Thetford 21066 (Superseded by 50529) Toilet Pump Inlet Tube – Fits Thetford C4 Bellows Pump Toilets - SPECIAL ORDER

Product Overview

The Thetford 21066 Toilet Pump Inlet Tube (now superseded by 50529) is a direct replacement inlet tube designed for Thetford C4 model cassette toilets equipped with a bellows pump system. This OEM replacement tube helps restore proper water flow into the flush pump assembly for reliable manual flushing performance.

Ideal for replacing cracked, clogged, or worn tubing, this component ensures dependable operation of your cassette toilet flush system.

Special Order Item

• Estimated Lead Time: 2–3 Weeks
• Return Policy: This is a special order item and cannot be returned once ordered.

Key Features & Benefits

• Direct Replacement: Supersedes Thetford 21066 with updated part 50529
• Designed for Bellows Pump Systems: Compatible with Thetford C4 manual flush toilets
• Restores Proper Water Flow: Helps maintain reliable flushing operation
• OEM Fit & Function: Engineered to original specifications
• Durable Construction: Built for long-term RV sanitation system use
• Easy Installation: Direct-fit replacement component

Specifications

• Part Number: 21066 (Superseded by 50529)
• Product Type: Toilet Pump Inlet Tube
• Application: Bellows Pump Water Inlet
• Toilet Compatibility: Thetford C4 Cassette Toilets
• Material: Durable Flexible Tubing

Fits These Models

• Thetford C4 Cassette Toilets with Bellows Pump Systems

Common Issues This Part Solves

• Weak or inconsistent flushing
• Cracked or leaking inlet tube
• Restricted or clogged water flow
• Bellows pump not drawing water properly

What’s Included

• (1) Thetford 50529 Toilet Pump Inlet Tube (Replacement for 21066)

Installation Overview

1. Turn off water supply to the toilet
2. Access the bellows pump assembly
3. Remove the old inlet tube
4. Install the new replacement tube securely
5. Test flush operation and inspect for leaks

FAQs

Q: Is Thetford 50529 the same as 21066?
A: Yes—50529 is the direct replacement for the discontinued 21066.

Q: Which toilets does this fit?
A: It is designed for Thetford C4 cassette toilets with bellows pump systems.

Q: What does the inlet tube do?
A: The inlet tube supplies water to the manual bellows flush pump assembly.

Q: What are signs of a damaged inlet tube?
A: Common symptoms include poor flushing, water leaks, or the pump failing to draw water properly.

Why Choose Thetford?

Thetford is a trusted leader in RV sanitation systems, offering OEM replacement parts engineered for reliable performance and long-lasting compatibility.