the only important thing to note is the nature of the fasterner at the cat end of the header pipe AND your chasiss number

is the triangular 3 holes flange fixed ...welded to the end of the headr or is it free to spin.

you must match this part with the other side...on the cat.

that is pretty much it.

i think a 91 is a spin flange not fixed. but check to be sure. if it is a spin flange you will note 1/4 inch space between the 2 pipes filled up with steel donut gasket.



these are your choices:

Name: Header Pipe

Part Code: 3514976

Brand: Starla/Walker

Description: Header pipe for any 240 B230F engine 85-88 all, 90-91 without EGR (4drs from chassis # 376881 to # 454200, 5dr from chassis # 839751 to # 907400) (O2 sensor located in catalytic convert, not header pipe).

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Name: Header Pipe

Part Code: 3514145

Brand: Miller

Description: Header pipe for any 89-93 240 with EGR and spin flange to catalytic converter.

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Name: Header Pipe (no EGR)

Part Code: 3536202

Brand: Starla/Walker

Description: Header pipe for any mid 91-93 240 (4 dr from ch. # 454201, 5dr from # 907401) model without EGR. Volvo quality Starla.