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BMW 523i E39 170hp M52B25TU (double VANOS) 1998-2000
Manufacturers
BMW 523i E39 170hp M52B25TU (double VANOS) 1998-2000
CATCAMS sport camshafts for BMW 2.5/2.8 24V M52 double VANOSBMW 323i / 328i E46 1998 - 2000BMW 523i / 528i E39 1998 - 2000BMW Z3 2.3i / 2.8i E36 1998 - 2000References CATCAMS: 1304402, 1304405, 1304406
Set of 6 forged 4340-steel connecting rods for BMW 6-cylinder, 135 mm c-to-c.Brands: ZRP Compatibility: 325i E30, 328i E36, 330i E46, M3 E36 US Engine codes: M20B25, M50B25 no VANOS, M52B28, M54B30, S50B30 US, S52B32 US Bolts: ARP 2000 or L19
Adapter for fitting an oil cooler to BMW M52 and M54 engines. Screws in place of the oil filter housing plug. M22x1.50 inlet and outlet. Reference OCTBMW1.Clearance item: no returns accepted.
Reinforced Athena and Cometic head gasket, in O-Ring and MLS. Sold individually.Brands: Athena, CometicEngines: M52B25TU, M52B28TU, M54B25, M54B30Bores: 84.5 to 87.6 mmThicknesses: 0.69 to 3.56 mmReplaces: 11 12 7 501 304
Set of 12 reinforced exhaust valves for BMW M50 VANOS, M52 and M54.Brands: SUPERTECH, FERREA Engines: M50B25TU, M52, M54, S50B30US, S52B32US Dimensions: 30.5 mm or 31.5 mm head, 6 mm stem Material: stainless steel or Inconel, 1 or 3 grooves
Set of 12 reinforced inlet valves for BMW M50 VANOS, M52 and M54.Brands: SUPERTECH, FERREA Engines: M50B25TU, M52, M54, S50B30US, S52B32US Dimensions: 33 mm or 34 mm head, 6 mm stem Material: stainless steel, 1 or 3 grooves
Kit of 24 reinforced valve springs for BMW M50 VANOS, M52 and M54.Brands: CATCAMS, SUPERTECH, FERREA Engines: M50TU, M52, M54, S50B30US, S52B32US Springs: single or double Contents: springs, upper retainers, lower spring seats depending on kit
Kit of 24 valve guides for BMW M50 VANOS, M52 and M54.Brand: SUPERTECH Engines: M50TU, M52, M54, S50B30US, S52B32US Material: Manganese bronze, inlet and exhaust Dimensions: OD 12.6 mm, ID 6.0 mm, length 43.3 mm
Set of 12 exhaust valve stem seals for BMW 24V six-cylinders.Brand: SUPERTECH Engines: M50TU, M52, M52TU, M54, S50B32, S54B32, S50B30US, S52B32US Material: Viton (FKM)
Set of 12 inlet valve stem seals for BMW 24V six-cylinders.Brand: SUPERTECH BMW engines: M50TU, M52, M52TU, M54, S50B32, S54B32, S50B30US, S52B32US Material: Polyacrylate (ACM)
Set of 14 tri-metal crankshaft main bearing half shells for BMW inline-six M20, M50, M52, M54, S50 and S54 engines.Brands and treatments: ACL Race and King Racing (pMaxKote coating option) Fitments: E30, E34, E36, E39, E46, E60, Z3, Z4 Engine codes: M20, M50, M52, M54, S50, S52, S54 Available sizes: standard to +0.50 mm, increased clearance versions (HX...
Set of 12 trimetal connecting rod half-bearings for BMW inline-six M20, M50, M52 and M54.Brands and treatments: ACL Race and King Racing (optional pMaxKote coating) Compatibility: E30, E34, E36, E39, E46, E60, Z3, Z4 Engine codes: M20, M50, M52, M54, S50B30US, S52B32US Available sizes: standard to +0.50 mm, increased-clearance versions (HX / STDX)
kit of 48 half-moon/valve keys for SUPERTECH 6mm diameter: Number of grooves of your choice
Performance engine parts for the BMW 523i E39 2.5 24V M52B25TU, double VANOS, built from 1998 to 2000.
The head is complete: CATCAMS Sport camshafts 1304402, 1304405 and 1304406 for the double VANOS M52, SUPERTECH and FERREA valves, SUPERTECH guides, valve stem seals, collets and springs in 6mm. The bottom end is limited to ACL RACE and KING RACING tri-metal bearings. The ZRP forged connecting rods on this page have a 135mm centre to centre length and are listed for the M20B25, M50B25, M52B28, M54B30 and S52B32: the 140mm length of the M52B25 sits on the single VANOS 523i page. No forged piston and no head gasket are listed here.
