The Delco dump trailer lineup spans eight distinct models — from the compact, jobsite-nimble D1 all the way to the 21,000 lb DT Triple-Axle Gooseneck. Every model fills a specific role in the professional’s toolkit. This guide walks through the full series so you can find exactly the one your operation needs.
D1 | 7K Bumper Pull — The Compact Workhorse
The D1 is built for daily work in tight spaces. At 7,000 lb GVWR with a 5″ channel frame and scissor hoist system, it fits through residential gates and limited-access jobsites where full-size dump trailers can’t go. The 60″ x 8′ deck and ultra-low deck height make loading fast. Best for landscapers, property maintenance crews, and residential contractors.
D2 | 12K Bumper Pull — The Balanced Build
The D2 steps up to 12,000 lb GVWR on a wider 72″ bed — enough to haul heavier landscape materials or light construction loads without sacrificing maneuverability. Dual 6K electric axles on an 8″ x 13 lb I-beam frame deliver the stability and braking performance commercial work demands. A standard pull-back tarp system keeps loads covered on the road.
D3 | 14K Bumper Pull — Maximum Bumper Pull Capacity
When you need serious payload in a bumper pull package, the D3 delivers at 14K GVWR on an 83″ wide deck with dual 7K electric axles. Three length configurations match volume requirements. Standard 2-foot solid sides contain bulkier materials. Available with rear stabilizer jacks for added stability during dumping.
D4 | 14K Gooseneck — Superior Towing Control
The D4 brings gooseneck stability to the 14K class. With a 10″ x 12 lb gooseneck neck mated to a 25K round coupler and dual 12K spring-loaded jacks, it’s built for long hauls and demanding commercial jobsites where bumper pull towing geometry isn’t adequate. Same 83″ wide deck and 8″ I-beam frame as the D3 — with dramatically improved towing control.
D5 | 14/16K BP Telescoping — Flexibility Built In
The D5 introduces telescoping hydraulic technology in a bumper pull package. The telescoping cylinder provides superior lifting force compared to standard scissor hoists while keeping the footprint compact for transport and storage. Available in 12, 14, and 16-foot configurations — giving contractors flexibility in both capacity and length.
D6 | 14/16K GN Telescoping — Maximum Control, Maximum Flexibility
Combine gooseneck stability with telescoping hydraulic versatility, and you get the D6. An 8″ I-beam frame and 10″ I-beam neck support dual 7K electric axles on a gooseneck coupler rated for 25K. For professional contractors running multi-site operations and demanding consistent dumping performance across variable materials, this is the combination model.
DD | 20′ x 96″ Tandem Dual — Built for Heavy Hauling
The DD is an entirely different category. With a 12″ x 19 lb I-beam frame, dual 10K tandem electric axles, and a 96″-wide bed measuring 20 feet, this is a trailer for large-scale construction, highway projects, and industrial hauling. Six-foot solid sides on the bin contain high-volume material loads. Standard electric tarp kit. Standard 8′ slide-in rear ramps.
DT | 21K Gooseneck — When Capacity Is Non-Negotiable
The top of the Delco dump lineup. Three 7K electric axles deliver a combined 21,000 lb GVWR, paired with an 8″ I-beam frame, 10″ I-beam gooseneck neck, and dual 12K spring-loaded jacks. The DT is for infrastructure projects, heavy construction, and serious commercial material transport where anything less isn’t sufficient.
Which Dump Trailer Is Right for You?
Landscapers and residential contractors: start with the D1 or D2. Commercial construction and demolition teams that need maximum bumper pull capacity: the D3 or D5. Long-haul operators and multi-site commercial contractors: the D4 or D6. Large-scale industrial hauling: the DD or DT. Every Delco dealer can walk you through configurations, custom options, and available lengths to spec the right trailer for your actual workload.
▶ Find your nearest Delco authorized dealer at delcotrailers.com and explore the full dump trailer lineup in person.
