Dust Unloader Valve Fits White Oliver 1550 1555 1650 1850 1955 Tractors 157990A Farmall The second number begins with

The second number begins with the letter R

Used as a differential brake pinion shaft seal or as a rear axle outer seal: S

Fits: Massey Ferguson TO35

Industrials: 500

International Harvester used teardrop bulb style lights until early 1953

Dust Unloader Valve Fits White Oliver 1550 1555 1650 1850 1955 Tractors 157990A Farmall The second number begins withQuality Aftermarket: Dust Unloader Valve (Vacuator Valve) (For Dry Air Cleaners) Fits: Oliver 1550, 1555, 1650, 1750, 1755, 1850, 1855, 1950, 1955; 1800 Diesel; White 2 135, 2 155, 2 180, 2 70, 2 85; 2 105 SN: 276762 to 297466 Tractors Specifications Fits 3"" diameter pipe Measure before purchasing Replacement Numbers 157990A, 159088A, 162004A