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bullet Mufflers
bullet Exhaust Accessories
bullet Exhaust After-Treatment Products
bullet Formed Tubes and Tube Assemblies
bullet Industrial Silencers
bullet Air Tanks


Nelson? Products  

Nelson? Products

Nelson? brand mufflers has been around for more than 60 years and has the distinction of being the highest quality muffler available. Quality is a responsibility we do not take lightly. Design, material, construction, and testing are continually reviewed to ensure that you get the best product possible.

Available Nelson? brand muffler types include:

bullet Absorptive (packed)
bullet Aspirating
bullet Catalytic
bullet Particulate trap
bullet Reactive (non-packed)
bullet Spark arresting
bullet Water trap
bullet Any combination of the above

The material used in the construction of our mufflers is aluminized steel, which can withstand a maximum operating temperature up to 1250? F. Other materials are also available, such as mild steel and stainless steel in various thicknesses.

Body diameters range from 2 to 64.25 inches for round bodies and 1.75" x 4.50" to 12" x 23" for oval-bodied mufflers. Custom diameters are available as are "cup" and "box" style bodies. Length and inlet/outlet configurations can be designed to meet your specific needs, or you can choose from one of our standard line of mufflers.

Special Mufflers
In addition to our standard muffler line, our Nelson? brand special mufflers have been developed to meet your specific needs. We offer both Nelson? spark arresting mufflers and Nelson? aspirating mufflers.

Spark Arrestors
Spark Arrestors capture hot carbon particles from an engine and prevent them from exiting the muffler. Nelson? has the largest number of USDA Forest Service qualified spark arrestors in the world. Our spark arrestors have been qualified for UL (Underwriters Laboratories) approval, military specifications, and many other international requirements.

Aspirators are used extensively on agricultural and off-road construction equipment. We offer a broad standard line, or we can custom-design one for your specific needs. The function of an aspirator is to assist the pre-cleaner and extend air element life. Aspirators are integrated into custom exhaust mufflers or outlet tubes and can be combined with spark arresting capabilities.

Most spark arrestors and aspirators are incorporated into a custom-designed muffler. However, we also offer a standard line of spark arrestors, which have been approved by the USDA Forest Service for both gas and diesel powered engines.


Nelson? Products

Exhaust Accessories
Working closely with original equipment manufacturers, we have developed quality custom accessories to complement our Nelson? brand mufflers and tube assemblies.

Our Nelson? exhaust accessories and components are integrated into complete exhaust systems to meet the most challenging customer requirements. As a manufacturer of mufflers and formed tube assemblies, we can supply aluminized, mild, and stainless steel, as well as finishes such as high-heat paint, zinc, and chrome plating.

Brackets and Hangers
Standard brackets and hangers are available to install pipes and mufflers from 2 to 12 inches in diameter. Styles include universal swivel hangers, mini-swingers, and several rigid hangers and frame-mount brackets. Custom brackets can come in almost any size and shape.

Clamp styles include U-bolt, band clamp, AccuSeal?, wide band clamps, and V-band clamps. Clamp sizes from 1.5 to 6 inches are standard. In addition, non-standard sizes and custom designed clamps with standoffs and integral brackets or shields are available.

Stacks and Tail Pipes
Standard stacks and elbows from 2 to 6 inches (51 to 152 mm) in diameter are available in aluminized and chrome finish with either I.D. slotted or O.D. ends. Dump truck stacks, Pak Stacks, and Monster Stacks are also available. Custom stacks and tail pipes can be made in diameters from 0.75 to 7 inches (19 mm to 178 mm). In addition, you can specify double-wall or insulated construction.

Heat Shields and Guards
Standard heat shields and shield kits are available for tube and muffler diameters from 4 to 10 inches (102 to 245mm). A variety of patterns can be stamped into the metal to display your name or logo. Custom shield designs are used on a wide variety of Nelson? brand original equipment mufflers and pipes.

Rain Caps
We offer standard rain caps, chromed rain caps, and silent rain caps. Caps are available in sizes from 2 to 6 inches (51 to 262 mm).

Add-On Spark Arrestors
Add-on Silent Screen spark arrestors attach to the outlet at the end of the exhaust system and are available in sizes of 0.75 to 1.625 inches. We also offer a "muffler style" spark arrestor, which is available with inlet sizes from 1 to 6 inches. The USDA Forest Service has approved both styles.

Add-On Packed Silencers
Silent Pak silencers can be added to tail pipes from 0.75 to 1.625 inches (19 to 41 mm) in diameter.

Mounting Flanges
Commonly used mounting flanges are available through our catalog. More than 1,000 tooled mounting flanges are available for use on custom pipe and muffler designs.

Connectors and Adaptors
Standard flared connectors are available to fit many heavy-duty engines. Other connectors include expanders, reducers, threaded adaptors, tilt cab connectors, flex tube connectors, and ball-and-socket connectors.


