Don't know your E24's from your E36's?

Not sure if that's a M20 engine or a M30 engine under the hood?

These tables will help sort it out for you.

CHASSIS	YEARS AND MODELS
E9	2500CS	2800CS	3.0 CS
E10 (114)	1600	2002	2002Tii
E12	530i	528i thru 81
E21	320i	323i 77-83
E23	7 series	733i	735i	745i	728i 78-87
E24	6 series	630	633	635Csi	M6 77-88
E28	5 series	528e	533i	535i	M5	518i 82-88
E30	3 series	318i	325e	325i, is, ic	84-91 (93 on Convertibles)	M3 thru 91
E30/16	325ix
E31	8 series	90-on
E32	7 series	735i	735il	750il 88-94	il models = E32/2
E34	5 series	89-96	525i	530, 535i	M5	540
E36	Newer 3 series 92-on	318i	318is	325i, is, ic	328i, is, ic	M3 95-on
E38	7 series	95-on
E39	5 series	97-on	528i	540

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ENGINE CODE	ENGINE TYPE	YEARS AND MODELS
M20	2 valve 2.0, 2.3, 2.5, 2.7 liter 6 cylinder	320i/6	323i	325i	325e	528e
M30	2 valve 2.8, 3.0, 3.3, 3.5 liter 6 cylinder	528i	535i	630	633	635	733i
		735	745	2500	2800	3.0S	3.0SI
M44	4 valve 1.9 liter 4 cylinder	Z-3	318i 96-on
M50	4 valve 2.5 2.8 liter 6 cylinder	325i	540i	328i	535i
M60	4 valve 3.0 4.0 liter V-8	530i	540i
M62	4 valve 4.4 liter 8 cylinder	740i 95-on	540i 97-on
M70	2 valve 12 cylinder	750il 850i
S14	4 valve 2.3 liter 4 cylinder	M3 thru 91
S38	4 valve 3.5 liter 6 cylinder	M5 E38	M6 E24
S50	4 valve 3.0 liter 6 cylinder	M3 95
S52	4 valve 3.2 liter 6 cylinder	M3 96-97
M21	TurboCharged Diesel 6 cylinder	524Td