FA20 Head Gasket Keychain - Toyota GT86 & Subaru BRZ Stainless Memento

This stainless-steel head gasket keychain celebrates the Toyota FA20, Toyota’s code for the naturally aspirated 2.0-litre flat-four jointly developed with Subaru for the first-generation GT86/86. Subaru identifies this engine as the FA20D, while Toyota uses the code 4U-GSE in some markets; all refer to the same 1,998 cc, D-4S-injected boxer-engine application.

Engine Identity

Manufacturer: Subaru Corporation, developed for the Toyota–Subaru sports-car partnership.
Toyota engine code: FA20; Toyota’s alternate designation is 4U-GSE.
Subaru engine code: FA20D.
Configuration: Front-mounted, longitudinal, naturally aspirated horizontally opposed four-cylinder petrol engine.
Cylinder count: 4
Displacement: 1,998 cc / 2.0 litres.
Production period: 2012–2021 in first-generation Toyota GT86 applications.
Valvetrain: Chain-driven DOHC with four valves per cylinder, 16 valves total.
Fuel system: Toyota D-4S combined direct- and port-injection system.
Valve timing: Variable valve timing on both inlet and exhaust camshafts.

Toyota’s official GT86 specification lists the FA20 as a naturally aspirated, horizontally opposed four-cylinder petrol engine with a 1,998 cc capacity, 86.0 mm bore, 86.0 mm stroke and 12.5:1 compression ratio. Its square bore-and-stroke design is central to the first-generation GT86’s rev-happy 7,000 rpm power peak.

Vehicle Compatibility Matrix

Engine designation	Vehicle	Chassis / market name	Model years	Factory output
FA20 / 4U-GSE	Toyota GT86	ZN6, UK/Europe	2012–2021	197 bhp / 147 kW at 7,000 rpm; 205 Nm at 6,400–6,600 rpm.
FA20 / 4U-GSE	Toyota 86	ZN6, Japan and selected markets	2012–2021	Output varies by year and market; cited Japanese specification: 207 PS at 7,000 rpm and 212 Nm at 6,400–6,800 rpm.
FA20 / 4U-GSE	Scion FR-S	ZN6, North America	2012–2016	Approximately 200 hp / 205 Nm, market rated.
FA20 / 4U-GSE	Toyota 86	ZN6, North America	2017–2020	Approximately 200 hp / 205 Nm, with ratings varying by transmission and model year.
FA20D / 4U-GSE	Subaru BRZ	ZC6	2012–2020	200 DIN hp / 147 kW at 7,000 rpm and 205 Nm at 6,400–6,600 rpm through 2016; later European-market examples are cited at 208 DIN hp / 153 kW and 212 Nm.

Toyota’s first-generation GT86 ran from 2012 to 2021, while market names varied: Toyota 86, GT86 and Scion FR-S all identify versions of the ZN6 coupe. The mechanically related Subaru BRZ uses the ZC6 chassis designation and Subaru’s FA20D engine name.

Why This Engine Matters

The FA20/4U-GSE is inseparable from the GT86, BRZ and FR-S: a compact naturally aspirated boxer engine positioned low and rearward to support the cars’ front-engine, rear-wheel-drive balance. Toyota describes the GT86 as having a low centre of gravity and a 197 bhp 2.0-litre flat-four, linking the engine directly to the car’s driver-focused design.

Rather than relying on turbocharging, the naturally aspirated FA20 uses a 12.5:1 compression ratio, dual AVCS variable valve timing and Toyota D-4S injection to produce 200 hp-class output at 7,000 rpm. GAZOO Racing also entered FA20-powered Toyota 86 cars in the Nürburgring 24 Hours from 2012, adding motorsport significance to the engine’s enthusiast following.

Technical Specifications

Specification	Toyota FA20 / 4U-GSE reference specification
Capacity	1,998 cc / 2.0 litres.
Configuration	Naturally aspirated horizontally opposed four-cylinder petrol engine.
Cylinder count	4
Cylinder block and heads	Aluminium alloy.
Cylinder head	DOHC, four valves per cylinder; 16 valves total.
Bore x stroke	86.0 x 86.0 mm.
Compression ratio	12.5:1
Fuel system	Toyota D-4S combined direct and port injection.
Valve timing	Variable timing on inlet and exhaust camshafts.
Timing drive	Chain driven.
Firing order	1-3-2-4
UK GT86 maximum power	197 bhp / 147 kW at 7,000 rpm.
UK GT86 maximum torque	205 Nm at 6,400–6,600 rpm.
Japanese Toyota 86 reference output	207 PS at 7,000 rpm; 212 Nm at 6,400–6,800 rpm.

Power outputs vary by country, model year and test standard. The 197 bhp UK GT86 figure, 200 hp North American FR-S/86 figure, 207 PS Japanese Toyota 86 figure and later 208 DIN hp BRZ figure should not be presented as one universal FA20 rating.

Product Details

Stainless-steel head gasket keychain inspired by the Toyota FA20 / 4U-GSE / Subaru FA20D naturally aspirated flat-four gasket profile.
Designed for owners and enthusiasts of the Toyota GT86, Toyota 86, Scion FR-S and first-generation Subaru BRZ.
Represents the 1,998 cc, 86.0 x 86.0 mm, D-4S-injected boxer engine used in the first-generation “Toyobaru” coupe.
Finished using our three-stage vibratory polishing process for a smooth, durable metal finish.
Supplied on a plywood display card for gifting, collecting or display.

FAQ

What is the Toyota FA20 engine?

The Toyota FA20 is a 1,998 cc naturally aspirated boxer-four used in the first-generation Toyota GT86/86. It is also known as Toyota 4U-GSE and Subaru FA20D, depending on the manufacturer and market.

Which cars use the FA20 / 4U-GSE?

The naturally aspirated FA20/4U-GSE was used in the 2012–2021 Toyota GT86/Toyota 86, 2012–2016 Scion FR-S and first-generation 2012–2020 Subaru BRZ.

Is this the same engine as the turbocharged Subaru FA20DIT?

No. The GT86/86/FR-S/BRZ engine is the naturally aspirated, D-4S-equipped FA20D/4U-GSE with a 12.5:1 compression ratio. The turbocharged FA20F/FA20DIT uses direct injection, a turbocharger and a lower 10.6:1 compression ratio.

Is this a functional replacement head gasket?

No. This is a decorative stainless-steel keychain inspired by the Toyota FA20 head-gasket shape; it is not an engine-service component.

FA20 – Toyota GT86 & Subaru BRZ Head Gasket Keychain