Upgraded Muffler Kit

What is this silencer for and what does it fit?

This Muffler kit from UieaMsio is built for diesel parking heaters. The listing names parking air heaters, air crude heaters for parking, automotive air auxiliary heaters and generator exhaust gases. It is listed as universal fit. That means it is not made for one car make or model.

Does universal fit mean it suits every heater? Not necessarily. The listing gives no pipe diameter. Measure your heater's exhaust outlet and pipe before you order. Then compare the figures with the seller's page or ask the seller.

How does it reduce noise?

The body has a double welded structure with an inward bent design and a U-shaped bend. Inside is a porous sound-proofing layer of sound-absorbing cotton. The bend changes the direction the sound travels in. The layer breaks up its intensity.

How much quieter will it be? The seller gives no decibel figure. One German buyer wrote that it was at least a third quieter than before. A UK buyer said it is very good at reducing exhaust noise. Your result will depend on your heater and your setup.

What is it made from and does it resist heat?

The body is aluminium alloy with a bright surface and no grate. The seller describes it as heat and corrosion resistant. It also has an outer coating. The seller says this gives a longer service life than conventional carbon steel silencers.

There is one caution. A German reviewer said it is not UV stable. They were waiting to see how long it lasts outdoors. If you plan to mount it where it gets direct sun, keep that in mind.

What comes in the box and how hard is it to fit?

You get one exhaust silencer set. It includes clamps, brackets and screws. The seller says it is easy to install and a direct core change. You will still need basic hand tools to fix the brackets and tighten the clamps.

The silencer is blue. The package measures 21 x 11 x 3 cm and weighs 0.315kg. That is light enough to hang from a bracket on most vehicle underbodies. Check you have room for the 21 cm length before you start.

Could it cause problems with my heater?

This is the most important question to ask. One 1-star reviewer reported that the inner sound-proofing fleece quickly clogged with soot. They said this raised exhaust back pressure and made their diesel heater cough. When they removed the fleece the silencer became louder again.

Only one of the seven reviews shown on the page reports this. It is still worth knowing. Diesel heaters need a free flow of exhaust gas. Check the silencer for soot build-up now and then. Clean or replace it if you notice rough running.

What do real buyers say about it?

It holds 4.3 out of 5 stars from 20 global ratings. The split is 67% five star and 20% four star. There are no three or two star ratings. 13% of ratings are one star. It is ranked #1 in Car Silencers on Amazon.co.uk and 12,711 in Automotive.

Reviewers describe it as working well and doing what it needs to do. One UK buyer was happy with the purchase. German buyers called it very quiet and good quality. The negative points were the UV concern and the soot clogging.

Does it come with a warranty and can I return it?

The listing states no manufacturer warranty. The brand is UieaMsio and the item is made in China. The model number is D6-K-JRQXYQ and the manufacturer part number is E2.

Returns are covered by Amazon. You get free returns and a 30-day right of return. The item must be new and unused. To return it, go to your orders and start the return. Then select the return method and ship it.

Can I use it on a car exhaust or a generator?

The listing mentions generator exhaust gases and car exhaust systems in its applications. It is mainly aimed at diesel parking heaters. Its small size, 21 x 11 x 3 cm in the package, suggests it is not designed for a full-size engine exhaust.

Is it safe to guess? No. Confirm the pipe size and the exhaust flow rate with the seller before you fit it to anything other than a parking heater. Always fit it where hot exhaust gas can escape safely away from the cabin and fuel lines.