Intake & Exhaust Valves for Mazda MZR / Duratec 2.0L 2.3L 2.5L Engines
Intake Valves
MAIVN-2301D
Head Diam: 35mm (STD)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Dish
Quantity: 8
MAIVN-2301F
Head Diam: 35mm (STD)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Flat
Quantity: 8
MAIVN-2304D
Head Diam: 36mm (+1mm)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Dish
Quantity: 8
MAIVN-2304F
Head Diam: 36mm (+1mm)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Flat
Quantity: 8
MAIVN-2308D
Head Diam: 37.50mm (+2.5mm)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Dish
Quantity: 8
Exhaust Valves
MAEVN-2301D
Head Diam: 30mm (STD)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish
Quantity: 8
MAEVN-2301F
Head Diam: 30mm (STD)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Flat
Quantity: 8
MAEVN-2304D
Head Diam: 31mm (+1mm)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish
Quantity: 8
MAEVN-2304F
Head Diam: 31mm (+1mm)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Flat
Quantity: 8
MAEVI-2304D
Head Diam: 31mm (+1mm)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish
Quantity: 8
MAEVI-2306D
Head Diam: 32mm (+2mm)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish
Quantity: 8
*Complete Set of 8 Intake and 8 Exhaust Valves*
Our stainless steel intake valves are manufactured from an enhanced version of EV8 (21-4N) steel. We have chosen this material specifically because it’s the highest grade of steel available and provides the strength to withstand just about any application. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for even greater strength at higher temperatures. Our stainless steel valves are one piece forged valves, and depending on the application feature hardened tips, hardened seats, swirl polish, undercut, and our black nitride coating. Our black nitride coated valves feature a harder surface area and a smoother finish, providing less friction and subsequently longer life.
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.
Intake Valves
MAIVN-2301D
Head Diam: 35mm (STD)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Dish
Quantity: 8
MAIVN-2301F
Head Diam: 35mm (STD)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Flat
Quantity: 8
MAIVN-2304D
Head Diam: 36mm (+1mm)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Dish
Quantity: 8
MAIVN-2304F
Head Diam: 36mm (+1mm)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Flat
Quantity: 8
MAIVN-2308D
Head Diam: 37.50mm (+2.5mm)
Stem Diam: 5.48mm
Length: 103.40mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face Type: Dish
Quantity: 8
Exhaust Valves
MAEVN-2301D
Head Diam: 30mm (STD)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish
Quantity: 8
MAEVN-2301F
Head Diam: 30mm (STD)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Flat
Quantity: 8
MAEVN-2304D
Head Diam: 31mm (+1mm)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish
Quantity: 8
MAEVN-2304F
Head Diam: 31mm (+1mm)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Flat
Quantity: 8
MAEVI-2304D
Head Diam: 31mm (+1mm)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish
Quantity: 8
MAEVI-2306D
Head Diam: 32mm (+2mm)
Stem Diam: 5.48mm
Length: 104.70mm (STD)
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish
Quantity: 8
*Complete Set of 8 Intake and 8 Exhaust Valves*
Our stainless steel intake valves are manufactured from an enhanced version of EV8 (21-4N) steel. We have chosen this material specifically because it’s the highest grade of steel available and provides the strength to withstand just about any application. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for even greater strength at higher temperatures. Our stainless steel valves are one piece forged valves, and depending on the application feature hardened tips, hardened seats, swirl polish, undercut, and our black nitride coating. Our black nitride coated valves feature a harder surface area and a smoother finish, providing less friction and subsequently longer life.
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.