Heating and Cooling› Overflow Tanks and Catch Cans

MightyMouse

Oil Catch Can System

$343.00

SKU: MMS-21

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Mighty Mouse Solutions catch can is an oil catch can system for 2014-2018 Silverado and Sierra trucks with 5.3L or 6.2L engines. It splices in-line with the factory PCV system to capture oil blow-by and provide crankcase pressure relief.
Show original supplier description
The Mighty Mouse Solutions Mild Draft catch can is designed for 2014-2018 Silverado and Sierra models equipped with 5.3L or 6.2L engines. By splicing directly into the stock PCV system, this unit captures oil that would otherwise be consumed by the PCV, helping to maintain cleaner intake components while offering auxiliary crankcase pressure relief. This assembly is configured with -6AN fittings and connects between the valley plate and the intake manifold. It relies on OEM PCV regulation and line sizes, which limits total horsepower capacity compared to 'Wild' variants. The kit includes the necessary push-lock hoses and fittings along with specific mounting hardware for trucks with standard GM brake boosters, electric (IBC) brake systems, or unused front battery trays. Note that this product is not compatible with Duramax models. Installation requires specific mounting considerations based on your truck's brake system or tray configuration. This part is not legal for purchase or use on pollution-controlled vehicles; it is against the law to install this component on an emissions-controlled vehicle.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandMightyMouse
Part NumberMMS-21
CategoryHeating and Cooling

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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