Coil Replacement Kit for Mercedes Vito RWDEngineering may be required. The Coil Replacement Kit comes with: 2 x BOSS Extreme 2600 Series Double Bellow Airbags 4 x brackets (2 upper & 2 lower) Mounting Hardware Quality SAE J844 Government Approved Airline Dual Schrader Valves Mounted in Stainless Panel Instructions for fitting Boss Extreme series airbags are rated at 2600lb or 1186kg per side and have been government approved tested to over 750psi. All Boss airbags are manufactured by us and