BMW 2.5CS - 3.0CSL
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11 - Engine
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11 25 651 - Piston rings for one piston-renewing
Measure piston ring clearance in grooves¹.
See technical data
Remove piston rings and measure end gaps¹.
See technical data
When installing:
`TOP` marking on piston ringsmust face upwards,
towards the piston crow.
1 Rectangular section ring
2 Cutaway stepped ring
3 Equal chamfer or penthouse chamfer ring².
² On 3.3 L with tubular spring (Götze company).