Nelson? Products

Exhaust After-Treatment Products
The day is coming when diesel exhaust systems will include catalytic exhaust mufflers, catalytic converters, and soot filters to help maintain air quality. We can help you prepare for that day.

Through the use of design and analysis tools and our extensive emissions testing facilities, we can help you meet the standards imposed by US and international regulatory agencies.

We offer diesel after-treatment products for a variety of applications, including:

bullet Agricultural
bullet Automotive
bullet Bus
bullet Construction
bullet Lawn and garden
bullet Material handling
bullet Small engine (less than 25 hp)
bullet Truck

Nelson? Products

Industrial Silencers
Our Nelson? brand industrial exhaust silencers quietly out-perform the competition. Quality construction is the reason why.

First, we use heavy-duty aluminized steel, which allows our silencers to operate at a maximum temperature of 1,250? F. Next, we protect them with a coating of rust-inhibiting primer, apply a base coat of high-heat silicone aluminized paint, then bake on the topcoat. This ensures that the paint will maintain its physical properties up to 900? F on aluminized steel and 1,100? F on mild steel, resulting in a tough, long-lasting product.

Silencer Style and Design Options
We offer four configurations of silencers as standard designs:

bullet End in, end out
bullet Side in, side out
bullet Side in, end out
bullet Middle side in, end out

Application Options
We also offer four levels of standard silencers:

bullet Industrial 100 level with 12-18 dBA insertion loss
bullet Residential 200 level with 18-25 dBA insertion loss
bullet Critical 300 level with 25-32 dBA insertion loss
bullet Hospital 400 level with 32-42 dBA insertion loss

Silencers are available with inlet and outlet sizes from 0.75 to 22 inches.



Nelson? Products

Formed Tubes and Tube Assemblies
At Nelson? , being a complete exhaust system supplier means that we build more than just mufflers. We have been bending tubing to go with our mufflers for over 20 years. CNC mandrel bending equipment is used to ensure the quality and accuracy of every tube produced.

Formed Tubes
Our mandrel tube benders allow us to design compound bend round tubing from 0.25 to 6 inches in diameter with multiple bend radiuses available for each tube diameter. This machinery can bend such material as:

bullet Aluminum
bullet Aluminized steel
bullet Mild steel
bullet Stainless steel

You can also choose from a large selection of preformed tubes, including:

bullet Elbows
bullet Medium, heavy-duty, and school bus exhaust systems
bullet Stacks
bullet Straight connectors

Tube Assemblies
We have a dedicated engineering staff as well as CNC mandrel bending equipment and robotic welders to ensure that all our tube assemblies are built to any OEM specification. Both round and rectangular tubing can be used to produce such products as frames for:

bullet ATVs
bullet Golf carts
bullet Lawn and garden equipment
bullet Motorcycles

And, using materials such as aluminum, mild steel, aluminized steel and stainless steel, we can produce other assemblies including:

bullet Air inlet tubes
bullet Brake lines
bullet Brush guards
bullet Coolant tubes
bullet Exhaust header assemblies
bullet Flexible tube assemblies
bullet Heat shields
bullet Insulated tube assemblies


Nelson? Products

Air Tanks
Nelson? has been a supplier of pressure tanks and vessels for various applications for more than 30 years. We utilize the latest technologies and manufacturing techniques to design and manufacture custom air tanks to fit any application.

We have the capabilities to build air tanks with body diameters ranging from 6 inches to 22 inches, and we can build them to any length needed with such materials as carbon steel with primer, aluminized steel, or stainless steel. All air tanks are manufactured and tested to SAE J10 and FMVSS-121 specifications.

Our Dynamics Lab provides structural and vibration testing of each design. Corrosion resistance of materials and coatings takes place in our Environmental Lab. Every air tank is pressure tested to 300 PSI for a standard of 150 PSI maximum allowable working pressure. Prior to production, every design is hydrostatically tested to 750 PSIG. Designs requiring other pressure ratings can also be tested and produced.

Air Tanks

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ARM18-1050 (case of 4)

Air Filter



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Air Filter


ARP75 (case of 6)

Air Filter


ARP348 (case of 6)

Air Filter



Air Filter



Air Filter


LP20 (16 oz.) (case of 12)

Perry Liquid


LP20 (5 gal.)

Perry Liquid


PFC8A (case of 12)

Coolant  Filter


PFC16A (case of 12)

Coolant  Filter


PFC428 (case of 12)

Coolant  Filter


PFC429 (case of 12)

Coolant  Filter


S-4A (case of 12)



We carry the entire line of Nelson products, and we're adding them to our online system just as fast as we can.  For items not yet listed, please call us at 1-800-367-1253 or e-mail us , and we'll be happy to help you out.

    This page is under construction...

Cummins Fleetguard, Inc. ? 2001
A Cummins Company
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