Supertech Single Groove Exhaust Valves for 1997-2003 Audi A3 1.8T 20v AEB Turbocharged Engines

AEVI-1103S
Head Diam: 29.90mm (STD)
Stem Diam: 5.94mm
Length: 103.90mm
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Keepers: KPR-6S/7 (Included)

AEVI-1103S-HS
Head Diam: 29.90mm (STD)
Stem Diam: 5.94mm
Length: 103.90mm
Material: Sodium Filled Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Keepers: KPR-6S/7 (Included)

AEVI-1106S
Head Diam: 30.90mm (+1mm)
Stem Diam: 5.94mm
Length: 103.90mm
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Keepers: KPR-6S/7 (Included)

AEVI-1106S-HS
Head Diam: 30.90mm (+1mm)
Stem Diam: 5.94mm
Length: 103.90mm
Material: Sodium Filled Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Keepers: KPR-6S/7 (Included)

*Single Valves Are Also Available In The Drop Down Menu Below*

Supertech manufactures a variety of high performance Inconel valves for many applications. These valves are manufactured from a Nickel base super alloy material (Inconel 751 or Nimonic 80A) this material is chosen because it is designed to withstand very high temperatures. These valves feature a one-piece forging, hardened tip, and our “superfinish” stem. Our Inconel valves are extremely popular choice for turbo and supercharged applications.

Supertech Sodium Filled Valves made of Inconel / Nimonic Alloy offer a significant reduction in valve head temperatures that are required for today’s modern turbo engines. 

A Cooler Valve improves the material strength and durability while allowing the tuner more flexibility and a wider range of spark timing advances. Combine that with an  average weight reduction of 10% and there isn’t a cooler valve on the market