Kawasaki Mule 3000/3010/3020/4000/4010 Exhaust Muffler
$105 price checked August 2026
If you need to replace part 18091-1104 on a Kawasaki Mule 3000 or 4010, this is the right choice.
Where the Mule Exhaust Muffler Fits
The Kawasaki Mule 3000 Exhaust Muffler is for owners of Kawasaki Mules 3000 through 4010 who need a direct-fit replacement that includes two gaskets for a proper seal.
Exhaust drone and rattling can make utility work frustrating and increase noise fatigue during long shifts on the job site. A failing muffler often leads to increased noise levels or poor exhaust flow that affects the vehicle’s performance.
The Kawasaki Mule 3000 Exhaust Muffler provides a direct replacement for part numbers 18091-1104 and 11060-2079 to restore original factory noise suppression. It includes 2 gaskets to ensure a secure fit and proper exhaust seating.
We evaluated the Kawasaki Mule 3000 Exhaust Muffler against the other auto muffler options we compared to determine its fit for specific utility models. This review is for owners of Kawasaki Mules 3000, 3010, 3020, 4000, and 4010 who require an OEM-style replacement.
For motorcycle enthusiasts, you can view our full review of the CMX500 Slip On to see how it performs.
How Car Forum World picked: we started from the 200 most-reviewed auto muffler listings in our retail dataset, removed duplicates, accessories and off-category products, and 86 qualified. This product is one of 10 from that pool chosen for a full review. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
The Short Answer on the Mule Exhaust Muffler
Best for: you need a direct-fit replacement for a Kawasaki Mule 3000, 3010, 3020, 4000, or 4010 series utility vehicle.
We recommend the Mule Exhaust Muffler at the $105 price point.
- Pro: Includes 2 gaskets to ensure a secure seal during installation.
- Pro: Replaces multiple part numbers including 18091-1104 and 11060-2079.
- Pro: Holds a 4.7 rating from 120 buyer ratings.
- Con: The specific fitment limits use to the Mule 3000-4010 series only.
- Con: The $105 cost is higher than basic universal mufflers, requiring a specific vehicle match to justify the spend.
Don’t buy this if: your vehicle is not a Kawasaki Mule 3000, 3010, 3020, 4000, or 4010, as the inlet and outlet dimensions will not align.
Price assessment: The $105 price is fair for a vehicle-specific muffler that includes necessary gaskets.
Car Forum World score: 8.9/10 (data-driven – see “How we picked” above)
If you need a high-flow system, see how the 409S Muffler Kit performs in our detailed breakdown.
Heavy-duty truck owners should consult our guide to the best exhaust muffler for ram 1500 before purchasing.
The Specifications That Matter
| Replaces Part Number | 18091-1104 |
| Supersedes Part Number | 18090-1912 |
| Replaces Alternate Number | 11060-2079 |
| Compatibility | Kawasaki Mule 3000, 3010, 3020, 4000, 4010 |
| Included Hardware | 2 Gaskets |
| Product Type | New Muffler |
The Mule Exhaust Muffler is compatible with several Kawasaki Mule models, including the 3000 and 4010 series.
Where this sits in the buyer data: Among the 86 products screened for this category, this one’s 4.7 rating places it #11, on 120 ratings – above the 14-rating median of that group, so the average rests on more feedback than most of its comparables. On price it undercuts 69 of them.
Before You Buy: Mule Exhaust Muffler Checklist
The first thing to check is whether your specific Kawasaki Mule model is listed among the compatible vehicles to ensure the mounting points align with your header.
- ✅ Confirm your vehicle model—Mule 3000, 3010, 3020, 4000, or 4010—matches the compatible list
- ✅ Verify your current muffler part number is 18091-1104, 18090-1912, or 11060-2079
- ✅ Check for cargo rack clearance by measuring the distance between your rear fender and the exhaust path
- ✅ Confirm the inlet and outlet diameters match your existing header to ensure a bolt-on fit without welding
- ✅ Budget for the installation of the 2 included gaskets to ensure a proper seal
You should not buy this muffler if your vehicle requires a custom exhaust path or if you have aftermarket modifications that obstruct the standard mounting points.
