stopper-type metal head gasket replaces the factory gasket with a stainless multi-layer design that seals high cylinder pressure on built and boosted engines. A separated bore-stopper structure forms a step around each combustion chamber for a high-pressure seal that resists leakage at high output, while the stainless construction pulls heat evenly into the cylinder head. Offered in multiple thicknesses to set the compression ratio for naturally aspirated, turbo or supercharged builds.

Specifications

Engine Mitsubishi 4G63 (Evo 8/9)
Type Stopper type metal
Bore 86mm
Thickness 1.2mm
Compression 8.5
Part Number 23001-AM004

Shipping

  • Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Special order items follow a lead time we confirm with you individually before the order is committed.
  • Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
  • Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
  • Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
  • Product images may be representative. The SKU and specifications in the listing are what ships.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Returns & Refunds · Warranty
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