F22 & H22 ENGINE NOTES DOWEL:

Reducer Dowel P/N 31307. Two required for head alignment.
The core drill included in our universal M12x1.5 p/n 4800 kit will oversize the head
ALIGNMENT DOWEL. We can provide a special dowel that will accept the new
drilled hole and reduce back down to the original dowel size. When you order for the
p/n 4800 kit, ask to include the p/n 31307 head alignment dowels.
The Smaller diameter measures .550 inches which should be the size of the original dowel.
Check to see if your original head alignment dowel is .550 inches.
The Larger diameter measures .599 inches goes in the block when hole is drilled.
Please mention this p/n 31307 dowel when ordering and we will include 2 with the kit.

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History Info for the H22 blocks.

The H22 motor fits 1993-2001 Prelude
and is also called the Si Vtec motor.
The primary applications of the H engine series were the
fourth- and fifth-generation Honda Prelude and the fifth-
and sixth-generation Honda Accord.
Considered a premium choice amongst hot rodders.
The Honda H engine was Honda’s high-performance “big block”
engine family from the 1990s and early 2000s. It is largely derived
from the Honda F engine and shares many design features.
The F20B, though technically coded part of the F-series family of
engines, was basically a destroked version of the H22A4
It has also enjoyed some success as a racing engine, forming the basis
of Honda’s Touring car racing engines for many years, and being installed
in lightweight chassis (such as the Honda CRX) for use in drag racing.

For this M12x1.5 4 cylinder head bolt we do not make a specific kit for this block.
All we can offer is our M12x1.5 universal head bolt kit p/n 4800 click here.