Honda D16Y8 Engine Head Gasket 12251-P2J-004

Honda D16Y8 Engine Head Gasket 12251-P2J-004

Keep your single-cam VTEC running at factory-fresh compression with this genuine Honda D16Y8 engine head gasket 12251-P2J-004. Stamped from multi-layer steel and engineered to Honda’s exacting tolerances, it seals the combustion chamber, oil passages and cooling jackets on every 1.6-liter SOHC VTEC built for 1996-2000 Civic EX, Si (Canada), 1996-1997 Del Sol Si, as well as many CRX and Civic swaps that rely on the popular D-series block.

Why You’ll Want It on Your Build

• OEM dependability: Direct from Honda, not an aftermarket reproduction, so thickness, fire-ring diameter and coolant/oil port geometry match your factory specs for leak-free performance.
• MLS construction: Multiple stainless steel layers with a fluoro-rubber coating resist blow-outs under boost, nitrous or high-RPM abuse far better than the older composite style.
• Proper compression ratio: Preserves the 9.6:1 factory compression designed for the D16Y8’s 127-hp VTEC cam profile, maintaining throttle response and fuel economy.
• Drop-in fit: No guesswork; aligns perfectly with OEM dowel pins and accepts stock or ARP head studs.
• Dyno-proven durability: Thousands of turbo D-series builds trust this gasket past 15 psi when combined with a smooth, flat head surface.

Vehicle Compatibility

• 1996-2000 Honda Civic EX (EJ8)
• 1996-2000 Honda Civic Si – Canada (EJ8)
• 1996-1997 Honda Del Sol Si (EH6)
• Suitable for D16Y8 cylinder-head swaps on D16Y7, D15B, JDM D15B VTEC and other D-series blocks (check bore and deck height).

What’s in the Box

1 × Honda Genuine Parts MLS head gasket, P/N 12251-P2J-004, sealed in factory packaging.

Pro Tips

• Always verify cylinder-head flatness (max 0.05 mm warpage) and clean block deck thoroughly.
• Pair with fresh OEM head bolts or upgraded ARP studs for maximum sealing integrity.
• Lightly mist both sides with brake cleaner just before installation to remove any handling residue.

Installation Snapshot: Intermediate • 3–4 hrs

• Gasket only—reuse or replace bolts separately
• No ECU tune; machining only if head/block out of spec