Scam/Fraud Advisory Add HTG to Your Homescreen! Horse Trailer UpkeepNow that it is officially summer, check for wasps in your horse trailer!! If you let your trailer sit for more than 2 seconds, wasps will find it an attractive summer home. ZAP! We found 1 trailers... Sort: Price Manufacturer Year New First Used First Latest Distance (enter zip) Zip: Used '04 Kiefer Built Genesis 5 Horse Trailer (#24705A) National Trailer Source - 23687 IH 10, TX $19,900.00 End of list Use our Advanced Search to find exactly what you want.