--- product_id: 97870816 title: "Engine Air Valve Holder(Heavy Duty Hose 1000PSI) Fit M12 or M14" brand: "kweiny" price: "€ 42.31" currency: EUR in_stock: true category: "Kweiny" url: https://www.desertcart.gr/products/97870816-engine-air-valve-holder-heavy-duty-hose-1000psi-fit-m12 store_origin: GR region: Greece --- # 1000 PSI max pressure Steel wire braided hose Fits M12 & M14 spark plugs Engine Air Valve Holder(Heavy Duty Hose 1000PSI) Fit M12 or M14 **Brand:** kweiny **Price:** € 42.31 **Availability:** βœ… In Stock ## Summary > πŸ”© Lock in precision, unlock engine secrets! ## Quick Answers - **What is this?** Engine Air Valve Holder(Heavy Duty Hose 1000PSI) Fit M12 or M14 by kweiny - **How much does it cost?** € 42.31 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/97870816-engine-air-valve-holder-heavy-duty-hose-1000psi-fit-m12) ## Best For - kweiny enthusiasts ## Why This Product - Trusted kweiny brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durable Heavy-Duty Hose:** Upgraded steel wire braided hose ensures maximum strength and longevity under pressure. - β€’ **Leakage Diagnosis Made Simple:** Pinpoint air leaks during compression stroke by listening for continuous air escape. - β€’ **Precision Cylinder Pressurization:** Hold valves closed effortlessly with up to 1000 PSI compressed air pressure. - β€’ **Universal Spark Plug Compatibility:** Seamlessly fits M12 and M14 spark plugs for versatile engine diagnostics. - β€’ **Non-Invasive Valve Seal Replacement:** Replace oil seals without dismantling the engineβ€”save time and avoid hassle. ## Overview The kweiny Engine Air Valve Holder is a heavy-duty diagnostic tool designed for gasoline engines with M12 or M14 spark plugs. Featuring a steel wire braided hose rated up to 1000 PSI, it pressurizes cylinders to hold valves closed, enabling oil seal replacement without dismantling. It also aids in detecting air leaks during compression strokes, making engine maintenance faster and more precise. ## Description Buy kweiny Engine Air Valve Holder(Heavy Duty Hose 1000PSI) Fit M12 or M14 | Cylinder Leakage Testing Assistant Tool: Valve Train Tools - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases ## Features - Main Usage 1: Pressurizes the cylinder to help hold valves closed with compressed air. So The oil seal of the valve can be replaced without dismantling; - Main Usage 2: When the cylinder is in the compression stroke. If the air tightness of the engine is not good enough, you can hear the continuous leakage of air. Diagnosis of damaged parts by listening to the leak position; - Compatibility: Suitable for the gasoline engine with M14 or M12 spark plug. The joint of this tool must be installed on the position of the spark plug; - Working requirements: Compressed air (working pressure 30psi≀P≀1000psi), Air inlet: 1/4" quick coupler male plug; - Anti high pressure: Upgraded products using improved materials 2024, Steel wire braided hose, Maximum compressive strength of 1000PSI. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07FYCSKJV | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #496,315 in Automotive ( See Top 100 in Automotive ) #232 in Engine Valve Train Tools | | Brand Name | kweiny | | Compatible with Vehicle Type | ATV, Motorbike, Passenger Car, Truck | | Customer Reviews | 4.2 4.2 out of 5 stars (475) | | Fit Type | Vehicle Specific Fit | | Item Diameter | 14 millimeters | | Item Weight | 5.5 ounces | | Manufacturer | Xingzhu | | Manufacturer Part Number | XZAMR000 | | Material Type | Brass, Rubber | | Model Number | 5824091470 | | Number of Pieces | 1 | | Shape | Round | | UPC | 781573032666 | | Unit Count | 1 Count | ## Product Details - **Brand:** kweiny - **Fit Type:** Vehicle Specific Fit - **Material:** Brass, Rubber - **Number of Pieces:** 1 - **Vehicle Service Type:** ATV, Motorbike, Passenger Car, Truck ## Images ![Engine Air Valve Holder(Heavy Duty Hose 1000PSI) Fit M12 or M14 - Image 1](https://m.media-amazon.com/images/I/61BmpNZx9ZL.jpg) ## Questions & Answers **Q: Does this work on a early Chevy 5.3?** A: I used it on a 1966 283 Chevy engine. I found it easy to use and very effective. You will need a small wrench to tighten the tool into the spark plug opening. I ran about 40 PSI on the unit and left my air compressor running as needed. **Q: Will this work on a small block Chevy 350 ?** A: YES! It will work on Chevy 350, 305, any small block. The two thread sizes it comes with fits most cars. **Q: I used it, the high pressure tube blew out at 60psi on the very first use, the return window is closed, will you take it back?** A: If you're changing valve seals you only need 35 to 40 PSI. **Q: Do you make a solid tube for when the spark plug is recessed several inches? Where a flexible valve holder cannot be tightened.** A: My spark plug is recessed about an inch if that and I used an old 3/8 wrench and bent the end so that I could get in to the recessed area and tighten the fitting. You do not have to make it very tight to get a seal. If your plug is recessed several inches, then I think the only option you would have would to be make up a tube that would slide over the air hose on the kweiny and use that to tighten the fitting. Good luck, Jim ## Frequently Bought Together - kweiny Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool(Heavy Duty Hose 1000PSI) Fit with M12 or M14 Thread - OEMTOOLS 25220 Overhead Valve Spring Compressor Tool, Removes Valve Spring Keepers and Springs Without Removing Cylinder Heads, Automotive Valve Spring Compressor - HW0107 Valve Seal Pliers Valve Stem Seal Removal Remover Tool 27cm Length --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/97870816-engine-air-valve-holder-heavy-duty-hose-1000psi-fit-m12](https://www.desertcart.gr/products/97870816-engine-air-valve-holder-heavy-duty-hose-1000psi-fit-m12) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-09-24*