jksmith

do you need a Special header to fit a b-series in a EF? or will any b series header work?

CRX Toad

Any will do.

ef9_b20

2 peice is better, easier it put in

Crx Jimmy

and a 4-2-1 will fit easier without cutting

EFRue57

i had a 4-2-1 one piece and it fit with no cutting or modifying the front cross member

ryanevansoh

the only problem ppl ever have is the ground clearance. but it depends on the height of ur car

northemt88

stock works great, i had to notch the cross member for a dc header

93civiceg6

Most of whats out there is gonna hang really low so do your research

alexdog69

u can make just about any b-series header work on an EF.

in terms of the normal every day headers people use (i.e. non exotic designs unlike bisimoto or hytech)

the 4-1's will generally require notching your front cross member, and deleting your front motor mount (if you are even using it on a b-series swap...).. they will also generally hang very low and love to get smashed. depending on your mounts it may also want to hit a full size rad.

the 4-2-1's will usually fit best.

the 1 piece sometimes can be a pain to get in and out with other stuff in the way (i.e. radiator).

2 piece is obviously going to be easier to deal with.

in an EF i am a fan of a ported stock CTR or v1.0 ITR header for street use ... the 4-2-1 one with the ~2.5" outlet.

and if you are just wondering about using a stock b series header that comes with your swap, it should be fine.