--- product_id: 661257496 title: "PROLUBE Professional 4-Jaw Grease Coupler | with Ball Check | 6,000 PSI | Use with Hand Operated Grease Guns | 1/8\" NPT Threads (43502)" brand: "prolube" price: "$90.25" currency: USD in_stock: false reviews_count: 5 category: "Prolube" url: https://www.desertcart.us/products/661257496-prolube-professional-4-jaw-grease-coupler-with-ball-check-6 store_origin: US region: United States of America --- # 4-jaw secure coupling 6000 PSI max pressure Hardened spring steel jaws PROLUBE Professional 4-Jaw Grease Coupler | with Ball Check | 6,000 PSI | Use with Hand Operated Grease Guns | 1/8" NPT Threads (43502) **Brand:** prolube **Price:** $90.25 **Availability:** ❌ Out of Stock ## Summary > 🔧 Lock in the power, grease like a pro! ## Quick Answers - **What is this?** PROLUBE Professional 4-Jaw Grease Coupler | with Ball Check | 6,000 PSI | Use with Hand Operated Grease Guns | 1/8" NPT Threads (43502) by prolube - **How much does it cost?** $90.25 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/661257496-prolube-professional-4-jaw-grease-coupler-with-ball-check-6) ## Best For - prolube enthusiasts ## Why This Product - Trusted prolube brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Quad-Jaw Grip Security:** 4-jaw design guarantees a rock-solid, leak-free connection every time. - • **Seamless Compatibility:** Standard 1/8" NPT threads fit perfectly with most hand-operated grease guns. - • **Effortless Installation:** Hexagonal nut design allows quick and easy tightening for on-the-go professionals. - • **Durability Meets Precision:** Fully hardened spring steel jaws resist deformation under heavy use. - • **Unmatched Pressure Resilience:** Handles up to 6000 PSI without fail, ensuring professional-grade performance. ## Overview The PROLUBE Professional 4-Jaw Grease Coupler is engineered for high-pressure grease applications up to 6000 PSI. Featuring a robust 4-jaw design with hardened spring steel jaws and a hexagonal nut for easy tightening, it ensures a secure, leak-proof connection with standard 1/8" NPT threaded grease guns. Built for durability and precision, this coupler is the go-to choice for professionals demanding reliability and efficiency. ## Description Designed for use with hand-operated grease guns, this professional-grade coupler allows you to attach and detach hoses, tips, and barrels. This specific coupler is standard-rated, and is not meant to exceed pressures of 6000 PSI. Review: Great product and cost was very reasonable and fast shipping. Review: Works as they should. Basic grease gun end. Nothing fancy, just pumping zerks full of grease ## Features - Professional hydraulic coupler for grease guns not exceeding 6000 PSI - 4-Jaw construction to couple securely - Strong, steadfast coupler body can withstand high pressure without deformation - Hexagonal nut for easy tightening - Fully hardened spring steel jaws ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N64QXB5 | | Batteries Required? | No | | Customer Reviews | 4.4 4.4 out of 5 stars (90) | | Date First Available | 17 Nov. 2016 | | Item Package Quantity | 1 | | Item Weight | 0.28 g | | Item model number | 43502 | | Manufacturer | Groz | | Material | manmade | | Measurement System | US | | Part number | 43502 | | Product Dimensions | 4.93 x 9.86 x 2.54 cm; 0.28 g | ## Images ![PROLUBE Professional 4-Jaw Grease Coupler | with Ball Check | 6,000 PSI | Use with Hand Operated Grease Guns | 1/8" NPT Threads (43502) - Image 1](https://m.media-amazon.com/images/I/71kwgu8MejL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by B***A on 25 July 2024* Great product and cost was very reasonable and fast shipping. ### ⭐⭐⭐⭐ Review *by J***R on 10 March 2023* Works as they should. Basic grease gun end. Nothing fancy, just pumping zerks full of grease ### ⭐⭐⭐⭐⭐ Review *by P***R on 25 April 2024* Works ## Frequently Bought Together - PROLUBE Professional 4-Jaw Grease Coupler | with Ball Check | 6,000 PSI | Use with Hand Operated Grease Guns | 1/8” NPT Threads (43502) - LockNLube Grease Gun Coupler locks onto Zerk fittings. Grease goes in, not on the machine. World's best-selling original locking grease coupler. Rated 10,000 PSI. Long-lasting rebuildable tool. - ZELCAN Grease Fittings Kit, 150pc SAE Hydraulic Grease Zerk Assortment: 1/4" 1/8" Straight 45 90 Degree Angled Zerk Fittings, Galvanized Steel Set for Replacing Missing or Broken Zerk Grease Fittings --- ## 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/661257496-prolube-professional-4-jaw-grease-coupler-with-ball-check-6](https://www.desertcart.us/products/661257496-prolube-professional-4-jaw-grease-coupler-with-ball-check-6) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-10*