Description:
PP-863820-T-1 MerCruiser Power Steering Oil Cooler
The 863820-T-1 MerCruiser Power Steering Oil Cooler is a marine shell-and-tube hydraulic oil cooler designed to regulate the temperature of power steering fluid on MerCruiser inboard engines.
Hydraulic steering oil passes through the internal tube bundle while raw seawater flows through the outer shell. This prevents overheating of the power steering system, protecting steering pumps, seals, hoses, and control valves during extended operation and low-speed manoeuvring.
Although visually similar to small heat exchangers, this component does not cool engine coolant and must not be used as an engine heat exchanger.
Suits MerCruiser / Mercury Marine:
• MerCruiser petrol and diesel inboard engines
• Installations fitted with hydraulic power steering systems
• Commonly fitted to 4.3L, 5.0L, 5.7L, 6.2L, 8.1L (496), 350 MAG, 377 MAG, 496 MAG, and similar variants (fitment dependent on steering system)
Replaces / Cross-Reference
• Mercury / MerCruiser: 863820T-1
• Superseded OEM number: 8M0125856