Dometic Pump Seal Kit 7/8" - Fits Dometic Water Pumps - Part# 4471004138

DometicSKU: 4471004138
Added to catalog: March 11, 2026
Last product update: June 15, 2026 at 1:57 AM

Sale price$554.32 Regular price$881.37
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This Dometic Pump Seal Kit is the essential replacement component for maintaining your RV's freshwater system. The 7/8" seal kit restores a watertight seal in Dometic water pumps, preventing leaks and ensuring reliable water pressure throughout your rig. If your pump is losing prime, leaking around the shaft, or running dry, this OEM seal kit is the solution.

Key Features

  • 7/8" seal size fits standard Dometic freshwater pump models
  • OEM Dometic part ensures perfect compatibility and performance
  • Prevents water leaks and loss of pump prime
  • Easy installation—no special tools required for most RV owners
  • Extends pump life and maintains water system reliability
  • Genuine replacement component, not an aftermarket substitute

Technical Specifications

Specification Details
Seal Size 7/8"
Part Number 4471004138
Manufacturer Dometic
Type Pump Seal Kit

Frequently Asked Questions

How do I know if my pump seal needs replacement?
Signs include water leaking from around the pump shaft, loss of water pressure, the pump losing prime frequently, or water pooling under your freshwater tank. If your pump runs but delivers weak pressure, a worn seal is often the culprit.
Can I install this seal kit myself?
Yes. Most RV owners can replace the seal kit with basic tools. You'll typically need to remove the pump from the tank, disassemble it, and swap out the old seal for the new one. Consult your Dometic pump manual for step-by-step instructions specific to your model.
Will this kit work on all Dometic water pumps?
This 7/8" seal kit fits standard Dometic freshwater pump models. Always verify your pump's seal size before ordering. If you're unsure, check your RV's documentation or contact our support team with your pump model number.

Why Elkhart RV Parts

We specialize in hard-to-find Dometic replacement parts for RV owners who demand genuine OEM quality. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock authentic Dometic components and provide expert support to help you identify the exact part your system needs. When your water pump seal fails on the road, you need the right part fast. We've got you covered.

100% Authentic OEM Parts

Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

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