--- product_id: 602431114 title: "857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817" brand: "jlm marine" price: "ΰΈΏ3072" currency: THB in_stock: true url: https://www.desertcart.co.th/products/602431114-857005a1-fuel-pump-diaphragm-kit-for-mercury-mariner-and-force store_origin: TH region: Thailand --- # Supports 30-275 HP engines All-in-one repair kit Versatile OEM compatibility 857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817 **Brand:** jlm marine **Price:** ΰΈΏ3072 **Availability:** βœ… In Stock ## Summary > 🚀 Keep Your Engine Roaring with Confidence! ## Quick Answers - **What is this?** 857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817 by jlm marine - **How much does it cost?** ΰΈΏ3072 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/602431114-857005a1-fuel-pump-diaphragm-kit-for-mercury-mariner-and-force) ## Best For - jlm marine enthusiasts ## Why This Product - Trusted jlm marine brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Universal Fit:** Compatible with a wide range of Mercury, Mariner, and Force outboard engines. - β€’ **Durable Design:** Crafted for longevity, ensuring reliable fuel delivery over time. - β€’ **Simplified Repairs:** Includes all necessary components for a hassle-free refurbishment. - β€’ **Lightweight & Compact:** Weighing only 20g, it’s easy to store and handle. - β€’ **Engine Performance Restored:** Revitalize your outboard engine with this essential fuel pump diaphragm kit. ## Overview The JLM MARINE 857005A1 Fuel Pump Diaphragm Kit is a crucial replacement part designed for Mercury, Mariner, and Force outboard engines ranging from 30 to 275 HP. This comprehensive kit includes all necessary components to restore fuel pump efficiency, ensuring optimal engine performance. With its universal compatibility and lightweight design, it simplifies the repair process, making it an essential tool for any boating enthusiast. ## Description 857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817 ## Features - This Fuel Pump Diaphragm Kit is an essential component for maintaining and restoring the performance of various Mercury, Mariner, and Force outboard engines - It is designed as a versatile replacement for several OEM part numbers, including Mercury 21-857005A1, 857005A1, 42990A10, 42990A11, 42990A7, 42990A9, 42990A4, 42990A8, 42990A6, 42990A1, 42990A5, 42990A3, and 42990A2. Additionally, it is compatible with Sierra 18-7817 and Red Rhino FM-803 - This kit's remarkable feature lies in its adaptability to a diverse array of Mercury, Mariner, and Force outboard engines, encompassing a broad spectrum of horsepower ratings. Including 30 40 45 50 55 60 75 90 100 115 125 135 150 175 200 225 250 275 HP - This kit contains essential components to fix the fuel pump diaphragm in outboard engines. Over time, diaphragms wear out, causing fuel delivery issues and reducing engine performance. With this kit, you can restore the fuel pump's efficiency, ensuring proper fuel supply for smooth and reliable engine operation - Repairing or replacing a fuel pump diaphragm can be a challenging task, but this kit is designed to simplify the process. It includes all the essential components, including diaphragms, gaskets, and seals, required to refurbish the fuel pump ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | JLM Marine Parts Manufacturer | | Brand | JLM MARINE | | Model | Marine Fuel Pump Kit | | Package Dimensions | 18.3 x 11.9 x 0.9 cm; 20 g | | Item model number | Mercury 42990A7 | | Exterior | Machined | | Manufacturer Part Number | 21-43990A10 | | OEM Part Number | Mercury 21-857005A1, 857005A1, 42990A10, 42990A11, 42990A7, 42990A9, Mercury 42990A4, 42990A8, 42990A6, 42990A1, Mercury 42990A5, 42990A3, 42990A2, Red Rhino FM-803, Sierra 18-7817 | | Position | Upper | | Lift Type | Electric | | Item Weight | 20 g | ## Product Details - **Brand:** JLM MARINE - **Item weight:** 0.02 Kilograms - **Colour:** 42990A10 - **Material:** Rubber or rubber-like material, various plastics, metals - **Engine type:** 2 Stroke and 4 Stroke ## Images ![857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817 - Image 1](https://m.media-amazon.com/images/I/811gMq97N9L.jpg) ![857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817 - Image 2](https://m.media-amazon.com/images/I/716tLnj4N7L.jpg) ![857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817 - Image 3](https://m.media-amazon.com/images/I/51f+09X4B2L.jpg) ![857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817 - Image 4](https://m.media-amazon.com/images/I/71Tpn-oP+AL.jpg) ![857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817 - Image 5](https://m.media-amazon.com/images/I/61qgTwAe4jL.jpg) ## Frequently Bought Together - JLM MARINE 857005A1 Fuel Pump Diaphragm Kit for Mercury Mariner and Force 30-275 HP Outboard Engines Check Valve 21-43990A10 18-7817 - Quicksilver 816296Q2 Marine Engine in-Line Fuel Filter with Barbs for 5/16" (8 mm) Fuel Lines - JLM MARINE 14360A78 Fuel Pump for Mercury Mariner 98766-C1 30-300 HP Outboard Models 14360A73 14360A43 14360A50 --- ## 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.co.th/products/602431114-857005a1-fuel-pump-diaphragm-kit-for-mercury-mariner-and-force](https://www.desertcart.co.th/products/602431114-857005a1-fuel-pump-diaphragm-kit-for-mercury-mariner-and-force) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-28*