Dometic 385311423 12V S to W Vacuum Pump Conversion Kit, Replaces Sealand 310245

The Dometic 385311423 12V S to W Pump Conversion Kit is designed to upgrade older Dometic Sealand standard S series vacuum pumps to the newer W motor design, restoring reliable vacuum performance to a marine toilet system without replacing the entire pump housing. This conversion kit is built for boat owners and marine technicians who have an aging S series pump that is losing suction or motor performance and want to bring it up to current W motor specification rather than sourcing a full replacement unit.

The kit is compatible with several Dometic/Sealand pump applications, including the T-Series Discharge Pump (317301200), SW Vacuum Pump (317201200), VG2 Vacuum Pump (385310774), VG3/LPVG Vacuum Pump (385311595), and VG4 Vacuum Pump (385311229). Everything needed to complete the conversion is included in one package: a 12 volt motor, pump bellows, bellows clamps, an eccentric screw kit, an O-ring kit, and mounting hardware, so the job can be done with a single part number rather than sourcing individual components separately.

This kit replaces Sealand part numbers 310245 and 385311065, making it a direct upgrade path for systems currently running those pumps. At 6.1 pounds, it ships as a complete assembly kit ready for installation on the applicable Dometic/Sealand vacuum and discharge pumps.

Specifications

• Brand: Dometic
• Manufacturer Part Number: 385311423
• Weight: 6.1 pounds
• Motor Voltage: 12 Volt
• Kit Includes: 12 Volt Motor (385310065), Pump Bellows (385230980), Bellows Clamps (385311226), Eccentric Screw Kit (385310644), O-Ring Kit (385310151), Hardware
• Application: T-Series Discharge Pump 317301200, SW Vacuum Pump 317201200, VG2 Vacuum Pump 385310774, VG3/LPVG Vacuum Pump 385311595, VG4 Vacuum Pump 385311229

Fitment

• T-Series Discharge Pump 317301200
• SW Vacuum Pump 317201200
• VG2 Vacuum Pump 385310774
• VG3/LPVG Vacuum Pump 385311595
• VG4 Vacuum Pump 385311229

Replaces (OEM)

• Sealand 310245
• Sealand 385311065

Frequently Asked Questions

What does the Dometic 385311423 conversion kit do? It converts an older Dometic Sealand standard S series vacuum pump to the newer W motor design, letting you upgrade the pump's motor and internal components instead of replacing the whole unit.

Which pumps is this conversion kit compatible with? The 385311423 kit is designed for the T-Series Discharge Pump 317301200, SW Vacuum Pump 317201200, VG2 Vacuum Pump 385310774, VG3/LPVG Vacuum Pump 385311595, and VG4 Vacuum Pump 385311229.

Is this kit equivalent to Sealand part 310245? Yes, the Dometic 385311423 kit replaces Sealand 310245 as well as Sealand 385311065.

What is included in the box with kit 385311423? The kit includes a 12 volt motor (385310065), pump bellows (385230980), bellows clamps (385311226), an eccentric screw kit (385310644), an O-ring kit (385310151), and hardware.

What voltage motor comes with this conversion kit? A 12 volt motor (part 385310065) is included in the Dometic 385311423 conversion kit.

How much does the 385311423 conversion kit weigh? This Dometic conversion kit weighs 6.1 pounds.

Do I need to replace my whole vacuum pump, or can I convert it? If you have an S series Dometic Sealand vacuum pump, the 385311423 kit lets you convert it to the newer W motor design rather than replacing the entire pump.

Are the bellows and clamps included, or sold separately? Both the pump bellows (385230980) and bellows clamps (385311226) are included in the Dometic 385311423 kit, so no separate purchase is needed for those parts.

Does this kit include an O-ring kit for reassembly? Yes, an O-ring kit (385310151) is included with the 385311423 conversion kit for sealing during reassembly.

Will this kit work on a VG3 or LPVG vacuum pump? Yes, the Dometic 385311423 kit is listed as compatible with the VG3/LPVG Vacuum Pump 385311595.

What OEM numbers does the Dometic 385311423 replace? This kit replaces Sealand part numbers 310245 and 385311065.