PRODUCT DETAILS
Honda R18A/R18Z Valve Cover Gasket - 12341-RNA-A01
Got oil leaking from the top of your R18 engine? Your valve cover gasket's leaking. The Honda R18 valve cover gasket (part number 12341-RNA-A01) seals your valve cover to your cylinder head. When the gasket gets old and hard, it doesn't seal properly and oil leaks out. You'll see oil dripping down the side of your engine or smell burning oil when your engine's hot. Replace your valve cover gasket when you're doing spark plugs, valve adjustment, or any time you pull your valve cover off. Don't reuse old gaskets. They're compressed and they won't seal when you reinstall your valve cover.
Here's What Happens When Your Valve Cover Gasket Leaks
Your valve cover gasket seals the connection between your valve cover and your cylinder head. When the gasket gets old, it hardens and shrinks from heat cycles. Once it's hard, it doesn't compress properly and oil leaks past it. You'll see oil on the outside of your engine around the valve cover. If the leak's bad enough, oil drips onto your exhaust manifold and burns. That's the burning oil smell you're smelling. A leaking valve cover gasket's annoying and it makes a mess of your engine bay. Just replace the gasket.
Replace It Any Time You Remove Your Valve Cover
Any time you're pulling your valve cover off for spark plug replacement, valve adjustment, or any other work, replace this gasket. It's cheap. If you reuse an old gasket that's already been compressed, it's not going to seal properly when you bolt your valve cover back on. You'll have an oil leak and you'll be pulling your valve cover off again to replace the gasket you should've replaced the first time. Don't do that to yourself.
What You Get
- Honda R18 valve cover gasket
- Part number: 12341-RNA-A01
- Genuine Honda OEM replacement
- Seals valve cover to cylinder head
Fits Your Car
- 2006-2011 Honda Civic DX/EX/LX (8th gen, R18A1)
- 2012-2015 Honda Civic DX/EX/LX (9th gen, R18Z1)
- 2013-2015 Acura ILX automatic (R18Z1)
- 2016-2022 Honda HR-V (R18Z9)
Compatible Engines
- R18A1 (2006-2011 Civic DX/EX/LX)
- R18Z1 (2012-2015 Civic DX/EX/LX, 2013-2015 ILX automatic)
- R18Z9 (2016-2022 HR-V)
Note: Replace this gasket every time you remove your valve cover. Don't reuse old gaskets. They're compressed and they won't seal properly. Clean the gasket surfaces on your valve cover and cylinder head before you install the new gasket. If there's old gasket material stuck on the surfaces, scrape it off carefully. Don't gouge the aluminum surfaces. Don't use sealant or RTV on this gasket. The gasket seals by itself when you torque the valve cover bolts down.