1G 4G37 Flywheel Bolt Search

[Magiceton]

I'm in the process of resealing my 1.8, and only after taking off the flywheel did I discover I can't find the 4g37 bolts online. Will the 4g63 ones work?

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[Drewpy Dawg]

The bolts for the 1.8 are longer (26mm) than the 4G63 bolts. The OE bolts come up as discontinued for me, but JNZ still lists them on their website. Try contacting them. You can also get ARP bolts of the correct length.

 

[DSMPT]

Will the 4g63 ones work?

No. The bolt pitch is the same but the 4g63's. bolt is much shorter. 4g37 has 26mm length bolts.

I can't find the 4g37 bolts online

Many cars have the same flywheel bolts like G54B Starion etc etc and maybe discontinued but I guess it's still available in some place. The part number is MD008839. You should search with the part number.
In case if you can't find them, also Toyota 3S engine flywheel bolts could be used. Like the ones we used to use as extended flywheel bolts for thicker aluminum flywheel or ARP 203-2801. Those are 25mm length.