EA855 evo 2.5 TFSI Head Gasket Keychain

This stainless-steel head gasket keychain celebrates the VAG EA855 evo 2.5 TFSI, Audi’s lightweight, turbocharged inline-five RS engine. Introduced as the successor to the earlier EA855, the evo is a 2,480 cc, five-cylinder DOHC engine distinguished by its aluminum block, combined direct/port injection and 400 PS factory output in its original DAZA specification.

Engine Identity

Manufacturer: Audi AG / Volkswagen Group.
Engine family: EA855 evo 2.5 TFSI.
Configuration: Transverse turbocharged inline-five petrol engine.
Cylinder count: Five cylinders, 20 valves, DOHC.
Displacement: 2,480 cc / 2.5 litres.
Production period: 2016 onwards, with the fourth-generation EA855 evo first introduced in the Audi TT RS.
Core engine codes: DAZA, DNWA, DNWB, DXHA and DXHB; applications, emissions equipment and outputs vary by code, market and model year.

Audi’s 2017 self-study program describes the EA855 evo as a five-cylinder inline petrol engine with an aluminum cylinder block, four valves per cylinder, double overhead camshafts, turbocharging and charge-air cooling. It explicitly identifies the 2016-on engine as the fourth-generation 2.5-litres R5 TFSI EA855 evo, replacing the preceding 2.5 TFSI in the TT RS.

Vehicle Compatibility Matrix

Engine code / variant	Vehicle	Chassis	Years	Factory output
DAZA	Audi TT RS Coupé and Roadster	8S / FV	2016–2023	400 PS / 480 Nm.
DAZA	Audi RS 3 Sportback and Saloon	8V facelift	2017–2020	400 PS / 480 Nm.
DNWA / DNWB	Audi RS Q3 and RS Q3 Sportback	F3	2019 onwards	400 PS / 480 Nm.
DNWA / DNWB	Audi RS 3 Sportback and Saloon	8Y	2021 onwards	400 PS / 500 Nm.
DXHA / DXHB	Cupra Formentor VZ5	KM7	2021–2023	390 PS.
High-output EA855 evo derivative	Audi RS 3 performance edition	8Y	2023	407 PS.

The EA855 evo was also used in later TT RS, RS 3 and RS Q3 applications, but customers should verify the engine code before using an engine-gasket profile as a technical identification reference. Audi’s DAZA training specification applies specifically to the TT RS engine and should not be treated as an identical calibration for every evo application.

Why This Engine Matters

The EA855 evo preserves Audi’s modern five-cylinder character while substantially revising the original EA855 architecture. Audi reduced engine mass by 26 kg through changes including the aluminum block, magnesium upper oil-pan section, lighter crankshaft and increased use of aluminum fasteners.

Its 1-2-4-5-3 firing order gives the five-cylinder its unmistakable uneven cadence, while the DAZA specification produces 400 hp from 2.5 liters and 480 Nm from 1,700 to 5,850 rpm. Audi’s 2.5 TFSI was named International Engine of the Year in the 2.0–2.5-litres class for nine consecutive years, underlining the engine family’s enthusiast reputation.

Technical Specifications

Specification	EA855 evo DAZA reference specification
Capacity	2,480 cc / 2.5 litres.
Layout	Transverse turbocharged inline-five petrol engine.
Cylinder head	DOHC, four valves per cylinder, 20 valves total.
Bore x stroke	82.5 x 92.8 mm.
Compression ratio	10.0:1.
Firing order	1-2-4-5-3.
Turbocharger	Exhaust turbocharger with charge-air cooling; maximum boost pressure of 1.35 bar.
Fuel injection	Dual injection: 250-bar FSI direct injection plus cylinder-selective multipoint injection.
Valve technology	Variable inlet and exhaust cam timing, plus Audi valve lift system on the exhaust side.
Stock power	400 hp / 298 kW at 5,850–7,000 rpm.
Stock torque	480 Nm from 1,700–5,850 rpm.
Engine weight	160 kg, DIN GZ specification.
Cylinder block	Rota cast aluminum alloy with atmospheric-plasma-sprayed cylinder-bore coating.
Head gasket	Five-layer construction, with an installed height of 1.3 mm in Audi’s TT RS EA855 evo training documentation.

The figures above are DAZA TT RS reference data, published by Audi of America in July 2017. Later EA855 evo applications can differ: for example, current RS 3 variants develop 500 Nm and the limited RS 3 performance edition produced 407 PS.

Product Details

Stainless-steel head gasket keychain inspired specifically by the EA855 evo 2.5 TFSI cylinder-head gasket.
Designed for enthusiasts of the Audi TT RS, RS 3, RS Q3 and Cupra Formentor VZ5 fitted with the EA855 evo engine.
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.
A compact tribute to Audi’s 2.5-litres, five-cylinder turbocharged RS engine and its unmistakable 1-2-4-5-3 firing order.

FAQ

What is the EA855 evo engine?

The EA855 evo is Audi’s fourth-generation 2.5-litre R5 TFSI turbocharged inline-five engine, introduced in the 2016 Audi TT RS as the replacement for the preceding 2.5 TFSI engine.

Which vehicles use the EA855 evo?

EA855 evo applications include the Audi TT RS 8S, Audi RS 3 8V facelift and 8Y, Audi RS Q3 F3, and the Cupra Formentor VZ5.

How is EA855 evo different from the earlier EA855?

The EA855 evo uses an aluminum cylinder block rather than the earlier engine’s cast-iron block, and Audi lists a 26 kg engine-weight reduction alongside revised injection, thermal-management and valvetrain systems.

Is this a functional head gasket?

No. This product is a decorative stainless-steel keychain based on the EA855 evo head-gasket shape; it is not a replacement engine component.

EA855 evo 2.5 TFSI – Audi RS3, TT RS & RS Q3 Head Gasket Keychain