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BMW N52B25 Repair Kit (2.5L)
BMW N52B25 Repair Kit (2.5L)
BMW N52B25 Repair Kit (2.5L)
BMW N52B25 Repair Kit (2.5L)
BMW N52B25 Repair Kit (2.5L)
  1. BMW N52B25 Repair Kit (2.5L)
  2. BMW N52B25 Repair Kit (2.5L)
  3. BMW N52B25 Repair Kit (2.5L)
  4. BMW N52B25 Repair Kit (2.5L)
  5. BMW N52B25 Repair Kit (2.5L)

Engine Cylinder Head Gasket Repair Kit for BMW 325i, 523i, X3, Z4 (N52B25 2.5L) — (Fits: BMW 2.5L)

An overhaul kit for the BMW N52B25 (2.5-liter naturally aspirated) engine typically includes pistons, piston rings, bearings, and a complete set of gaskets. Key technical specifications for this 2,497cc inline-six engine include an 82.00 mm bore, a 20 mm piston pin, and a compression ratio of either 9.7:1 or 11:1, depending on the specific model year.

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Description

Core Engine Specifications
Engine Type: Naturally Aspirated Inline-6 ​​(2.5L / 2497cc)
Cylinder Bore: 82.00 mm (Standard)
Piston Pin: 20 mm (Diameter) × 46 mm (Length)
Compression Ratio: 9.7:1 or 11:1

Piston Ring Thickness · First Ring (Top Ring): 1.2 mm · Second Ring (Scraper Ring): 1.5 mm
Third Ring (Oil Ring): 2.0 mm

Common Kit Contents and Component Grouping
A standard engine overhaul/rebuild kit typically includes:
Pistons and Piston Rings: Standard-size (STD) piston assemblies; Engine Bearings: Standard-size sets of main bearings and connecting rod bearings; Gasket and Oil Seal Kit: A complete overhaul gasket set, including the cylinder head gasket, valve cover gasket, intake and exhaust manifold gaskets, as well as the front and rear crankshaft oil seals.

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