HKS Stopper Type Head Gasket

2022–Present Toyota GR86 / Subaru BRZ FA24 2.4L

Part #: 23001-AT005

Overview

The HKS Stopper Type Head Gasket is a high-performance sealing solution designed specifically for naturally aspirated FA24 engines found in the Toyota GR86 and Subaru BRZ from 2022 onward. This gasket is engineered to enhance engine compression and improve sealing integrity, making it an excellent choice for enthusiasts seeking to optimize their NA setups. Whether you're rebuilding your engine or aiming to increase performance, this gasket provides a reliable and precise seal that supports your vehicle's power and efficiency goals.

Designed with the performance enthusiast in mind, the stopper type gasket features a high compression ratio design that helps support increased engine compression, which can contribute to improved throttle response and overall engine performance. Its thin profile of 0.7mm ensures minimal clearance loss while maintaining excellent sealing capabilities, making it suitable for high-revving, naturally aspirated applications.

Key Features

The HKS Stopper Type Head Gasket offers several technical advantages tailored for high-performance NA engines:

• Constructed with a high-quality, durable material that ensures reliable sealing under increased compression pressures.
• Thinner design at 0.7mm compared to traditional grommet type gaskets (which are typically 0.8mm to 1.2mm), allowing for increased compression ratios without sacrificing sealing performance.
• Engineered with a stopper design that prevents gasket blowout during high-load conditions, ensuring consistent sealing even under spirited driving or engine tuning.
• Optimized surface grinding considerations during overhaul and piston pivoting to maintain proper gasket thickness and sealing integrity.
• High sealing performance is achieved through precise manufacturing and material selection, reducing the risk of leaks and ensuring long-term durability.
• Designed specifically for FA24 engines, ensuring perfect fitment and compatibility with OEM and aftermarket components.
• Ideal for engine rebuilds, performance upgrades, or applications where increased compression is desired for better power output.
• Supports high-performance NA setups, helping enthusiasts maximize their engine's potential without compromising reliability.

Construction & Design

The HKS Stopper Type Head Gasket is crafted from premium materials that combine strength and heat resistance, ensuring reliable performance under demanding conditions. Its stopper design incorporates a high-strength sealing edge that prevents gasket deformation or blowout during high compression or spirited driving. The gasket's thin profile of 0.7mm is carefully engineered to increase compression ratios while maintaining proper piston-to-head clearance, which is critical for engine longevity and performance.

The manufacturing process emphasizes precision and consistency, with surface grinding and quality control measures ensuring each gasket meets strict standards. The gasket's design takes into account the large-diameter bore piston pivoting and surface finishing during overhaul, ensuring a perfect seal and minimal surface irregularities. This attention to detail results in a gasket that not only seals effectively but also contributes to the overall reliability of your engine rebuild or upgrade.

Installation & Fitment

The HKS Stopper Type Head Gasket is a bolt-on component designed for straightforward installation during engine rebuilds or head gasket replacements. Its precise dimensions and high-quality manufacturing ensure a direct fit on FA24 engines in the Toyota GR86 and Subaru BRZ from 2022 and later models. No special modifications, cutting, or drilling are required, and the gasket is compatible with OEM and aftermarket components designed for the FA24 engine. Proper torque specifications and installation procedures should be followed to ensure optimal sealing and performance.

• Designed for easy installation during engine rebuilds or head gasket replacements.
• No cutting, drilling, or special tuning required.
• Compatible with OEM and aftermarket components for FA24 engines.

What's Included

• HKS Stopper Type Head Gasket (0.7mm thickness)
• Installation instructions (if provided by manufacturer)

Ideal For

• Performance enthusiasts seeking to increase engine compression and power output
• Engine rebuilds for FA24-powered Toyota GR86 and Subaru BRZ
• NA engine tuning and modifications
• Reinforcing sealing integrity during high-performance applications