UF21370 Thermostat Housing---Replaces 310031

Replaces number 310031, 61115

Fits: Jubilee, NAA, 600, 800, 900, 601, 801, 901, 2000-4 cyl., 4000-4 cyl.

Can be used on models with or without powersteering
Has the tab for the power steering belt tightener