The Jumbo’s appeal starts behind the seats, but the buying decision should include what goes behind the cab. A bag and jacket may benefit from extra cabin room; a tall crate needs a clear bed at the height where the crate actually sits.
Rather than repeat a mild-lift shopping list, this guide treats cabin space and cargo shape as one decision. It is a research-based planning exercise, not a test of a particular S510P.
Measure the cargo shapeHijet Jumbo planning: use the exact vehicle and its documents.
- FLOORRecord the endpoints
- FULL HEIGHTCheck every obstruction
- LOAD LIMITWeight + verified restraint
Fitting in the bed does not establish carrying capacity.
Read the Dimension Labels, Not Just the Largest Number
Daihatsu’s current Japanese Hijet page identifies a Jumbo length of 1,670 mm from the guard frame to the tailgate. That measurement has named endpoints. Do not silently treat it as every possible usable floor length, or apply the current page to every production year.
When looking at a used truck, ask for its matching catalog or manual and measure the actual load space. Added boxes, racks and liners can change the useful envelope. Photograph the tape and both endpoints, not just a number written in a message.
Try Three Different Cargo Shapes
| Your load | What to check on the actual truck |
|---|---|
| A tall crate or machine | Clear space at its full height and width, including the area nearest the cab. |
| A low, long item | The entire support path, obstructions and a verified restraint arrangement. |
| Several small cases | Combined weight, access order and how each item will be secured. |
Fitting is only the geometric part. The truck’s own load limits and proper restraint still apply. A lower recess or an open gate is not permission to carry an unsupported or unsecured load.
Give the Cabin the Same Practical Test
With the vehicle safely parked, set the seat for your driving position and place your usual light personal gear where you expect to keep it. Check seat movement, belt access and the rearward view. Repeat with a passenger if you normally carry one.
The current Daihatsu page lists an overhead shelf for Jumbo grades and cautions that storage must not interfere with driving or rearward visibility. Use the manual for the specific vehicle and the load limit for each storage feature. Extra room is not a substitute for securing belongings.
Decide What a Custom Part Would Actually Fix
Write one sentence describing the problem before naming a part. “My documents get wet” points toward storage. “The bed is awkward to unload” calls for examining the load and access. Neither problem establishes a need for taller suspension.
If you still want an exterior change, separate appearance, fitment and mechanical consequences. Ask for the exact product number, production range and installation requirements. Leave the purchase until the truck’s condition and intended load have been assessed.
Questions for a Distant Seller
Please send the chassis and production details, the catalog matching this truck, and photos showing the clear bed dimensions at floor level and above the front obstruction. Please also show the cabin with the driver’s seat in a normal position and identify any added racks, boxes or suspension parts.
These pictures help establish layout, not import eligibility or legal road use. North American readers should check those questions separately before pursuing a purchase. For styling context rather than fitment approval, see our KLC OFF BEAT article.
Sources and Scope
- Daihatsu: current Hijet interior and load-space information
- NHTSA vehicle import guidance
- EPA vehicle and engine import guidance
Research-based editorial guide reviewed September 23, 2026 with AI assistance. This is not a hands-on vehicle test, an inspection, a quotation, or vehicle-specific legal or technical advice. Manufacturer references describe the versions shown on those pages, not every used truck bearing the same name.