Quicksilver 8M0125856 Power Steering Cooler
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Quicksilver Power Steering Cooler
The Quicksilver 8M0125856 Power Steering Cooler is a genuine OEM Mercury MerCruiser replacement component engineered to maintain proper operating temperatures in the power steering hydraulic circuit of compatible MPI stern drive engines. As an authorized Quicksilver part, it meets the same specifications as the original factory-installed unit, ensuring reliable, long-lasting performance on the water.
This cooler measures 11.50 inches (292 mm) in overall length and features 1.25-inch (32 mm) outer-diameter hose fittings for straightforward integration with existing plumbing. It also incorporates a dedicated fitting for a water pressure sensor, preserving full diagnostic capability on equipped engine configurations. The unit is a direct replacement for earlier Mercury Marine part numbers 863820T03, 863820T02, 863820T1, and 863820T, simplifying sourcing for older applications still within the covered serial-number range.
Compatibility spans the MCM 4.3L, 5.0L, 5.7L, 6.2L, 8.1L, and 8.2L MPI engine families with serial numbers 0M300000 through 2A528897, covering a wide range of MerCruiser Alpha and Bravo stern drive installations. Selecting the correct power steering cooler is critical to preventing fluid overheating, protecting the steering pump and rack, and maintaining precise helm response under demanding conditions.
Key Features
- Genuine OEM Quicksilver / Mercury MerCruiser replacement part
- 11.50 in. (292 mm) overall length
- 1.25 in. (32 mm) O.D. hose fittings for direct plumbing connection
- Includes fitting for water pressure sensor
- Compatible with MCM 4.3L, 5.0L, 5.7L, 6.2L, 8.1L & 8.2L MPI engines (s/n 0M300000–2A528897)
- Supersedes Mercury Marine part numbers 863820T03, 863820T02, 863820T1, and 863820T
- Sold as a new unit in current production status
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