Fel-Pro 35625 Engine Coolant Thermostat Seal

Brand Fel-Pro 35625
Fits Ford and Mazda · 8 vehicles

Application-specific materials. Engineered for dependable sealing performance and durability professionals trust.

Premium grade. A sealing solution from Fel-Pro for consistent, vehicle-wide sealing performance.

Thermostat seal. Built for coolant sealing in the cooling system.

Cross-references MAHLE C31758, 113661 and F87Z8255AA for the same application. See all 3.

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Fel-Pro 35625 Engine Coolant Thermostat Seal

Fel-Pro 35625 is a premium engine coolant thermostat seal built for sealing accuracy in cooling system service. It uses application-specific materials and dimensions to support a tight seal where the thermostat housing meets the engine cooling circuit on select Ford Ranger and Mazda B2500 applications.

Key Features

  • Premium-grade thermostat seal for cooling system service
  • Inside diameter: 1.880 in. / 47.7 mm
  • Thickness: 0.256 in. / 6.5 mm
  • Application-specific sealing material for a precise fit
  • Compatible with 1998-2001 Ford Ranger and 1998-2001 Mazda B2500
  • Fel-Pro part number 35625 for thermostat seal replacement

Detailed Description

Fel-Pro 35625 is an engine coolant thermostat seal engineered for vehicles that require a precise sealing surface at the thermostat housing. The listed dimensions, including a 1.880-inch inside diameter and 0.256-inch thickness, help match the sealing interface used in the cooling system. This makes it a direct service part for 1998-2001 Ford Ranger and 1998-2001 Mazda B2500 cooling system repairs. This part cross-references MAHLE C31758 for the same application.

Fel-Pro gaskets are known for application-specific sealing materials that support dependable sealing performance in professional repair work. If you are replacing a thermostat seal on a Ford Ranger or Mazda B2500, Fel-Pro 35625 provides a focused fitment solution for the cooling system.

Common Repair Uses

  • Replacing a leaking thermostat seal at the cooling system housing
  • Addressing coolant seepage around the thermostat connection
  • Restoring a proper seal after thermostat service
  • Correcting sealing issues on 1998-2001 Ford Ranger cooling repairs
  • Correcting sealing issues on 1998-2001 Mazda B2500 cooling repairs

Installation Notes and Tips

Clean the mating surfaces thoroughly before installation and inspect the thermostat housing for corrosion, pitting, or distortion. Verify the seal orientation and dimensions against the removed part before assembly. For best results, follow the vehicle service procedure for the cooling system and refill with the correct coolant after repair.

Quality Assurance

Fel-Pro focuses on vehicle-specific sealing solutions for professional-grade repair work. Part number 35625 is built to match the listed application and dimensional requirements for the supported Ford Ranger and Mazda B2500 fitments.

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2001FordRanger2.5LL4N/A—
2001MazdaB25002.5LL4N/A—
2000FordRanger2.5LL4N/A—
2000MazdaB25002.5LL4N/A—
1999FordRanger2.5LL4N/A—
1999MazdaB25002.5LL4N/A—
1998FordRanger2.5LL4N/A—
1998MazdaB25002.5LL4N/A—
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
MAHLE — C31758113661F87Z8255AA