Supertech Black Nitride Intake Valve – Set of 8 | 1987-1988 Nissan Silvia S12 RS-X (NIVN-1001-8) Supertech

Nissan CA18DET Black Nitride Intake Valves by Supertech

Supertech intake valves are made exclusively from an enhanced versions of EV8 (21-4N) steel. This is the highest grade of steel available and provides the strength to withstand just about any application.

Features

• Head Diam: 34.15mm(std)
• Material: Stainless Steel 21-4N
• Groove Type: Single Groove
• Length: 88.9mm
• Stem Diam: 5.97mm
• Back-cut angle
• Undercut stem
• One piece forged valve (non-magnetic)
• Magnetic friction welded wafer, Hardened to 52 HRC min
• Black Nitride for superior hardness keeping core ductility
• “Superfinish” valve stem with a surface roughness of about 1/3 of a regular valve

Benefits

• Less Friction
• Better Flow Rates
• Better Sealing
• Improves durability and reduces carbon build up

Applications

• 1987-1988 Silvia S12 RS-X
• 1987-1989 Silvia S12 Grand Prix final edition in Europe
• 1988-mid 1990 Nissan Silvia/180SX S13 (Japanese market)
• 1987-1989 Nissan Bluebird RNU12 SSS ATTESA Limited (Japanese Market)
• 1989-1994 Nissan 200SX RS13-U Europe

What’s In The Box?

• 8 – Intake Valve

Warranty

• Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantability, or fitness for a particular purpose.