Honda - H22A4 Cylinder Head Gasket | 97–01 Prelude | Genuine Honda 12251-P5M-004

Restore your H-series engine with this Genuine Honda Multi-Layer Steel (MLS) Cylinder Head Gasket. Designed specifically for the 1997–2001 Honda Prelude H22A4 DOHC VTEC engine, this OEM gasket provides a precise seal between the cylinder head and engine block to maintain compression, coolant passages, and oil passages.

Manufactured to Honda’s exact specifications, this factory MLS gasket delivers exceptional durability and sealing performance, making it the preferred choice for stock rebuilds, performance engine builds, and OEM repairs. 

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What It Does

The cylinder head gasket:

• Seals the cylinder head to the engine block

• Maintains proper engine compression

• Separates oil and coolant passages

• Prevents combustion gas leaks

• Helps ensure efficient engine performance

• Supports reliable long-term engine operation

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Common Symptoms of a Failed Head Gasket

A failing cylinder head gasket may cause:

• Engine overheating

• White exhaust smoke

• Coolant loss with no visible leak

• Oil and coolant mixing

• Low compression

• Misfires

• Combustion gases in the cooling system

• External oil or coolant leaks

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Features

• Genuine OEM Honda part

• Honda Part Number: 12251-P5M-004

• Factory Multi-Layer Steel (MLS) construction

• Direct OEM replacement

• Precision-engineered sealing surfaces

• Excellent resistance to heat and combustion pressure

• Ideal for stock engines and performance rebuilds

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Vehicle Fitment

Fits:

• 1997 Honda Prelude

• 1998 Honda Prelude

• 1999 Honda Prelude

• 2000 Honda Prelude

• 2001 Honda Prelude

Compatible with:

• Honda Prelude Base

• Honda Prelude Type SH

• H22A4 DOHC VTEC engine

Honda catalogs 12251-P5M-004 as the correct OEM head gasket for all 1997–2001 Prelude H22A4 applications with both manual and automatic transmissions. 

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Why Choose Genuine Honda?

The cylinder head gasket is one of the most critical sealing components in your engine. Genuine Honda MLS head gaskets are engineered to provide the proper compressed thickness, bore size, and sealing characteristics required by the H22A4 engine. Using an OEM gasket helps maintain factory compression, prevents coolant and oil contamination, and delivers long-term reliability for daily driving or high-performance applications.