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View Full Version : How To: Replace exhaust gaskets on JDM K20A 4-2-1 manifold



DA9_GSR
05-22-2012, 12:31 PM
Hey all,

I bought a JDM K20A exhaust manifold and cat pipe and need to replace the gaskets. If you're in the same boat as me, you already know the parts are a bitch to find. I did some research and I found OEM Honda replacement gaskets from different Honda vehicles to replace them all. The gaskets I'm referring to are:

1- cylinder head exhaust manifold gasket (18115-PRB-A01)
2- upper manifold donut gasket (18229-S7S-003)
3- upper manifold crush washer (18212-SM4-003)
4- lower manifold rear crush washer (18229-S01-X11)

Number 1 (18115-PRB-A01) is found on the 02-06 RSX-S
Number 2 (18229-S7S-003) is found on the 06-11 Civic Si muffler gasket
Number 3 (18212-SM4-003) is found on the 02 Accord downpipe front gasket
Number 4 (18229-S01-X11) is found on the 96-00 Civic SOHC midpipe front gasket

I've ordered them all and will be installing them and adding photos soon. No more scratching our heads in trying to find replacement exhaust gaskets for our JDM K20A exhaust manifolds.

:vtec:

DA9_GSR
05-23-2012, 11:36 AM
Just got all the gaskets from Honda and I can confirm that they all work on the JDM 4-2-1 K20A header!

Wohoo! USDM parts on a JDM piece FTW.