Metco Motorsports Direct Fit Crankcase Breather (2006-Newer 5.7L/6.1L/6.4L HEMI Vehicles)

Product Code: MBR0012
(15 reviews) Write a Review
High Horse Performance is Veteran Owned & Operated

2008-2012 5.7, 6.1, and 6.4L Hemi with Screw-in Oil Cap

Challenger R/T & SRT8

This crank case breather assembly replaces the cap on the oil fill tube located on the driver's side of the intake of the late model Hemi engine. The base of the breather is CNC-machined from billet aluminum for precise fit, and the included silicone O-ring is specially designed to prevent oil seepage at the base of the breather. The filter base is microfinished for surface protection and good looks, and is easily hand-polished to a mirror-like appearance. The removable filter element is a high-quality reusable unit from S & B Filters, and is securely retained in the filter base by a specially-machined retention groove at the top of the filter base.

The purpose of this crank case breather is to vent unwanted accumulation of pressure in the crankcase, and to provide maximum circulation of ambient air in the crankcase to reduce oil temperatures. The installation of this breather will contribute to increased engine oil life and reduce the possibility of failed engine seals resulting from excessive crankcase pressure. This breather will reduce the effectiveness of the vehicle's PCV system, and it is not emissions-legal.

The included check valve will allow the breather to vent any crankcase pressure that accumulates, but it will not allow ambient air to be drawn back into the engine through the breather under high-vacuum conditions. This valve is beneficial for applications that retain a valve cover vent line, or applications with a very sensitive (or aggressively-lean) PCM calibration.


Note 1: This crank case breather will fit earlier Mopar applications using the same screw-in style oil fill cap. This unit will not fit 2015 Hellcat and similar models with the twist-in helix-style thread on the oil cap. For twist-in applications, please see the MBR0019 listed elsewhere.


Note 2: Due to manufacturing differences we can not guarantee fitment on non-OEM aftermarket intake manifolds. Will not work with Holley Sniper Intakes or Edelbrock Victor II Intakes.



15 Reviews Hide Reviews Show Reviews

  • 5
    Crankcase breather

    Posted by David Collins on Mar 22nd 2024

    This product was an OEM direct fit for my 2020 widebody charger. When it arrived it was nicely packaged, along with having clear and precise instructions on how to install. Recommend anyone to purchase.

  • 5
    Crankcase breather

    Posted by Victor Duret on Aug 29th 2023

    Great product I’m hoping to see more products like this one in your catalog

  • 5
    Great product

    Posted by B DuPerre on Jul 26th 2023

    Fits great, looks amazing. Product came polished to perfection, and the filter pre-oiled. Shipped next day, arrived the day after! (Installed on my 2013 Challenger R/T)

  • 5
    Crankcase breather

    Posted by Chris Barrella on Nov 30th 2022

    After replacing both the front and rear main seals on my 5.7 hemi pursuit, I decided to give the crankcase breather a try, since I didn’t want a repeat of the leaks ( although it was kind of cool , because when the rear main seal leaked above 2200 rpm, it leaked directly onto the exhaust and gave me a cheap man’s James Bond style smokescreen…lol). Crankcase breather valve works like a charm. Hood clearance is tight, but it fits.
    I would highly recommend if you are having front or rear main seal issues.

  • 5

    Posted by Mike on Nov 10th 2022

    Nice breather, quality part.

  • 5
    Metco Crank case breather

    Posted by Victor on May 2nd 2022

    I had this on my HC and it really reduced the oil in the canister. I was so glad to see this for the 392. It looks rad in the engine bay. No fitment issues. Oil runs fine with out changes. Will see what the Oil canister shows later. Again people ask what is that... Metco makes good products and HHP would not sell them unless that were the case.

  • 4
    07 SRT Charger

    Posted by Jeremy Nunn on Apr 24th 2022

    So this product appears to be good quality. Although it did not fit my 07 Charger SRT. That said I still gave this product a 4 stars, because this could be due to the manual challenger/police pursuit motor mounts I have installed. The hood would close but I had to force it. I am curious if it would fit with stock motor mounts? Ultimately I took it off, and I will try it on my 08 Challenger instead.

  • 5
    Quality product!

    Posted by Jason Miller on Mar 22nd 2022

    HHP shipped fast and has excellent customer service, I will shop here again.

  • 5
    great product

    Posted by MARK DEHAAN on Jan 4th 2022

    well built and looks good

  • 5
    Very good product

    Posted by Kyle Ferguson on Oct 13th 2021

    I recommend this product