Sherwood Cover 12220 – Genuine Replacement Pump Cover
When a cooling pump starts losing suction or leaking at the housing, the cover is often the first place to look. The Sherwood 12220 cover is a genuine replacement component designed to restore proper sealing and flow performance in Sherwood-brand pumps used across a wide range of diesel engine cooling applications, from marine vessels to industrial equipment. Made to the same specifications as the original factory part, it fits directly onto compatible Sherwood pump bodies without modification, giving technicians and boat owners a straightforward way to complete a pump rebuild correctly the first time.
Pump covers take a surprising amount of wear over time. Even when the impeller and bearings still look fine, a scored or pitted cover surface can quietly rob a pump of pressure, leading to overheating problems that are easy to misdiagnose. Replacing the cover along with other wear items during a routine service interval helps keep flow rates where they need to be and reduces the chance of a repeat repair a season later. It's a small part, but it plays a big role in keeping the whole cooling circuit doing its job.
Because Sherwood pumps are found on everything from sailboat auxiliary engines to generator sets and heavy equipment, having the correct cover on hand matters. The 12220 is built for durability under continuous water exposure, and pairing it with a fresh gasket or O-ring during installation is generally recommended to get the best seal. For anyone maintaining a Sherwood pump, this cover is a practical, cost-effective way to extend the life of the pump assembly rather than replacing the whole unit.
Key Features
- Genuine Sherwood-fit replacement cover
- Designed for direct mounting on compatible Sherwood pump housings
- Durable construction built to withstand continuous water contact
- Helps restore proper sealing and pump suction performance
- Straightforward drop-in installation during pump service or rebuild
Applications
- Marine engine raw water cooling pumps
- Industrial diesel engine cooling systems
- Generator set cooling pump maintenance
- Routine pump rebuild and preventive maintenance service
- Replacement during minor or major pump repair kits
Specifications
- Part Type: Pump cover / cover plate
- Brand: Sherwood
- Part Number: 12220
- Material: Corrosion-resistant metal construction typical of Sherwood cover components
- Compatibility: Sherwood pump housings using the 12220 cover configuration
- Recommended Use: Paired with new gasket/O-ring during installation
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