PYHAUTO Coolant Reservoir Tank Fits 2003–2007 F-250/F-350 & 2003–2005 Excursion — OEM-fit, Durable Plastic

If your factory overflow tank is cracked, leaking, or the cap no longer seals, this PYHAUTO coolant reservoir tank is a direct-fit replacement designed to restore your vehicle’s cooling system capacity and fluid containment. Built to the OEM part shape and mounting points, the unit arrives ready to install with the correct neck and cap interface for the listed models and engines.

Will this reservoir fit my Ford F-250, F-350, F-450, F-550, or Excursion?

Yes—this tank is produced to match the original mounting pattern and connection locations for the model years and engine options shown. Check the year, model, and engine size in your vehicle to confirm compatibility before ordering.

• Compatible models: 2003–2005 Excursion, 2003–2007 F-250, F-350, F-450, F-550 Super Duty.
• Engine coverage includes 5.4L, 6.0L, and 6.8L variants where applicable.
• Replaces factory part numbers: 603217, 6C3Z8A080B, 3C3Z8A080AE (and formatted variants).

How does the PYHAUTO tank compare to the original equipment?

This reservoir follows the OEM design so the fit, fill neck position, mounting tabs, and hose connections align with factory specifications. Materials and construction are selected for durability so the replacement performs like the original part without custom modification.

• OEM-pattern design for straightforward swap-in installation.
• Durable plastic construction to resist cracking and coolant exposure.
• Includes a compatible cap interface to match original sealing requirements.

What should I expect during installation and maintenance?

Installation is a simple bolt-and-hose swap in most cases: drain or contain any coolant, remove the old tank, transfer any necessary fittings, and secure the new reservoir. After installation, top off and bleed the cooling system per the vehicle manufacturer’s procedure to remove trapped air.

• Typical tools: basic socket set and pliers; no body modifications needed.
• Inspect hoses and sensor fittings and replace clamps if corroded.
• Follow safe coolant handling—dispose of old fluid responsibly.

What warranty and support does PYHAUTO provide?

PYHAUTO backs this reservoir tank with a one-year warranty against manufacturing defects and offers customer support if you have fitment or product questions. Keep your order details on hand when contacting support for faster assistance.

• 1-year limited warranty for peace of mind.
• Customer service available for fitment guidance and troubleshooting.
• Replaceable part numbers listed for cross-reference with dealer references.

Who is this for: This PYHAUTO coolant reservoir tank is intended for owners or technicians working on 2003–2007 Ford Super Duty trucks and 2003–2005 Excursions who need a reliable, OEM-pattern replacement. It suits anyone replacing a cracked or leaking overflow tank, restoring proper coolant containment, or performing preventive maintenance on older trucks. Verify fitment against your vehicle’s model year and engine before purchase to ensure correct compatibility.