Performance: What the Specs Deliver
Direct Replacement Compatibility
The Kawasaki Mule 3000/3010/3020/4000/4010 Exhaust Muffler replaces part numbers 18091-1104 and 11060-2079. Because it supersedes 18090-1912, you can rely on the muffler’s fitment to match the original factory geometry and mounting points.
The Mule Exhaust Muffler is designed to replace the factory unit rather than serve as a universal fitment. You should confirm your vehicle’s original part number matches these specifications to ensure the flange aligns correctly with the exhaust header.
Multi-Model Mule Support
This Mule Exhaust Muffler supports the Kawasaki Mule 3000, 3010, 3020, 4000, and 4010 models. This broad compatibility allows you to maintain a consistent exhaust profile across different utility vehicle configurations within the Mule lineup.
The Mule Exhaust Muffler provides a standard replacement for these specific models. If you own a different Mule variant, check the inlet and outlet diameters against your current setup before ordering, as incorrect sizing can cause exhaust backpressure.
Included Gasket Hardware
The Mule Exhaust Muffler includes 2 gaskets to ensure a proper seal at the connection point. Having the gaskets included allows you to complete the installation without sourcing additional hardware to prevent exhaust leaks.
Proper sealing is necessary to prevent vibration-induced cracking or noise seepage. Since the Mule Exhaust Muffler provides the necessary gaskets, you can ensure the connection remains secure during heavy hauling or off-road use.
Noise Level and Operation
The Kawasaki Mule 3000/3010/3020/4000/4010 Exhaust Muffler is a replacement muffler designed to maintain standard noise levels. Because it replaces OEM part numbers, it functions as a standard muffler rather than a high-flow race pipe.
The Mule Exhaust Muffler is intended to keep noise within typical operating ranges for utility vehicles. If you need to verify specific decibel levels for local noise ordinances, you must consult the manufacturer’s technical data or a professional installer, as the data does not specify a maximum decibel rating.
How the Mule Exhaust Muffler Compares to Alternatives
The Mule Exhaust Muffler provides the lowest price in our comparison at $105, making it the most budget-friendly option for a Kawasaki Mule replacement.
- The Mule Exhaust Muffler costs $0.03 less than the MagnaFlow 12645 Exhaust Muffler.
- The Mule Exhaust Muffler costs $0.05 less than the MagnaFlow 11255 Exhaust Muffler.
- The Mule Exhaust Muffler costs $0.05 less than the MagnaFlow 11256 Exhaust Muffler.
- The Mule Exhaust Muffler costs $0.05 less than the MagnaFlow 11266 Exhaust Muffler.
- The Mule Exhaust Muffler costs $0.58 less than the MagnaFlow 13749 Exhaust Muffler.
- The MagnaFlow 12645 Exhaust Muffler holds a higher 5.0 rating than the 4.7 rating of the Mule Exhaust Muffler.
If you prioritize a higher user rating over the lowest price, the MagnaFlow 12645 Exhaust Muffler is the better pick for your setup.
The data for the Mule Exhaust Muffler does not specify an exhaust flow rate or power increase for towing heavy loads. You should confirm the flow capacity with a local dealer to ensure it meets your specific towing requirements.
The Mule Exhaust Muffler: Remaining Questions
Will the Mule Exhaust Muffler rust out quickly?
The Mule Exhaust Muffler construction is intended to replace part numbers 18091-1104 and 18090-1912. Because the specific steel grade is not listed in the manufacturer’s data, you should confirm the material type with the seller to ensure it meets your requirements for long-term corrosion resistance.
Does the Mule Exhaust Muffler come with gaskets?
Yes, the Mule Exhaust Muffler includes 2 gaskets to ensure a proper seal at the flange. Having these included prevents the need to source additional hardware separately to prevent exhaust leaks.
Will this muffler fit my Kawasaki Mule?
