Engineered specifically for 2011 through 2026 Ford F-250, F-350, F-450, and F-550 Super Duty trucks powered by the 6.7L Powerstroke V8 turbo diesel engine, the Genuine Ford Secondary Engine Auxiliary Water Pump Assembly (Part # BC3Z-8501-C / Motorcraft PW-504) powers the vehicle's dedicated low-temperature cooling system. Unlike conventional diesel cooling layouts, the 6.7L Powerstroke platform separates thermal management into two isolated circuits. While the primary pump manages the high-temperature engine block, heads, and oil cooler, this mechanical secondary pump powers the low-temperature circuit dedicated to the liquid-to-air charge air cooler (CAC), fuel cooler, transmission fluid heat exchanger, and secondary EGR cooler.

Operating on the lower accessory belt drive, the secondary water pump is critical for maintaining low intake air temperatures (IATs) and preventing fuel system heat soak under heavy towing and high-ambient conditions. Over high operating hours, mechanical pump seals weep coolant from the bearing snout or develop bearing play under belt tension. Installing a genuine Tier-1 Ford assembly ensures factory-spec coolant flow through the intercooler core, includes a factory-installed drive pulley and perimeter seal, and installs with zero core charge.

Key Features & Benefits

• Genuine Ford OEM / Motorcraft Assembly: Built to exact factory specifications for dependable low-temperature circuit flow and thermal stability under heavy loads.
• Protects Low-Temp Critical Components: Circulates coolant through the liquid-to-air intercooler (CAC), fuel rail cooler, transmission fluid cooler, and secondary EGR circuit.
• Pre-Pressed Drive Pulley Included: Features a factory-installed and balanced serpentine pulley, eliminating the need for specialized pulley puller and press tools.
• Unitized Mechanical Seal: Incorporates premium ceramic-faced seals to eliminate premature weeping, coolant loss, and front accessory belt contamination.
• Factory Perimeter Gasket Included: Ships with an OEM-grade rubber profile seal to ensure a leak-free seal directly against the front engine cover.
• Broad Application Coverage: Fits 2011 through 2026 single-alternator 6.7L Powerstroke configurations.
• Zero Core Charge: Sold outright as brand-new genuine Ford factory hardware with no core deposit or return required.

Technical Specifications

• Manufacturer / Brand: Ford Motor Company / Motorcraft
• Manufacturer Part Number / SKU: BC3Z-8501-C
• Motorcraft Short Part Number: PW-504 / PW504
• Superseded / Cross-Reference Numbers: BC3Z8501C, BC34-8501-CA, BC34-8501-CB
• Cooling Circuit Application: Secondary (Auxiliary / Low-Temperature) Cooling Loop
• Drive Type: Mechanical Serpentine Belt-Driven Pump
• Housing Material: Precision Die-Cast Aluminum
• Impeller Material: High-Flow Stamped / Machined Steel
• Hardware Included: Pre-Installed Multi-Rib Pulley & Perimeter Profile Gasket
• Truck Platform: 2011–2026 Ford Super Duty (F-250, F-350, F-450, F-550)
• Engine Platform: 6.7L Powerstroke V8 Turbo Diesel (Single Alternator / Without Inverter Config)
• Core Requirement: None
• Warranty: Ford Motorcraft 2-Year / Unlimited-Mile Limited Warranty

Vehicle Fitment & Technical Installation Notes

• 2011–2026 Ford F-250 Super Duty – 6.7L Powerstroke V8 Turbo Diesel
• 2011–2026 Ford F-350 Super Duty – 6.7L Powerstroke V8 Turbo Diesel
• 2011–2026 Ford F-450 Super Duty – 6.7L Powerstroke V8 Turbo Diesel
• 2011–2025 Ford F-550 Super Duty – 6.7L Powerstroke V8 Turbo Diesel
• Fits Model Years: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
• Circuit Verification: Fits the Secondary (Low-Temperature / Auxiliary) Cooling Loop only. Located lower on the front timing cover. (For the Primary High-Temperature engine water pump, reference SKU HC3Z-8501-A for 2017–2019 or BC3Z-8501-F for 2011–2016).
• Alternator Configuration: Designed for vehicles with single alternator systems without dual high-output inverters.
• Installation Tip: Thoroughly clean the engine timing cover sealing groove before mounting the new pump. Lightly seat the new profile gasket into the housing groove without stretching it. Tighten the mounting bolts in an alternating cross pattern to factory torque (89 in-lbs / 10 Nm). Vacuum bleed and fill the secondary cooling reservoir with Motorcraft Yellow Antifreeze/Coolant (WSS-M97B57-A2) to prevent air entrapment inside the charge air cooler core.