Part ST01.00813.MR04 is a pneumatic air spring with a steel cup, engineered for commercial vehicle and trailer air suspension systems with a maximum working pressure of 7 bar, 8 mm fastener diameter and specified tightening torques of 20–68 Nm. Air springs are consumable suspension elements: rubber-cord bellows age under flexing, road salt and ozone, creating constant replacement demand across every operating truck and trailer fleet — one of the most reliable repeat-purchase categories in commercial vehicle parts.
The steel cup design follows OEM-pattern mounting, allowing direct replacement without adaptation. At an indicative price from USD 15 per unit and a minimum order of 200 pieces, the product targets commercial vehicle parts importers, trailer service networks and fleet maintenance operations.
Sourcing direct from the manufacturer rather than through European brand channels typically cuts unit cost dramatically on a part whose specification is fully standardised.
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