Exhaust Rain Caps

  • Protect the inside of your exhaust from rain, snow, animals etc.
  • Available in 430 Stainless Steel or Mild Steel
  • 316L or 304 Stainless Steel for Marine and Offshore on request
  • High quality construction, quiet operation
  • Sizes from 38mm (1″1/2) to 457mm (18″)

To complete any vertical exhaust system, from the restoration of a classic tractor to a brand new containerised genset, GenCat offers high quality Exhaust Rain Caps, also known as Rain Flaps, Exhaust Vent Caps or Weather Flaps. These Caps are specially designed for silent operation and include a polymide bush to help eliminate cap slap noise while in use.

Available in AISI 430 Stainless Steel, highly polished for a chrome-like finish, or satin black painted FE360 Mild Steel, we are also pleased to offer 316L or 304 Stainless Steel construction for offshore and marine use, contact us for pricing.

Standard sizes are from 38mm (1”1/2) to large sizes up to 457mm (18”) pipe diameter, custom sizes are available on request with a minimum quantity of 10 pcs.

Bulk and trade enquiries are welcome, please contact us for a quotation.

Not to be confused with inferior Rain Caps, these caps are manufactured using high quality materials and to high quality standards, each cap is inspected before being packed for shipment.

Pricing and Quotations

For pricing or a written quotation, please contact us with your requirements.

Customer Reviews

“The rain cap I ordered has been fitted to my 1951 vintage Kelvin engine which powers my narrow boat, the product quality is outstanding, life is now much better as I don’t have to keep eating soup in order to get the right size cans to place over the exhaust stack”

Mild Steel Rain Cap, Jerry Parker

“Excellent product, much better than the description & well worth the money”

Stainless Steel Rain Cap, eBay Customer