Yes, the Mule Exhaust Muffler is compatible with Kawasaki Mules 3000, 3010, 3020, 4000, and 4010 models. You should verify your specific model’s exhaust port diameter matches the replacement specifications before ordering.
Is the Mule Exhaust Muffler a good value?
If you need a direct replacement for a 3000-series or 4000-series Mule, the $105 price point provides a specific entry point for a new unit. The 4.7 rating from 120 buyers suggests a high level of owner satisfaction with this specific replacement part.
Understanding the differences is easier when you view the various types of mufflers explained in our educational guide.
Is the Mule Exhaust Muffler Right for You?
The Mule Exhaust Muffler suits 5 kinds of buyer and is the wrong choice for 3 jobs, listed below with the reason for each.
Who the Mule Exhaust Muffler is for, and what it does well
Who the Mule Exhaust Muffler suits
- Farm owners with Kawasaki Mules 3000 — need a direct replacement for part # 18091-1104 to maintain vehicle operation
- Landscaping contractors using Mule 4010 — require a reliable exhaust component that supersedes # 18090-1912
- Off-road utility vehicle owners — need a new muffler to restore original exhaust flow and noise levels
- Small business delivery operators — need a compatible muffler for Mule 3020 models to keep the fleet running
- Rural property managers — need a replacement for 11060-2079 to ensure the vehicle meets noise and emission standards
What the Mule Exhaust Muffler handles well
- Replacing a damaged exhaust system — the product is a New Muffler
- Maintaining a Kawasaki Mule 3010 — the product is specifically compatible with this model
- Quick installation of the exhaust — the product includes 2 Gaskets
- Restoring a Mule 4000 — the product is compatible with this specific series
- Updating an older exhaust system — the product supersedes # 18090-1912
What the Mule Exhaust Muffler is the wrong choice for
- High-performance racing modifications — the product is a standard replacement muffler, not a performance tune
- Custom exhaust systems for non-Mule vehicles — the product is specific to Kawasaki Mule 3000/4000 series
- Exhaust systems requiring different mounting — the product is a specific replacement for # 18091-1104
What to budget alongside the Mule Exhaust Muffler, and what to skip
Worth buying at the same time
- Exhaust bolts — needed to secure the muffler to the manifold
- Exhaust hanger — needed to support the weight of the muffler during operation
- Heat wrap — needed to protect surrounding components from the muffler’s heat
- Anti-corrosion spray — needed to protect the new metal from moisture and road salt
- Vehicle lift — needed to safely access the underside of the Mule for installation
What you can skip
- Additional exhaust gaskets — the product already includes 2 Gaskets
- Alternative muffler for Mule 3000 — this product already replaces # 18091-1104
Drivers looking to save money can find the best budget performance muffler for trucks under $300 in our curated list.
Where to Buy the Mule Exhaust Muffler
These retailers sell Auto Muffler generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.
- Summit Racing Equipment (online only) — massive selection of high-performance and specialty exhaust systems
- Amazon (online only) — broad range of aftermarket and universal muffler options
- RockAuto (online only) — extensive catalog of OEM and aftermarket parts with competitive pricing
- JEGS (online only) — specialist selection of high-performance exhaust systems and racing parts
- AutoZone (online and physical stores) — wide availability of standard replacement mufflers and in-store pickup
- O’Reilly Auto Parts (online and physical stores) — extensive inventory of aftermarket exhaust components and local availability
- Advance Auto Parts (online and physical stores) — large selection of performance and stock exhaust parts
Final Verdict on the Mule Exhaust Muffler
If you own a Kawasaki Mule 3000, 3010, 3020, 4000, or 4010 and need a direct replacement for a worn exhaust, the Mule Exhaust Muffler is the correct choice at $105.
The Mule Exhaust Muffler ranks highly for reliability, holding a 4.7 rating from 120 buyers based on its performance as a replacement for part numbers 18091-1104 and 11060-2079.
Skip it if: your vehicle uses a different exhaust configuration than the 18091-1104 standard or if you require a high-performance aftermarket tuning system rather than a standard replacement.