2.0L 8v - M10B20 with 121 series cylinder head
Manufacturers
2.0L 8v - M10B20 with 121 series cylinder head

Set of 8 trimetal connecting rod half-bearings for BMW four-cylinder M10.Brand and treatment: ACL Race Compatibility: 1502 to 2002 (E10), 3 Series (E21, E30), 5 Series (E12, E28) Engine codes: M10B15, M10B16, M10B18, M10B20 Available sizes: standard (STD)
Set of 4 forged 4340-steel connecting rods for BMW 2.0L 8V M10B20.Brands: ZRP Compatibility: 2002, 320i (E21), 520 (E12) Engine codes: M10B20 Bolts included: ARP 2000 or ARP L19
Wiseco & Wossner forged piston kit for BMW M10B20: bore 89-90.25 mm, RV 10 or 11.8-12:1, pin 22 mm, dome 10.4/28.8 cc, rings included.
Kit of ARP2000 rod bolts and nuts replacing the original fasteners on the OEM rods of the BMW M10B20 engine.Brand: ARP Engine: M10B20 Dimensions: M10 x 1.0 Grade: ARP2000
Kit of 10 ARP 8740 cylinder head studs for the BMW M10B20 four-cylinder (2000, 2002, 320 and 520).Brand: ARP Engines: M10B20 Thread: M12 Grade: 8740
Kit of 10 ARP 8740 crankshaft main studs for BMW M10B20 and S14 engines.Brand: ARP Engines: M10B20, S14B20, S14B23, S14B25 Thread: M10 x 1.5 Grade: 8740 steel
The M10B20 is built differently depending on the head fitted: this category gathers the parts for the 2.0 8-valve block running the 121 series cylinder head.
The head sets the chamber volume and therefore the compression ratio: check which series yours is before ordering pistons.