--- product_id: 535650945 title: "Engine Air Valve Holder Tool M12 M14 to 1/4 NPT for LS Engine | 30-110 Psi operating range | 300 psi/20 bar tube | brass fitting rubber hose" brand: "guteauto" price: "B/.34" currency: PAB in_stock: true category: "Guteauto" url: https://www.desertcart.com.pa/products/535650945-engine-air-valve-holder-tool-m12-m14-to-1-4 store_origin: PA region: Panama --- # 30-110 PSI operating pressure M12 & M14 thread compatibility Brass fitting & rubber hose durability Engine Air Valve Holder Tool M12 M14 to 1/4 NPT for LS Engine | 30-110 Psi operating range | 300 psi/20 bar tube | brass fitting rubber hose **Brand:** guteauto **Price:** B/.34 **Availability:** ✅ In Stock ## Summary > 🔧 Lock in performance, unlock precision – the must-have valve tool for every LS engine pro! ## Quick Answers - **What is this?** Engine Air Valve Holder Tool M12 M14 to 1/4 NPT for LS Engine | 30-110 Psi operating range | 300 psi/20 bar tube | brass fitting rubber hose by guteauto - **How much does it cost?** B/.34 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/535650945-engine-air-valve-holder-tool-m12-m14-to-1-4) ## Best For - guteauto enthusiasts ## Why This Product - Trusted guteauto brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Build:** Brass fittings paired with a flexible rubber hose for long-lasting, leak-proof performance - • **Universal Thread Fit:** Seamlessly connects M12 and M14 spark plug ports for versatile LS engine use - • **Precision Pressure Range:** Operates reliably between 30-110 PSI to ensure accurate valve sealing and testing - • **Multi-Vehicle Compatibility:** Ideal for cars, trucks, boats, motorcycles, ATVs, and UTVs powered by gasoline LS engines - • **Essential Valve Service Tool:** Keeps valves securely closed during spring or stem seal maintenance and compression testing ## Overview The Guteauto Engine Air Valve Holder Tool is engineered for LS gasoline engines, featuring M12 and M14 thread compatibility with a 1/4 NPT quick coupler. It operates within a precise 30-110 PSI range using durable brass fittings and a rubber hose, enabling effective valve closure during maintenance and compression testing across a wide range of vehicles. ## Description Buy Guteauto Engine Air Valve Holder Pressure Pipe Cylinder Leakage Testing Assistant Tool with Ball Valve M12 M14 Thread to 1/4 NPT Universal for Mustang Ford GM Trucks LS Engine: Valve Train Tools - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Used with M14 or M12 spark plugs in gasoline engine cylinders; the spark plug must be removed prior to installation of this tool. The majority of LS engines may be used in gasoline-powered vehicles like cars, trucks, boats, motorcycles, ATVs, and UTVs. Not for use with diesel engines - VALVE SERVICE USE: Pressurized air helps keep valves closed during valve spring or valve stem seal service and supports cylinder leak or compression testing - THREAD AND COUPLER DETAILS: M12 and M14 thread to NPT joint connects at the spark plug location with a 1/4 in NPT quick coupler male plug for air supply - MATERIAL AND PRESSURE: Rubber tube and brass fitting connections are used; working pressure is 30 psi to 110 psi, not the 4500 PSI marking on the tube - PACKAGE CONTENT: Includes 1 pc engine air valve holder pressure pipe ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C56ZW4Q9 | | Best Sellers Rank | #696,044 in Automotive ( See Top 100 in Automotive ) #289 in Engine Valve Train Tools | | Brand | Guteauto | | Customer Reviews | 4.0 4.0 out of 5 stars (110) | | Date First Available | May 14, 2023 | | Item Weight | 5 ounces | | Manufacturer | Guteauto | | Manufacturer Part Number | 230410gu0025 | | Model | Engine Air Valve Holder Pressure Pipe - 230410gu0025 | | Package Dimensions | 5.94 x 4.37 x 1.69 inches | ## Images ![Engine Air Valve Holder Tool M12 M14 to 1/4 NPT for LS Engine | 30-110 Psi operating range | 300 psi/20 bar tube | brass fitting rubber hose - Image 1](https://m.media-amazon.com/images/I/41dJ2a8JQPL.jpg) ![Engine Air Valve Holder Tool M12 M14 to 1/4 NPT for LS Engine | 30-110 Psi operating range | 300 psi/20 bar tube | brass fitting rubber hose - Image 2](https://m.media-amazon.com/images/I/61IBYl-+eGL.jpg) ![Engine Air Valve Holder Tool M12 M14 to 1/4 NPT for LS Engine | 30-110 Psi operating range | 300 psi/20 bar tube | brass fitting rubber hose - Image 3](https://m.media-amazon.com/images/I/51tzGYTamIL.jpg) ![Engine Air Valve Holder Tool M12 M14 to 1/4 NPT for LS Engine | 30-110 Psi operating range | 300 psi/20 bar tube | brass fitting rubber hose - Image 4](https://m.media-amazon.com/images/I/51bonO1XRPL.jpg) ![Engine Air Valve Holder Tool M12 M14 to 1/4 NPT for LS Engine | 30-110 Psi operating range | 300 psi/20 bar tube | brass fitting rubber hose - Image 5](https://m.media-amazon.com/images/I/61egF7NdudL.jpg) --- ## 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.com.pa/products/535650945-engine-air-valve-holder-tool-m12-m14-to-1-4](https://www.desertcart.com.pa/products/535650945-engine-air-valve-holder-tool-m12-m14-to-1-4) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-07-09*