--- product_id: 154695266 title: "GM Genuine Parts 12594578 Positive Crankcase Ventilation (PCV) Tube" brand: "gm genuine parts" price: "$28.74" currency: USD in_stock: true category: "Gm Genuine Parts" url: https://www.desertcart.us/products/154695266-gm-genuine-parts-12594578-positive-crankcase-ventilation-pcv-tube store_origin: US region: United States of America --- # OEM precision fit Barb connector tech 24-month unlimited warranty GM Genuine Parts 12594578 Positive Crankcase Ventilation (PCV) Tube **Brand:** gm genuine parts **Price:** $28.74 **Availability:** ✅ In Stock ## Summary > ⚙️ Upgrade your GM with genuine precision – because your engine deserves the best! ## Quick Answers - **What is this?** GM Genuine Parts 12594578 Positive Crankcase Ventilation (PCV) Tube by gm genuine parts - **How much does it cost?** $28.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/154695266-gm-genuine-parts-12594578-positive-crankcase-ventilation-pcv-tube) ## Best For - gm genuine parts enthusiasts ## Why This Product - Trusted gm genuine parts brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Thousands:** Rated 4.6 stars by over 800 customers—join the savvy GM owners upgrading their ride. - • **Effortless Installation:** Precision-fit barb connectors guarantee a seamless, no-fuss replacement experience. - • **Durability You Can Trust:** Machined exterior finish paired with a robust PCV material built to last under pressure. - • **Engineered for Perfection:** Designed, tested, and warranted exclusively for GM vehicles ensuring flawless compatibility. - • **Warranty-Backed Confidence:** Enjoy peace of mind with a 24-month unlimited mile limited warranty from ACDelco. ## Overview The GM Genuine Parts 12594578 Positive Crankcase Ventilation (PCV) Tube is an OEM-certified replacement part engineered specifically for GM vehicles. Featuring precise barb connectors for easy installation, a durable machined finish, and backed by a 24-month unlimited mile warranty, this PCV tube ensures optimal engine ventilation and reliability. Highly rated by users, it’s the trusted choice for maintaining your GM’s performance and longevity. ## Description Buy GM Genuine Parts 12594578 Positive Crankcase Ventilation (PCV) Tube: PCV Valves - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Designed, engineered, tested, and warranted for GM vehicles - Precise fit for ease of installation - For proper installation, locate your nearest GM dealer, independent service center, or body shop ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RZ2M6ZZ | | Best Sellers Rank | #215,763 in Automotive ( See Top 100 in Automotive ) #337 in Automotive Replacement PCV Valves | | Brand Name | GM GENUINE PARTS | | Connector Type | Barb | | Customer Reviews | 4.6 4.6 out of 5 stars (805) | | Exterior Finish | Machined | | Global Trade Identification Number | 00808709948735 | | Included Components | PCV Valve Tubing | | Inlet Connection Size | 0.32 Inches | | Inlet Connection Type | Barb | | Item Dimensions | 7.6 x 4 x 1.1 inches | | Item Type Name | PCV Valves & Parts - GM,PCV Valves & Parts - GM | | Item Weight | 0.01 Ounces | | Manufacturer | ACDelco | | Manufacturer Part Number | 12594578 | | Manufacturer Warranty Description | 24 Month / Unlimited Mile Limited Warranty (Parts Only). Please see ACDelco.com for more details. | | Material Type | pcv | | Model Number | 12594578 | | Number of Pieces | 1 | | Number of Ports | 2 | | Outlet Connection Size | 0.32 Inches | | Outlet Connection Type | Barb | | Size | 4 x 7.6 x 1.1 inches | | Smart Home Compatibility | Not Smart Home Compatible | | Specification Met | OEM (GM) | | Thread Size | 0.315 inches | | UPC | 808709948735 | | Unit Count | 1.0 Count | | Valve Type | pcv | ## Product Details - **Brand:** GM GENUINE PARTS - **Exterior Finish:** Machined - **Inlet Connection Size:** 0.32 Inches - **Inlet Connection Type:** Barb - **Item dimensions L x W x H:** 7.6 x 4 x 1.1 inches - **Material:** pcv - **Number of Ports:** 2 - **Outlet Connection Size:** 0.32 Inches - **Outlet Connection Type:** Barb - **Specification Met:** OEM (GM) ## Images ![GM Genuine Parts 12594578 Positive Crankcase Ventilation (PCV) Tube - Image 1](https://m.media-amazon.com/images/I/5112fwt8bAL.jpg) ## Questions & Answers **Q: What does this part actually do? the one in my 2008 gmc acadia appears to be duct tape fixed and i’m wondering how important it is** A: It's very important **Q: is oil supposed to go through this tube? my 2007 acadia has oil in this tube** A: Yes it’s part of the pcv system google it. Just relieves pressure from the crank case. Blow it out with an air hose or clean it with soap and water if not damaged and just blow thru it. I cleaned this hose and the intake breather and throttle body every 20k or so and never had any gasket issues with our Acadia **Q: is oil supposed to go through this tube? my 2007 acadia has oil in this tube** A: No but it's a design problem with the Acadia and outlooks **Q: Is this just the tube or are the end pieces attached as shown?** A: Yes it is all parts shown ## Frequently Bought Together - ACDelco GM Genuine Parts 12594578 Positive Crankcase Ventilation (PCV) Tube, Black - ACDelco GM Genuine Parts 12583384 Passenger Side Positive Crankcase Ventilation (PCV) Fitting - V546 PCV Valve for Chevy Chevrolet Camaro Equinox Malibu Impala Traverse Cadillac Buick Enclave Saturn Pontiac G6 G8 Torrent GMC Acadia Terrain PCV Valve 2.4 2.5 3.0 3.6 6.2 7.0L 12578316 12681693 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/154695266-gm-genuine-parts-12594578-positive-crankcase-ventilation-pcv-tube](https://www.desertcart.us/products/154695266-gm-genuine-parts-12594578-positive-crankcase-ventilation-pcv-tube) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-12*