SL 500 (129.067) V8-5.0L (119.982) (1996)
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A 2-stage cap is fitted to model 210.
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2-stage cap must be screwed in sufficiently until the lug engages the notch at the coolant expansion reservoir.
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The cap has an additional pressure stage with the result that the system pressure may rise to 2 bar during the engine off heating phase without
coolant flowing out.