HomeBelts and Cooling > FiltersBaldwin BW5178 Cooling System Filter
Part #: BW5178

Baldwin BW5178 Cooling System Filter

🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$23.20Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Cooling System Filter for Mack Engines and Trucks

The Baldwin BW5178 cooling system filter is designed specifically for Mack engines and trucks, providing efficient filtration to maintain optimal engine performance. This filter features precise dimensions and an integral gasket to ensure a secure fit and reliable operation.

  • Contains 10 units per box for fleet or multiple vehicle maintenance
  • Compatible with Mack engines and trucks
  • Height: 5 3/8 inches (136.5 mm)
  • Outside diameter: 3 11/16 inches (93.7 mm)
  • Integral gasket model G381-A for leak-free sealing
  • Thread size: 4-mar for proper installation
  • Replaces GMC 6439296, Mack 25MF428 and 25MF428-A, White 27-077522

Product Details and Specifications

The BW5178 cooling system filter by Baldwin is engineered to meet the filtration needs of heavy-duty Mack engines and trucks. With a height of 5 3/8 inches and an outside diameter of 3 11/16 inches, this filter fits precisely within the cooling system housing. The integral gasket (G381-A) ensures a tight seal to prevent coolant leaks and maintain system pressure. The 4-mar thread size allows for secure attachment, reducing the risk of loosening during operation. This filter replaces several OEM part numbers including GMC 6439296 and Mack 25MF428 series, making it a reliable aftermarket option for maintenance and replacement.

Applications and Problem Solving

  • Compatible with Mack engines and trucks requiring reliable cooling system filtration
  • Helps prevent coolant contamination and buildup that can lead to overheating
  • Reduces risk of engine damage caused by debris in the cooling system
  • Maintains proper coolant flow and system pressure for efficient engine operation
  • Suitable for fleet maintenance with 10 units per box

Installation Notes and Tips

When installing the Baldwin BW5178 cooling system filter, ensure the integral gasket is properly seated to avoid leaks. Use the correct 4-mar thread engagement to secure the filter firmly without over-tightening. It is recommended to replace the filter during routine cooling system maintenance or when signs of contamination or reduced coolant flow are observed. Always verify compatibility with your specific Mack engine or truck model before installation.

Quality Assurance and Warranty

Baldwin filters are manufactured to meet industry standards for filtration and durability. The BW5178 cooling system filter undergoes rigorous quality control to ensure consistent performance. While specific warranty details are not provided, Baldwin products typically come with manufacturer support for defects and workmanship. For detailed warranty information, consult Baldwin's official documentation or authorized distributors.

BrandBaldwin
Part NumberBW5178
Contains10 units bte
Fits"mack engines, trucks"
Height5 3/8
Height (mm)136.5
Integral Gasket{g381-a}
Outside Diameter 13 11/16
Outside Diameter 1 (mm)93.7
Per Inch20
Replaces"gmc 6439296; mack 25mf428, 25mf428-a; white 27-077522"
Thread4-mar

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.