Genuine Honda Valve Cover Gasket OEM 12341-PR3-000 – B16 / B18 (B-Series)

Genuine Honda Valve Cover Gasket OEM 12341-PR3-000

Honda OEM 12341-PR3-000 is a genuine valve cover gasket designed for Honda B-series engines. Its role is to ensure proper sealing between the valve cover and the cylinder head, preventing oil leaks and maintaining a clean, dry engine bay.

This is an original Honda part from official distribution, offering factory-level fitment, correct compression and long-term durability under the operating temperatures typical for B16 and B18 engines. It is especially recommended for engines used in spirited or performance-oriented driving.

Applications – Honda B-series engines

• Honda Civic 1988–1991 – B16A1
• Honda Civic 1992–2001 – B16A2, B18C4
• Honda CRX 1992–1998 – B16A2
• Honda Integra 1997–2001 – B18C6

When should the valve cover gasket be replaced?

Common signs of a worn or hardened valve cover gasket include:

• oil seepage or leaks around the valve cover perimeter,
• burning oil smell in the engine bay, sometimes noticeable inside the cabin,
• oil residue on the cylinder head, gearbox or heat shields.

On B-series engines, it is also worth checking the condition of the valve cover itself (warping is not uncommon) and ensuring the mating surfaces are perfectly clean before installation.

FAQ – Honda OEM 12341-PR3-000 Valve Cover Gasket

Is this a genuine Honda part?
Yes. This is an original Honda OEM valve cover gasket supplied through official Honda distribution channels.

Does it fit all B16 and B18 engines?
Not necessarily. While it fits many B-series engines, there are differences depending on the specific engine version and valve cover design. Always verify compatibility by engine code or VIN.

Is sealant required during installation?
Generally no sealant is needed around the entire perimeter. A small amount may be applied at specific points (such as corners or half-moon areas), according to Honda service manual guidelines.

Oil still leaks after replacement – what could be the cause?
Typical causes include uneven tightening, contaminated sealing surfaces, a warped valve cover or issues with crankcase ventilation (PCV system).