Steel Intake Valves for 1997-2016 Nissan Patrol TB48 24v 4.8L Engines
NIVN-4070D
Head Diam: 40.00mm (+1.5mm)
Stem Diam: 6.97mm
Length: 100.10mm
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face: Dish
NIVN-4070F
Head Diam: 40.00mm (+1.5mm)
Stem Diam: 6.97mm
Length: 100.10mm
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face: Flat
*Single Valves Are Also Available In The Drop Down Menu Below*
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.
NIVN-4070D
Head Diam: 40.00mm (+1.5mm)
Stem Diam: 6.97mm
Length: 100.10mm
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face: Dish
NIVN-4070F
Head Diam: 40.00mm (+1.5mm)
Stem Diam: 6.97mm
Length: 100.10mm
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Intake
Face: Flat
*Single Valves Are Also Available In The Drop Down Menu Below*
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.