UPR Billet One-Way Valve Cover Crankcase Breather Kit

Brand: UPR Products
SKU: 5013-01
Availability: In Stock
Please hurry! Only 3 left in stock
Engine: 10-18 Camaro Camaro 6.2

Free UK Shipping On Orders Over £150

Terms and Conditions apply

Buy Now Pay Later

Plan. Buy. Pay in 3 with PayPal pay later

Check Product Availability

You’re welcome to get in touch for estimate lead times on any of our products using our Live Chat feature.

'Out of Stock' Lead Times

Our typical lead time for the majority of 'Out of stock' parts is 10-14 business days, subject to availability from the manufacturer. Orders will be dispatched as soon as all items become available.

Get Expert Advice

Unlock the full potential of your vehicle with Nemesis UK. Get expert advice from our team including guidance on fitting and recommended installers.

Get Expert Advice

Free up Horsepower - Eliminate Crankcase Pressure Brand new UPR Billet One-Way Crankcase Breather Kit. This is a direct replacement for the factory oil fill cap that vents unwanted crankcase pressure to the atmosphere and improving overall performance. Incorporating a High-Performance check ball keeping unmetered air from entering the crankcase. The main benefit is that it drives just like stock until you get into BOOST and it releases unwanted crankcase pressure beneath the pistons during the down stroke.

Basically, it frees up Horse Power that your engine never had the ability to utilize until installing this UPR Billet One-Way Crankcase Breather. Incorporating 4 internal baffles to control oil. Ideal for all street and race applications to handle engine blow-by and any boost levels.

It has the ability to relieve excessive crankcase pressure that would otherwise flood the crankcase and create a positive pressure condition. This condition affects performance in a very negative manner. The positive pressure fights the engine's pistons on the every down stroke, and even the best-flowing PCV system is not designed for the demand of many late model passenger cars and trucks, let alone all the high-performance applications that are being produced and modified on a daily basis.
So after trying many different crankcase ventilation systems, we thought it was time to offer a more comprehensive crankcase breather solution. This setup incorporates specifically designed staged baffles and rubber wall barriers that allow the best airflow and control oil from escaping or climbing the valve wall during operation. It was critical to keep the oil contained throughout the pressure release cycle or otherwise called WOT = Wide Open Throttle.

This system offers a TRUE solution to vehicles with MAF sensors and MAP sensors without allowing unmetered air to enter the crankcase and affect the tune. What the breather has really excelled at is the real world horsepower and efficiency gains the engine now benefits from by eliminating positive crankcase pressure. Whether the vehicle is normally aspirated, supercharged, turbocharged or nitrous equipped, it will benefit from being able to control the excessive cylinder pressure that creates blow-by in any engine.

Currently, the majority of the people running the UPR Crankcase Breathers have them in conjunction with a UPR Products Catch Can System to be sure they are controlling oil from getting through the PCV system and entering the intake tract. The benefits are 100% real, and the cost vs. results can’t be beaten.

Product Features

» 5 Minute Installation
» CNC Machined Billet Body
» Direct Replacement for Oil Fill Cap
» Releases unwanted crankcase pressure under Boost
» Check Ball prevents unmetered air from entering engine
» Select Engine Size Above


Installs in 5 minutes.

Ordering is made easy with our online Checkout.

You will see estimate availability of products above the ‘Add to Cart’ button.

Many parts are held in stock, or available to order for delivery in 10-14 days, subject to availability from our suppliers.

Orders placed before 12pm Monday-Friday may be dispatched same-day, provided ALL items in your order are in-stock (exceptions apply).

We now offer FREE UK SHIPPING on orders for parts over £150 total.

For orders under £150 or to non-UK destinations, shipping charges are applied at Checkout.

You can check costs for shipping via the Checkout:

  1. Add the item(s) to your Cart
  2. View Cart and select Checkout
  3. Enter your personal details and delivery address
  4. Shipping costs will automatically update and you can review your order total before completing payment
  5. If you wish to continue shopping, click the logo at the top of the checkout page to return to our Home page.

For orders sent outside the UK (Europe, Rest of the World)

Our website pricing usually includes UK VAT.

Once you proceed to Checkout and update your delivery address to a non-UK destination, pricing in the checkout will automatically update to exclude UK VAT.

If you continue to browse our website during this, or subsequent sessions, the pricing you will see in our online store may automatically show as excluding UK VAT due to the delivery address now stored in the Checkout.

IMPORTANT – Orders delivered outside the UK will usually be subject to additional Local Customs and Import Duties. Such charges are the responsibility of the recipient and vary from country to country. Contact your local customs office for more details.

Comprehensive information on Ordering, Shipping rates as well as Warranty and Returns plus more can be found here.

You May Also Be Interested In

Recently Viewed

Shop By Brand