GSC P-D D16/B18-21/ H23 Viton 6.6mm Seal Valve Stem Seal Kit

SKU: 1041

GSC P-D D16/B18-21/H23 Viton 6.6mm Seal Valve Stem Seal Kit (1986-2000 Honda/Acura)

GSC Power-Division Viton valve stem seal kit delivers precise 6.6mm positive seals for D16 B18-21 H23 engines found in Honda Civic Integra Prelude CRX and del Sol models from 1986 to 2000. These seals prevent oil from entering the combustion chamber improving engine cleanliness and power retention. Direct replacement design ensures easy installation during valve service for reliable long-term performance.

Key Features

• Viton Material: Fluorocarbon construction withstands 400°F heat and resists fuels oils for extended seal life in high-performance applications
• 6.6mm Stem Diameter: Exact match for D16 SOHC B18 DOHC B20 B21 H23 valve stems ensuring zero leaks and perfect seating
• Positive Seal Design: Advanced P-D style grips stem tightly to block oil passage reducing smoke and consumption versus stock nitrile seals
• Complete Kit: 32-piece set with 16 intake and 16 exhaust seals covers full DOHC SOHC head rebuilds
• Precision Manufacturing: CNC-machined for OEM tolerances with reinforced base to handle high lift cams and boost pressure

Product Notes

• Confirm engine code D16 B18 B20 B21 H23 prior to purchase for compatibility
• Inspect valve guides during replacement to avoid premature wear
• Store in cool dry place away from petroleum products

Installation Notes

• Professional installation recommended.
• Remove valve springs and use dedicated seal driver tool for even press-in
• Compatible with OEM retainers springs and GSC upgrades no modifications needed

This Part Fits

Year	Make	Model	Submodel
1986-1989	Acura	Integra	LS
1987-1988	Acura	Integra	LS Special Edition
1986-1989	Acura	Integra	RS
1996-2000	Honda	Civic	CX
1996-2000	Honda	Civic	DX
1990-2000	Honda	Civic	EX
1998-2000	Honda	Civic	GX
1996-2000	Honda	Civic	HX
1996-2000	Honda	Civic	LX
1988-1991	Honda	Civic	RT 4WD
1989-1995	Honda	Civic	Si
1999	Honda	Civic	Value Package
1996-1997	Honda	Civic del Sol	S
1993-1997	Honda	Civic del Sol	Si
1988-1991	Honda	CRX	Si
1995	Honda	Prelude	SE
1992-1996	Honda	Prelude	Si
1992	Honda	Prelude	Si 4WS

Why Choose GSC Power-Division?

• Proven in drag racing and circuit use by top Honda tuners worldwide
• High-volume production with strict quality controls for consistent results
• Engineered specifically for aftermarket cams and high-rpm builds

Frequently Asked Questions

• Q: Will this kit fit a 1993 Civic Si with D16Z6 engine?
  A: Yes it fits all D16 variants including Z6 Y8 and B18 B20 H23 with 6.6mm stems across listed years and models
• Q: How does Viton compare to OEM seals?
  A: Viton offers higher heat resistance chemical stability and sealing pressure for less oil burn in modified engines
• Q: What is the warranty on these seals?
  A: GSC provides a limited lifetime warranty against defects when installed correctly

Shipping & Handling

• Method: Standard ground shipping
• Availability: In stock – ships same or next business day
• Packaging: Compact box 6 x 4 x 1.5 inches
• Weight: 0.25 lbs