2001-2010 Mercury Marine 496/8.1L Magnum Base/HO 3.3L Whipple Supercharger Kit

The 2001-2010 Mercury Marine 496/8.1L Magnum Base/HO 3.3L Whipple Supercharger Kit is designed for compatible SmartCraft PCM555 engines with a standard throttle cable. This kit is not intended for DTS applications.

Built around Whipple twin-screw supercharger technology, this system is designed to deliver instant boost response, strong low-speed torque, faster planing, improved cruising performance, and increased top-end power. Unlike power adders that need RPM before they become effective, the Whipple twin-screw design can generate boost quickly with throttle input, giving the 496/8.1L Magnum platform a broader and more responsive power curve.

The system is designed around approximately 5-6 psi of intercooled boost and is listed to increase power by nearly 50% in supported applications. Whipple includes PCM recalibration to support proper engine management, along with fuel system and sensor upgrades required for the supercharged setup.

This kit includes a 3.3L twin-screw supercharger, massive oversized twin-bore throttle body, PCM recalibration, 2-bar MAP sensor, high-flow fuel injectors, Aeromotive fuel pump, adjustable fuel pressure regulator, fuel cooler, fuel filter, fuel line kit, plug-and-play wiring harness, billet 10-rib adjustable belt system, and billet pulleys.

Key Features

• 3.3L Whipple twin-screw supercharger kit
• Designed for compatible 2001-2010 Mercury Marine 496/8.1L Magnum Base and HO applications
• For SmartCraft PCM555 engines with standard throttle cable
• Not for DTS applications
• Approximately 5-6 psi of intercooled boost
• Listed power increase of nearly 50% in supported applications
• Instant boost response with strong low-RPM torque
• PCM recalibration included
• 2-bar MAP sensor included
• High-flow fuel injectors included
• Aeromotive fuel pump and adjustable regulator included
• Fuel cooler, fuel filter, and fuel line kit included
• Massive oversized twin-bore throttle body
• Billet 10-rib adjustable belt system
• Billet pulleys
• Plug-and-play wiring harness with no cutting or splicing required

Application note: Verify engine model, model year, SmartCraft PCM555 compatibility, throttle control type, DTS/non-DTS configuration, fuel system requirements, boost configuration, cooling system condition, available engine-compartment clearance, and complete installation requirements before ordering. Final power results can vary based on engine condition, boat setup, prop selection, fuel quality, calibration, operating environment, and installation.