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Engines and Components› Cylinder Heads and Components

Tomei

Multi-Layer Steel Head Gasket for EJ20 Single AVCS

$120.00 $108.00 Save $12.00

SKU: TA4070-SB01D

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 multi-layered steel component designed for Subaru EJ20 Single AVCS engines. Its stainless steel construction offers efficient heat distribution and dissipation, contributing to improved reliability and durability under high stress. This gasket helps maintain optimal engine sealing and can assist in adjusting the compression ratio based on its thickness.
Show original supplier description
The Tomei 93.5mm bore, 1.5mm thick head gasket is engineered for Subaru EJ20 Single AVCS engines, offering increased engine durability and greater heat resistance. Constructed from multi-layered stainless steel, this gasket ensures efficient heat distribution and aids in cooling, which significantly improves reliability and reduces the risk of a blown head gasket. Its natural high tensile qualities enhance the rigidity of the cylinder head-to-cylinder block joint, minimizing the chances of engine warping under severe stress loads common in high-power applications. This head gasket plays a crucial role in maintaining the highest precision possible in high-performance assembled engines. Tomei machines all their engine components to enhance airflow and ensure proper fitment and seal, falling within strict tolerances to prevent catastrophic engine failure. The thickness of the gasket can be used to adjust the compression ratio, allowing for final tuning to achieve the target compression. Fitment information indicates compatibility with Subaru Impreza WRX 2002-2005 models and specifically lists 2013-2014 Subaru WRX STI Base models. The product description notes that this item fits a ton of vehicles, and encourages users to search the full fitment list using the provided search bar if their vehicle is not immediately visible.

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-SB01D
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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