--- product_id: 535650945 title: "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" brand: "guteauto" price: "AR$54808" currency: ARS in_stock: true reviews_count: 8 category: "Guteauto" url: https://www.desertcart.com.ar/products/535650945-engine-air-valve-holder-pressure-pipe-cylinder-leakage-testing-assistant store_origin: AR region: Argentina --- # 30-110 PSI operating pressure M12 & M14 thread compatibility Durable brass & rubber construction 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 **Brand:** guteauto **Price:** AR$54808 **Availability:** ✅ In Stock ## Summary > 🔧 Don’t let leaks slow you down—pressure test like a pro! ## Quick Answers - **What is this?** 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 by guteauto - **How much does it cost?** AR$54808 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/535650945-engine-air-valve-holder-pressure-pipe-cylinder-leakage-testing-assistant) ## 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 - • **Robust Build Quality:** Crafted with abrasion-resistant rubber tubing and corrosion-proof brass fittings for long-lasting durability. - • **Universal Thread Fit:** Seamlessly fits M12 and M14 spark plug ports for versatile engine compatibility. - • **Engineered for LS & More:** Ideal for Mustang, Ford, GM trucks, and a wide range of gasoline engines—your go-to diagnostic assistant. - • **Quick-Connect Convenience:** 1/4" NPT quick coupler enables fast, hassle-free air compressor hookups to save you time. - • **Precision Pressure Control:** Operates reliably within 30-110 PSI to accurately test cylinder leakage without risk. ## Overview The Guteauto Engine Air Valve Holder Pressure Pipe is a precision tool designed for quick and reliable cylinder leakage testing on gasoline engines. Compatible with M12 and M14 spark plug threads, it supports operating pressures from 30 to 110 PSI and features durable brass and rubber construction. Perfect for LS engines in Mustangs, Ford, GM trucks, and more, it includes a 1/4" NPT quick coupler for easy air compressor connection, making valve spring and seal maintenance efficient and accurate. ## 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 Review: Great tool for working on older cars - Works well and cheap. Did the trick, be patient Review: Must have for mechanical work. - Very nice tool for replacing valve seals. ## 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 - When replacing valve springs or valve stem seals, pressurized air can help maintain the valve closed by pressurizing the cylinder. assist in swiftly determining the cause of low cylinder pressure (Exhaust pipe leak or Throttle leak) - Install the joint on the location of the spark plug when using a 300Psi/20Bar pressure tube with M12 and M14 thread to NPT. For convenience, there is a 1/4" NPT quick coupler male plug for the air compressor and pump. Take note of the operating pressure range of 30psi≤P≤110psi(2bar≤P≤8bar). - Use sturdy rubber tube and brass fitting connections for durability against abrasion, corrosion, and high pressure. The valve is kept from falling into the combustion chamber by air pressure. - PACKAGE CONTENT -PACKAGE CONTENT - 1 Pc Engine Air Valve Holder Pressure Pipe. Please double-check before making a purchase. Please be aware that the working pressure is 30psi≤P≤110psi and not the mark 4500 PSI on the tube which indicates air working pressure. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C56ZW4Q9 | | Best Sellers Rank | #166,281 in Automotive ( See Top 100 in Automotive ) #115 in Engine Valve Train Tools | | Brand | Guteauto | | Customer Reviews | 3.9 3.9 out of 5 stars (105) | | 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 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 - Image 1](https://m.media-amazon.com/images/I/41dJ2a8JQPL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great tool for working on older cars *by R***S on May 9, 2025* Works well and cheap. Did the trick, be patient ### ⭐⭐⭐⭐⭐ Must have for mechanical work. *by R***R on January 26, 2025* Very nice tool for replacing valve seals. ### ⭐ Not for engine leak down testing. Hose max pressure only 4 and half pounds *by C***0 on September 2, 2024* Not for engine leak down testing. Hose max pressure only 4 and half pounds. Hose stamped 4.500 which is very misleading making you think it can handle 4500 lb pressure. The hose very dangerously exploded under pressure. NOT FOR ENGINE CYLINDER PRESSURE CHECKING. --- ## 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.ar/products/535650945-engine-air-valve-holder-pressure-pipe-cylinder-leakage-testing-assistant](https://www.desertcart.com.ar/products/535650945-engine-air-valve-holder-pressure-pipe-cylinder-leakage-testing-assistant) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-10*