I can not answer that question without knowing what kind of axles are on your 2014 Keystone Laredo 303TG. If you have Dexter 4,400 lbs axles you will need the Dexter Nev-R-Adjust Brakes item # K23-478-479. If you have Lippert 4,400 lbs axles you'll need the Lippert Brakes item # LC66WD. On the 4,400 lbs axles the brake assemblies are not compatible with other manufacturers.
There's no database that tells me what you have. Sorry I couldn't save you the trouble of crawling under your trailer.... view full answer...
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