The water pump used the engine front cover as its housing, making water pump replacement difficult. The intake manifold was a series of short tubular stubs cast as an integral part of the cylinder head. The heads for 175CD Zenith-Stromberg carburettor had two siamesed stubs (part of the head casting), making them not interchangeable with earlier heads using Dell'Orto DHLA40 or 40DCOE Weber carburetors, whose intake was four individual tubes (also part of the head casting). Exhaust gases were handled either by a cast-iron manifold or a fabricated tubular header, depending on application.