The SINOTRUK-HOWO 7 is the light, compact lower-part option in the TRUEMAX concrete mixer truck range — built for the small end of the market where vehicle size and operating economics matter more than peak payload. Constructed on the SINOTRUK-HOWO 7 chassis model ZZ5128F3915 with a Yuchai YC4D140-33 engine at 102 kW in Euro II form, it carries 3 to 5 m³ drums on a 4×2 drive layout, in a 6,755 mm overall length that fits where the bigger 9–10 m mainstream trucks struggle. Rated load sits between 7,500 and 12,500 kg, and total laden weight stays under 11,500 kg — light enough for restricted-axle and bridge-limit routes that exclude heavier trucks.
That compact, light-duty profile makes the HOWO 7 chassis the natural pick for city streets and small projects. Small ready-mix operators serving downtown and historic-quarter pours, building contractors working in narrow access where a 12 m³ truck cannot turn, rural and remote contracts where short-haul deliveries do not justify a heavy truck, and entry-tier export markets where Euro II is current spec and operating cost dominates the purchase decision — all four use cases line up around the same vehicle. The chassis is supplied by TRUEMAX with the matched 3–5 m³ CTM3 drum and full upper-part assembly, built and tested at the TRUEMAX factory in Haining, with the same complete after-sales programme — three-minute response, 24-hour solutions, remote intelligent service — within a line exported to more than 120 countries.
1. 6.7 m compact vehicle length — Overall length of 6,755 mm — over 2 metres shorter than the mainstream 6×4 mixer truck and 4 metres shorter than the largest 8×4. Turns in tighter circles, reaches alleys and tight building-site gates that bigger trucks cannot, and parks at the batching plant in less space.
2. Light kerb weight — 8.7 to 11.5 tonnes total — Total laden weight stays between 8,755 kg and 11,500 kg with a 3–5 m³ drum filled, well under the heavier mainstream trucks. That keeps the vehicle within axle-load limits that restrict heavy trucks on minor roads, weight-restricted bridges and historic-centre access roads.
3. Yuchai YC4D140-33 engine, 102 kW — The 4-cylinder Yuchai YC4D140-33 at 102 kW is the economy-tier engine choice — lower fuel consumption per kilometre than the mainstream WP10, lower maintenance cost, and well matched to the modest payload. Yuchai is one of China's largest commercial-engine makers with a global parts network.
4. 4×2 drive — simple, low operating cost — Two-axle 4×2 layout is the simplest commercial chassis configuration and the cheapest to operate. Lower tyre count (6 wheels), simpler driveline, lower maintenance bill than a 6×4 or 8×4 truck. For 3–5 m³ work, the additional driven axles of a heavier configuration are not needed.
5. Euro II emission specification — Euro II is the standard tail-gas standard on this chassis — fully compliant for many emerging-market regulations and a lower upfront cost than the higher emission specifications. For markets that require it, the mainstream SINOTRUK platform offers Euro III to Euro V.
6. Carries the CTM3 drum — Matched with the TRUEMAX CTM3 upper part — 4.45 m³ geometric drum / 3 m³ payload — and supports drum sizes up to 5 m³ within the chassis's rated load. Standard upper-part hardware (Eaton/PMP hydraulic pump and motor, 520JJ wear plate drum, water tank and chute) is built up on the chassis at the TRUEMAX works.
7. Air-bag seat and air-conditioned cab as standard — The cab comes with an air-bag driver's seat and air conditioning fitted as standard equipment — same standard cab fitment as the heavier TRUEMAX chassis range, so a light truck is not a stripped-down one.
8. Customisable chassis and full TRUEMAX service — Beyond standard, the chassis specification can be customised to your destination market — transmission, axle ratio, fuel-tank size, electrical and lighting kit. Pre-sale consultation, on-site commissioning of the assembled truck, driver and operator training, three-minute service response, 24-hour solutions, and remote intelligent service through working life.
