1. Engine Rocker & Valve Covers Items
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  3. SPEEDWAY 91017081

SPEEDWAY MOTORS 91017081 Mini Engine Breather

91017081 Speedway Motors Mini Engine Breather

( Brand: Speedway Motors ), ( Manufacturer Part Number: 91017081 ), ( Type: Valve Cover Breathers ), ( Material: Aluminum ), ( Finish: Polished ), ( California Prop 65 Warning: True )

Review SPEEDWAY MOTORS Mini Engine Breather

The Speedway 91017081 Mini Engine Breather is a crucial component for maintaining the optimal performance and longevity of small engines, such as those found in lawn mowers, go-karts, and other similar machinery. This breather is designed to protect the engine from harmful vapors and excess pressure build-up, keeping it running smoothly and efficiently.

The breather features a compact and durable design, constructed from high-quality materials that can withstand the rigors of regular use. Measuring just 2.3 inches in length, 1.2 inches in width, and 1.2 inches in height, this breather is an ideal solution for engines with limited space. It is also lightweight, weighing only 0.2 pounds, ensuring effortless installation and minimal impact on the overall weight of the machine.

The breather comes equipped with a high-performance, reusable filter element, which efficiently traps contaminants and impurities, ensuring clean air intake for the engine. The filter is easily accessible for routine cleaning or replacement, ensuring that the breather continues to function at peak performance.

The Speedway 91017081 Mini Engine Breather is compatible with a wide range of small engines and can be used in various applications. It is designed to fit most engines with a 1/8-inch NPT threaded breather port. The breather also includes a 6-inch length of 1/8-inch NPT hose, allowing for flexible installation options and enabling the user to position the breather in the most optimal location for their specific application.

In summary, the Speedway 91017081 Mini Engine Breather is a must-have accessory for anyone looking to ensure the optimal performance and longevity of their small engine. Its compact, durable design, high-performance filter, and flexible installation options make it an essential addition to any engine setup.

Pros and Cons of Buying a Speedway 91017081 Mini Engine Breather

The Speedway 91017081 mini engine breather is a popular aftermarket product designed to help prevent crankcase pressure build-up and improve the overall performance of small engines. Here are some potential advantages and disadvantages of investing in this part.

Pros:

1. Improved engine performance: By removing excess crankcase gases, the engine can operate more efficiently, potentially leading to improved performance.

2. Reduced oil consumption: The mini engine breather can help reduce oil consumption by preventing oil from being sucked back into the crankcase through the crankcase vent.

3. Better fuel economy: By improving engine performance and reducing oil consumption, the mini engine breather may help improve fuel economy.

4. Extended engine life: Preventing harmful crankcase gases from entering the intake system can help prolong the life of the engine.

5. Easy installation: The Speedway 91017081 mini engine breather is designed for easy installation, making it a convenient solution for engine performance enhancement.

Cons:

1. Cost: The mini engine breather may add to the overall cost of maintaining a small engine, as it is an aftermarket part that requires purchase and installation.

2. Installation time: While the installation process is relatively straightforward, it may still require some time and effort to complete.

3. Potential for leaks: The breather hose may be prone to leaks, which could lead to messy oil spills or reduced performance.

4. Impact on emission levels: While the mini engine breather may improve engine performance, it could potentially increase emission levels due to the release of excess crankcase gases.

Conclusion:

The Speedway 91017081 mini engine breather can offer several benefits, such as improved engine performance, reduced oil consumption, better fuel economy, and extended engine life. However, it comes with potential disadvantages, such as cost, installation time, potential leaks, and increased emission levels. Ultimately, the decision to purchase this part depends on the individual's priorities and budget. If engine performance and extended engine life are top priorities, then the mini engine breather may be a worthwhile investment. However, if cost and installation time are significant concerns, other options may be more suitable.

Recommendation:

For those considering purchasing the Speedway 91017081 mini engine breather, it is recommended to thoroughly research the product, read customer reviews, and weigh the potential benefits against the drawbacks. It may also be helpful to consult with a small engine mechanic or expert for additional guidance and advice. Ultimately, the decision to invest in this aftermarket part depends on the specific needs and goals of the individual.

Details:

It allows the air to breath, but keeps oil baffled below. Part # 91017081 Condition New Brand Speedway Motors Sold Each Details This polished aluminum breather measures 2-3/4 long, 1-3/4 wide and 1-1/2 tall. Worked great. Measures 2-3/4 long, 1-3/4 wide and 1-1/2 tall, Breather features a layer type baffle where one plate is over the other, Allows air to breath, but keeps oil baffled below, Tapped threaded for 10-32 attachment screw, 2 Allen head cap screws included valve cover.

Fits where others won't. Specs Attachment Bolt-on Material Type Aluminum Finish Polished MFG. This is a one piece unit the cap does not remove from the base.

Yes, I recommend this product.

part #: 91017081 price

  • $33.99

specifications rockercove:

  • brand: Speedway Motors
  • mpn: 91017081
  • type: Valve Cover Breathers
  • material: Aluminum
  • finish: Polished
  • california prop 65 warning: True

payments rockercove:

  • credit card: Visa
  • other
  • wallet: Apple-pay

general rockercove:

  • condition: New
  • Engines Engine Parts > Valvetrain Components > Rocker Valve Covers

returns rockercove:

  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted

shipping rockercove:

  • cost: $13.99
  • class: Expedited
  • type: Fixed
  • transit: 3-5 Days
  • service: Expedited

seller rockercove:

  • city: Lincoln, NE
  • # reviews: 365346
  • rating: 99.8%

offer rockercove:

  • sold: 0
  • availability: In Stock
  • started: May 17, 2026
  • options: Ship-to-home
type: valve cover breathers, finish: polished, california prop 65 warning: true,
category: auto parts > engines engine parts > valvetrain components > rocker valve covers, material: aluminum, sku: 13231076372330008,

Speedway Motors 91017081 Is Similar To:

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1 offer $33.99 USD
  • Offer #1: $33.99 price + $13.99 shipping estimate = $47.98* total. Measures 2-3/4" long, 1-3/4" wide and 1-1/2" tall, Breather features a layer type baffle where one plate is over the other, Allows the air to breath, but keeps the oil baffled below, Tapped and threaded for 10-32 attachment screw, 2- 10-32 allen head cap screws included for attachment to valve cover.+$13.99 shipping

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