WG9725540002 Muffler Assembly

The WG9725540002 muffler assembly is a key part of the exhaust system in HOWO series trucks. Its main job is to quiet down the noise from the engine's exhaust and guide the hot exhaust gas the right way-so it doesn't make too much noise pollution, and it keeps the other parts of the truck from getting damaged by that hot gas.

This muffler's made with good-quality steel that can handle high heat, plus a lining that doesn't rust easily. It can take the hot exhaust (which gets up to 600-800°C) and the force of the gas flowing through it without rusting, cracking, or bending out of shape-so it works steadily for a long time.

Also, the sound-deadening parts inside are designed really well. They muffle the noise well, but they don't block the exhaust too much. That way, the engine doesn't lose too much power, and the truck drives well and feels comfortable to ride in.

① High-Temperature & Corrosion Resistance: The main body is good heat-resistant steel, and the inner lining doesn't rust easily. It can take exhaust temps up to 600-800°C for a long time.

② Good at quieting noise: Inside, there are layers of baffles and sound-absorbing cotton. That design works well to turn down the noise from the engine's exhaust.The noise reduction effect meets national vehicle noise standards, reducing the impact of exhaust noise on drivers, passengers and the surrounding environment, and improving driving comfort.

③ Low Exhaust Resistance The internal airflow channel is optimized to minimize exhaust resistance while ensuring noise reduction. It avoids excessive loss of engine power caused by blocked exhaust, and helps the truck maintain good power performance and fuel economy.

WG9725540002 Howo Muffler Assembly is mostly used in the exhaust system of Howo series trucks. Here are the specific ways it's used:

① Heavy-duty commercial trucks: Like those big Howo trucks that carry things long distances or drop off goods around town? This muffler helps make their exhaust not so loud-so the truck doesn't go against the rules for how noisy road vehicles can be.

② Special vehicles built on Howo chassis: Stuff like Howo dump trucks, mixer trucks, and engineering vehicles-all the ones that use a Howo base frame. These vehicles often work in residential areas or construction sites with strict noise requirements, and the it can effectively control exhaust noise to meet on-site construction and environmental protection standards.

The main part's made with seamless steel pipes welded together-all the welds are smooth, no rough edges. That makes the whole thing stronger, and it stops air from leaking through any bad welds. The outside's also painted with stuff that can handle high heat, which makes it harder to rust and better at keeping heat in (or out).

The flange that connects it to the exhaust pipe is thick aluminum alloy. The holes in it are right where they need to be, and the surface is smooth-so it fits tight against the truck's exhaust pipe flange, which means less exhaust leaking out. Plus, there's a high-heat gasket on the flange to seal it even better. That way, exhaust gas can't leak and burn the parts around it.

Q: Which Howo truck models is this muffler assembly suitable for?

A: This WG9725540002 Howo muffler assembly works for most heavy-duty trucks under the Howo brand. But here's the thing-different Howo models can have different engine sizes, different exhaust system setups, and even different emission standards. So before you buy, it's a good idea to give the seller your truck's chassis number, engine model, and what year it was made. That way, they can check for sure if this muffler will fit your specific truck.

Q: How often does the muffler assembly need to be replaced?

A: Under normal use (regular inspection, avoiding collision and contact with corrosive substances), the service life of this muffler assembly is usually 3-5 years. If the truck often works in harsh environments (such as long-term driving on roads with high salt content, frequent exposure to heavy rain and humidity, or frequent overload operation), the service life may be shortened. It is recommended to check the muffler for rust, cracks and air leakage every 6 months, and replace it in time if faults are found.

Q: Will this muffler assembly affect the engine's power performance?

A: No. This muffler assembly adopts an optimized internal airflow channel design. While achieving efficient noise reduction, it strictly controls the exhaust resistance. The resistance value is within the range of the original vehicle's exhaust system design, so it will not cause excessive loss of engine power, and can ensure that the truck maintains good power performance and fuel economy.

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