Engines and Components› Cylinder Heads and Components

Tomei

FA20D/F 89.5mm Bore 1.1mm Head Gasket

$108.00

SKU: TA4070-SB03C

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Tomei head gasket is a direct replacement component designed for Subaru FA20D/F engines. It features a bore size of 89.5mm and a thickness of 1.1mm, constructed from durable stainless material. This gasket offers high heat resistance and helps reduce the risk of failure.

This component can be used to adjust cylinder capacity. A thicker head gasket can increase engine compression ratio, while a thinner one can maintain the stock compression ratio. Tomei recommends utilizing their Compression Ratio Calculator and Stock Engine Data resources when selecting the appropriate head gasket.
Show original supplier description
The Tomei Metal Head Gaskets are engineered replacements for Subaru FA20D/F engines, featuring a precise 89.5mm bore size and a 1.1mm cross-section thickness. These head gaskets offer a direct path to modifying engine compression ratios. By selecting a specific thickness, tuners can either increase the engine's compression ratio for enhanced performance or opt for a thinner gasket to retain the stock compression. Tomei provides valuable resources, including a Compression Ratio Calculator and Stock Engine Data, to assist users in making informed decisions for their build. Key features include enhanced durability, high heat resistance, and a reduced risk of failure due to the material's properties. The package contains two head gaskets, ensuring a complete replacement for the specified engine configurations. These Tomei head gaskets are designed for specific applications including the 2015+ Subaru WRX, 2013-2021 Subaru BRZ, 2017+ Toyota 86, and 2013-2016 Scion FR-S models.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandTomei
Part NumberTA4070-SB03C
CategoryEngines and Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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