4 Packs/set Piston Rings Set 4x Compatible For BMW 120i 320i E46 E90 E91 E92 E81 E87 N46 N45 NN42 N40 Engine 2.0
Compatible engines: N40B16A, N42B18A, N42B20A, N45B16A, N46B20A, N46B20B, N46B20C, N46B20E, N46B20D, N46B20C
OE#: 11 25 7 562 457
Replacement OE#: 11 25 7 541 469 / 11 25 7 556 435
Cross references: GOETZE:08-425700-00, KOLBENSCHMIDT:800073510000, :081RS001010N0, PERFECT CIRCLE:47907680, WILMINK GROUP:WG1147894
Specifications:
- Size: STD 0.00 (no fit cylinder expand)
- Cylinder bore: 84.00mm
- Ring thickness: Top 1.2mm / Second 1.5mm / Oil rail 2.0mm
Package includes:
- Piston ring set for 4 cylinders (complete rings per cylinder) x1 pack (fits 4-cylinder engine)
Benefits:
- Restores piston-to-cylinder sealing to recover lost compression and engine power.
- Reduces oil consumption and smoke by restoring oil control rings.
- Improved fuel economy and lower blow-by for cleaner crankcase conditions.
Notes:
- Designed as a direct replacement for listed for BMW engines and cross-reference part numbers. Ensure compatibility by verifying engine code and cylinder bore before installation.