Early Dodge Brothers radiator caps were generally cog style knurl with a slight dome.  The caps had internal threads to mate to the 2"-18 tpi necks.

Boyce cap number 1560

• Cleveland 
• Dodge 
• Moreland 
• Ford 
• Maxwell Special
• Studebaker 

They were originally offered in a bakelite finish but many of our customer have requested chrome over brass so we offer that finish with or without a hole for the motometer.

Bakelite is a phenol-formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde. The phenol and formaldehyde are derived from coal tar and wood alcohol e.g. methanol.  High costs, complexity of production and a brittle nature caused bakelite to fall out of fashion but we still love the look.  We have achieved a similar finish with an a protective ceramic finish that replicates the looks of the original synthetic resin and can provide costing if anyone is interested. 

This will also fit Cleveland and Moreland Trucks