--- product_id: 389056499 title: "DEF Idle Air Control Valve Motor IAC Replace Sierra 18-7701 and Mercruiser 862998 Fits for MerCruiser ECM 555 2001" brand: "def" price: "275 Lei" currency: RON in_stock: true category: "Def" url: https://www.desertcart.ro/products/389056499-def-idle-air-control-valve-motor-iac-replace-sierra-18 store_origin: RO region: Romania --- # Includes gasket for seamless installation Compatible with 4.3L to 8.2L MPI engines Precision fit for MerCruiser ECM 555 DEF Idle Air Control Valve Motor IAC Replace Sierra 18-7701 and Mercruiser 862998 Fits for MerCruiser ECM 555 2001 **Brand:** def **Price:** 275 Lei **Availability:** ✅ In Stock ## Summary > ⚡ Keep your engine idling like a pro—never miss a wave or a moment! ## Quick Answers - **What is this?** DEF Idle Air Control Valve Motor IAC Replace Sierra 18-7701 and Mercruiser 862998 Fits for MerCruiser ECM 555 2001 by def - **How much does it cost?** 275 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/389056499-def-idle-air-control-valve-motor-iac-replace-sierra-18) ## Best For - def enthusiasts ## Why This Product - Trusted def brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Professionals:** Ranked #27 in Car Idle Air Control Valves with a solid 4.0-star rating from 146 users—join the satisfied community. - • **Plug-and-Play Installation:** Comes with a precision gasket and flange connections for hassle-free replacement and perfect sealing. - • **Broad Compatibility Spectrum:** Fits a wide range of engines from 4.3L Alpha/Bravo to 8.2L MIE MPI, ensuring versatile application. - • **Durable Stainless Steel Finish:** Built to resist corrosion and wear, guaranteeing longevity even in harsh marine environments. - • **Engineered for Peak Performance:** Optimized idle control for smooth, reliable engine response across multiple MerCruiser models. ## Overview The DEF Idle Air Control Valve (model 862998/18-7701) is a high-quality replacement part designed for MerCruiser ECM 555 engines from 2001 onward. Compatible with a broad range of marine engines (4.3L to 8.2L MPI), it features a durable stainless steel finish and includes a gasket for easy installation. Trusted by professionals and ranked among the top idle air control valves, it ensures precise idle regulation for smooth engine performance on the water. ## Description DEF Idle Air Control Valve 862998 18-7701 Features High quality and brand new Idle Air Control replace Mercruiser 862998, Sierra 18-7701 Fits for MerCruiser ECM 555 2001 and newer Fits for 4.3L Alpha/Bravo, 5.0L, 5.0LX, 5.7L, 350 MAG, 5.7L Alpha/Bravo EFI, 454 MAG MPI, 502 MAG MPI, 7.4L MPI MIE. 8.2L MIE MPI 1pcs Idle Air Control Valve with Gasket ## Features - High quality and brand new - Idle Air Control replace Mercruiser 862998, Sierra 18-7701 - Fits for MerCruiser ECM 555 2001 and newer - Fits for 4.3L Alpha/Bravo, 5.0L, 5.0LX, 5.7L, 350 MAG, 5.7L Alpha/Bravo EFI, 454 MAG MPI, 502 MAG MPI, 7.4L MPI MIE. 8.2L MIE MPI - 1pc Idle Air Control Valve with Gasket ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RXQBV4Y | | ASIN | B07RXQBV4Y | | Best Sellers Rank | #67,530 in Automotive ( See Top 100 in Automotive ) #27 in Car Idle Air Control Valves | | Brand Name | DEF | | Customer Reviews | 4.0 4.0 out of 5 stars (146) | | Customer reviews | 4.0 4.0 out of 5 stars (146) | | Date First Available | 28 November 2019 | | Exterior Finish | Stainless Steel | | Inlet Connection Size | 1 Millimeters | | Inlet Connection Type | Flange | | Item model number | 862998, 18-7701 | | Manufacturer | DEF | | Manufacturer | DEF | | Manufacturer Part Number | TL25-2998 | | Material Type | Metal | | Model Number | 862998, 18-7701 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Number of Ports | 1 | | Outlet Connection Size | 1 Inches | | Outlet Connection Type | Flange | | Package Dimensions | 12.9 x 8.6 x 5.7 cm; 250 g | | Set Name | Valve with Gasket | | Thread Size | 1 inch | | UPC | 749235416599 | | Unit Count | 1.0 Count | | Valve Type | Air Control Valve | ## Product Details - **Brand:** DEF - **Exterior finish:** Stainless Steel - **Inlet connection size:** 1 Millimeters - **Inlet connection type:** Flange - **Material:** Metal ## Images ![DEF Idle Air Control Valve Motor IAC Replace Sierra 18-7701 and Mercruiser 862998 Fits for MerCruiser ECM 555 2001 - Image 1](https://m.media-amazon.com/images/I/71phXqPXddL.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.ro/products/389056499-def-idle-air-control-valve-motor-iac-replace-sierra-18](https://www.desertcart.ro/products/389056499-def-idle-air-control-valve-motor-iac-replace-sierra-18) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-08-29*