FASWORX 863802T2 Air-Actuated Water Distribution Housing Assembly Compatible with MerCruiser 4.3L 5.0L 5.7L 6.2L V6 V8 MPI Engines, Replaces 863444T2 863444T1 - Marine Closed Cooling Systems

FASWORX Air-Actuated Water Distribution Housing Assembly (Replaces # 863802T2) Protect your marine engine from overheating with the FASWORX Air-Actuated Water Distribution Housing. Over time, original factory housings can crack, warp, or corrode, leading to severe cooling system failures. Our marine-grade replacement is built to exact OEM standards to restore reliable water flow to your MerCruiser's closed cooling system. IMPORTANT: Is this the right part for your boat? This is one of the most commonly mis-ordered parts in marine maintenance. BUY THIS PART (#863802T2) if your boat features an Air-Actuated drain system. You will see distinct white and orange air fittings on the side of your current housing. DO NOT BUY THIS PART if your boat uses a manual drain or rod-actuated system. You will need part #863631T1 instead. Compatibility Guide (Air-Actuated MPI Engines Only): 4.3L V6: MPI (Alpha / Bravo / EC) | 1998–Present 4.5L V6: MPI 200 & 250 (Alpha / Bravo / EC) | 2010–Present 5.0L V8: MPI (Alpha / Bravo / EC) | 1998–Present 5.7L V8: 350 MAG MPI (Alpha / Bravo / Horizon / MIE) | 1998–Present 6.2L V8: 377 MAG MPI & MX 6.2L (Bravo / Horizon / MIE) | 1999–Present 6.3L V8: 383 MAG Stroker (Inboard) | 2000–Present Note: Please verify your specific engine serial number against a marine parts catalog to guarantee fitment prior to installation.

• EXACT OEM REPLACEMENT: Directly replaces Mercury Marine and MerCruiser OEM part numbers 863802T2, 863444T2, and 863444T1. Recmar: REC863802T2. Engineered to match factory specifications for a seamless fit and restored cooling system performance.
• BROAD ENGINE COMPATIBILITY: Fits a wide range of MerCruiser V6 and V8 MPI (Multi-Port Injection) engines, including 4.3L, 4.5L, 5.0L, 5.7L (350 MAG), 6.2L (377 MAG / MX 6.2L), and 6.3L (383 MAG Stroker) Alpha, Bravo, and Inboard models.
• CRITICAL FITMENT WARNING: This assembly is strictly for AIR-ACTUATED drain systems (identifiable by the white and orange air fittings). It will NOT fit manual or rod-actuated drain systems. If your boat uses manual drain plugs, you need part number 863631T1 instead.
• MARINE-GRADE DURABILITY: Constructed from high-quality, corrosion-resistant aluminum alloy and premium high-impact composite plastics to withstand harsh marine environments and extreme engine temperatures.
• READY TO INSTALL: Comes fully assembled with the necessary air-actuation fittings integrated into the housing for a straightforward, drop-in repair of your closed cooling system. (Always verify your specific engine serial number before purchasing).