6.35mm to 8mm Bore Rigid Coupling 25mm Length 20mm Diameter Aluminum Alloy Shaft Coupler Connector Silver 4pcs 8mm x 3mm x 300mm you can use this method

you can use this method to expand the M12 thread to M16

for Volvo XC90 2003-2013

it is at the back near the windscreen wipers

5-inch(L*W*H)

6.35mm to 8mm Bore Rigid Coupling 25mm Length 20mm Diameter Aluminum Alloy Shaft Coupler Connector Silver 4pcs 8mm x 3mm x 300mm you can use this methodDescription: Made of high strength aluminum alloy with integrated structure,maintenance free, oil proof and corrosion resistance. Top tight type rigid coupling,high torque with rigidity, low inertia and excellent sensitivity. No rotation gap, elastic action can make up for symmetrical angular misalignment. Suitable for model car, model boat, hardware, mechanical drive situations etc. Specification: Connection Bore Diameter: 1 4 inch to 8mm Total