Ensure stable mounting with the Profleet Washer Mounting Isolator, a durable replacement for Ott 53574840, designed for Ott Spotter Yard Trucks. This washer, measuring 4.0 inches x 4.0 inches x 4.0 inches, provides reliable support and resists wear in harsh conditions. Compatible with cross-references like Autmnn 53574840 and S-29542, it offers easy installation, making it ideal for fleet maintenance to reduce downtime and costs.