Rust Buster Fuel Tank Filler Neck For 1999-2010 Ford F-Series Super Duty RB800004
RB800004- Fits 1999-2010 Ford F-250 Super Duty 8ft Bed
- Fits 1999-2010 Ford F-350 Super Duty 8ft Bed
- Fits all Cab Sizes
- Does not fit Cab & Chassis Models
- Direct OE Replacement
- Replaces the Following Ford Part Number(s)
- 4C3Z-9034-B
- 8C3Z-9034-K
- 8C3Z-9034-KE
- 8C3Z-9034-KF
- F81Z-9034-PA
- F81Z-9034-PB
- YC3Z-9034-KA
Rust Buster Fuel Tank Filler Necks are OE replacements designed to fix rusted, leaking, or damaged factory units. Built for Exact Fit and reliable fuel flow, they restore a secure connection between the fuel tank and fill point while helping eliminate vapor leaks and fueling issues. Durable, corrosion-resistant construction ensures long-term performance and straightforward installation.
Inventory Last Updated: Jul 22, 2026