Description
Restore a secure connection between your RV's holding tank and waste valve with the Thetford 50559 Waste Holding Tank Flange. This genuine OEM replacement flange is designed for use with Thetford fiberglass waste holding tanks, providing a reliable mounting point for the waste valve assembly.
Manufactured from durable white ABS plastic, this flange is engineered to withstand the harsh conditions of RV waste systems while maintaining a leak-resistant connection. The Thetford 50559 supersedes the discontinued Thetford 33083, making it the current factory replacement.
Whether you're replacing a damaged flange during a holding tank repair or restoring an older RV sanitation system, this OEM component ensures proper fit and long-lasting performance.
Features & Benefits
- Genuine Thetford OEM replacement part
- Designed for Thetford fiberglass waste holding tanks
- Provides secure connection point for RV waste valve assembly
- Durable white ABS plastic construction resists corrosion and chemicals
- Direct replacement for discontinued Thetford 33083
- Helps maintain a leak-free waste system
- Factory fit for dependable installation
Product Specifications
- Manufacturer: Thetford
- Part Number: 50559
- Supersedes: 33083
- Product Type: Waste Holding Tank Flange
- Application: Connects waste valve to fiberglass holding tank
- Material: ABS Plastic
- Color: White
- Quantity: 1
Fits These Applications
Compatible with:
- Thetford fiberglass RV waste holding tanks
- RV waste systems utilizing Thetford fiberglass holding tanks
- Replaces Thetford part 33083
Note: Please verify compatibility with your holding tank before ordering.
Common Reasons for Replacement
- Cracked or broken holding tank flange
- Leaking waste valve connection
- Damaged flange mounting surface
- Holding tank restoration or repair
- Replacing discontinued Thetford 33083 flange
What's Included
- (1) Thetford 50559 Waste Holding Tank Flange
Installation Notes
- Remove the existing damaged flange.
- Clean the tank mounting surface thoroughly before installation.
- Install using the appropriate sealant and hardware (not included unless otherwise specified).
- Verify a leak-free connection before returning the RV to service.
Why Buy from RVToiletParts.com?
At RVToiletParts.com, we specialize exclusively in RV toilets, holding tanks, and sanitation system components. We stock genuine OEM Thetford and Dometic parts backed by knowledgeable customer support to help ensure you receive the correct replacement the first time.
Special Order – Estimated 2–4 Week Lead Time
Please note: This is a special order item.
- Estimated lead time: approximately 2–4 weeks
- Lead times may vary based on manufacturer availability
- Special order items are non-cancelable and non-returnable once processed
- Please verify compatibility before placing your order
