For Dubuque John Deere Tractors 420, 430, 320, 330. This spring clamp, also known as a Corbin Clamp, was original equipment in various John Deere tractors including the LP tractors. This spring clamp fits the radiator hose.  This Corbin clamp is expandable to approximately 1.8".   These spring clamps are temperature compensated to maintain a constant good fit under varying temperature loads.  The spring clamps have a semi gold appearance with a zinc dichromate finish. Excellent unpainted appearance. These clamps will restore your Dubuque John Deere tractor to the original clamp style found from the factory.  This spring clamp is found on page 20-2 of the John Deere 430 Parts Catalog.

Equivalent to John Deere Part AR21840R