Only works on models listed below or in other applications using 15mm hose. Measure first.
This is the hose on the left side of your engine that seems to always rot and leak power steering fluid. If you look closely at it you will most likely see small cracks in the hose. This is the larger size hose used on those early models with power steering from the early 1960's through 1976.
Low Pressure Power Steering Hose for Older Models - 24 inch long x 15mm I.D.
$18.90
SKU:
COM-15MMPSHOSE 
Product Details
This would include the W110, W111, W112, W113, W108, W109, W114, W115, early W116 and early R107. Measure before ordering if you are uncertain (inside diameter of this hose is 15mm).
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$69.50
1977 to 1985 Power Steering ATF Fluid Upgrade Kit w/ Video Instructions
To reduce pump and steering box wear - replace that old automatic transmission fluid with enhanced power steering fluid
NOTE: UPS GROUND SHIPPING ONLY. This complete kit will help you flush the old ATF fluid out of your power steering system and replace it with new high-performance power steering fluid.