Since 1983, Diesel Specialists, LTD. (DSL) has helped businesses across Houston and Humble keep their diesel engines, generators, and heavy equipment running reliably. We support companies in the energy, transportation, and industrial sectors that depend on well-maintained equipment to keep operations moving.

Our certified diesel mechanics handle everything from diagnostics and in-shop repairs to fast onsite mobile service. With years of hands-on experience, our team approaches every job with attention to detail, safety awareness, and clear communication.

DSL is also an authorized dealer and parts supplier for DEUTZ, ISUZU, JOHN DEERE, REHLKO (Kohler), KUBOTA, PERKINS, YANMAR, JCB, and FPT, providing genuine OEM parts to ensure dependable repairs.

We offer a full range of services including preventive maintenance, diesel engine overhauls, generator service, fleet maintenance, and in-house machining. We also provide annual maintenance contracts (AMC) and flexible service plans to help businesses control maintenance costs and reduce unexpected downtime. Many customers have trusted DSL for decades.