1. Engine Rocker & Valve Covers Items
  2. sku: 8053509808161631
  3. BIG END PERFORMANCE 70139

BIG END PERFORMANCE 70139 Breather High For

70139 Big End Performance Breather For High-performance Applications

( Brand: Big End Performance ), ( Manufacturer Part Number: 70139 ), ( Type: Auto )

Review BIG END PERFORMANCE Breather For High Applications

Introducing the Big End Performance 70139 Breather - a must-have component for any high-performance engine seeking optimal breathability and improved combustion efficiency. This premium breather is meticulously designed to cater to the unique demands of high-performance applications, ensuring unrivaled power delivery and enhanced durability.

The 70139 Breather boasts a large, high-flow design, which allows an increased volume of crankcase gases to escape. This facilitates a more efficient gas exchange between the crankcase and the atmosphere, reducing the risk of crankcase pressure build-up and the subsequent engine detonation. In turn, this leads to a more consistent and powerful combustion process.

Constructed from robust, heat-resistant materials, the Big End Performance 70139 Breather is engineered to withstand the rigorous conditions found in high-performance applications. Its advanced design incorporates a high-temperature rubber seal, which ensures a secure and leak-free connection to the crankcase. This seal is capable of maintaining its integrity even under extreme temperatures, preventing the loss of precious engine oil and ensuring efficient crankcase ventilation.

Additionally, the 70139 Breather features a high-quality, vented cap that is designed to accommodate various types of crankcase ventilation systems, including catch cans and external crankcase ventilation systems. This versatility makes it an ideal choice for a wide range of high-performance engines, from race cars to high-performance street applications.

The Big End Performance 70139 Breather is not only a performance upgrade but also an aesthetic enhancement for your engine bay. Its sleek, modern design complements the look of any high-performance engine, making it a desirable addition for any enthusiast or professional mechanic.

In summary, the Big End Performance 70139 Breather is an essential upgrade for any high-performance engine seeking improved combustion efficiency, enhanced durability, and increased power delivery. With its large, high-flow design, robust construction, and versatile compatibility, it is the go-to choice for those who demand the very best from their engines.

Buying a high-performance breather for an engine like the Big End Performance 70139 can offer several advantages and potential drawbacks. Here are some pros and cons to consider before making a purchase.

Pros:

1. Improved Engine Breathing: A high-performance breather allows the engine to breathe more efficiently by reducing pressure in the crankcase, which in turn allows more air to enter the engine through the air intake system. This results in increased power and torque.

2. Reduced Engine Wear: By allowing excess crankcase gases to escape more efficiently, a high-performance breather can help reduce engine wear and tear, leading to longer engine life and improved performance.

3. Improved Engine Compression: Reducing crankcase pressure can also lead to improved engine compression, which can result in better fuel efficiency and increased power output.

4. Easy Installation: The Big End Performance 70139 breather kit is relatively easy to install and does not require any modification to the engine or other components.

Cons:

1. Cost: High-performance breathers can be more expensive than stock breathers, and the Big End Performance 70139 breather is no exception.

2. Potential for Oil Leaks: Installing a high-performance breather can increase the risk of oil leaks, particularly if the installation is not done correctly. This can lead to messy and costly repairs.

3. Noise: Some high-performance breathers can be noisy due to the increased flow of air and gases. This may not be a concern for all users, but it can be a drawback for those who value quiet operation.

Conclusion:

In conclusion, a high-performance breather like the Big End Performance 70139 can offer significant benefits for high-performance engines, including improved engine breathing, reduced engine wear, improved engine compression, and easy installation. However, it also comes with potential drawbacks such as cost, the risk of oil leaks, and noise.

Recommendation:

If you are looking to maximize the performance of your high-performance engine, a high-performance breather like the Big End Performance 70139 is worth considering. However, it is important to ensure that the installation is done correctly to minimize the risk of oil leaks and other issues. Additionally, be prepared for the additional cost and potential noise. Overall, the benefits of a high-performance breather can outweigh the drawbacks for those who value maximum engine performance.

Details:

The compatibility section is not always 100% accurate. This item comes with the full manufacturers warranty. The color, quantity, size, etc. Fast Free, Shipping: Brand Big End Performance, Part Number 70139, UPC Code, Condition New.

May not be accurate

part #: 70139 prices

  • $22.27-$29.99

specifications rockercove:

  • brand: Big End Performance
  • mpn: 70139
  • type: Auto

returns rockercove:

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

payments rockercove:

  • wallet: Apple-pay
  • other
  • credit card: Diners-club

seller rockercove:

  • rating: 99.0%
  • # reviews: 10943
  • city: Flat Rock, North Carolina

general rockercove:

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

offer rockercove:

  • started: July 16, 2025
  • sold: 0
  • quantity: 2
  • options: Ship-to-home
  • availability: In Stock

shipping rockercove:

  • class: Standard
  • cost: $0.00
  • type: Fixed
  • service: Standard
  • transit: 3-7 Days
type: auto,
category: auto parts > engines engine parts > valvetrain components > rocker valve covers, sku: 8053509808161631,

Big End Performance 70139 Is Similar To:

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3 offers $22.27–$29.99 USD
  • Offer #1: $22.27 price + $0.00 shipping estimate = $22.27* total. The compatibility section is not always 100% accurate. Part Number.FREE SHIPPING
  • Offer #2: $28.50 price + $0.00 shipping estimate = $28.50* total. Manufacturer: Big End Performance. CLAMPON 1 1/2IN TUBE SHEILDER BREATHER RUBBER BASE.FREE SHIPPING
  • Offer #3: $29.99 price + $5.48 shipping estimate = $35.47* total. Shipped with USPS Ground Advantage. Big End Performance Breather for High-Performance Applications.+$5.48 shipping

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