1. Engine Cooling Components Deals
  2. sku: 20882651341590773
  3. GATES 77FKTRHF

GATES 77FKTRHF Water Flange Gasket Comanche

fits make: Jeep. year: 1986–1992.

77fktrhf Gates Water Flange Gasket Fits Jeep Comanche 1986-1992

( Brand: Gates ), ( Manufacturer Part Number: 77FKTRHF ), ( Part Type: Gasket Flange ), ( Engine: 2.5l 4 Cyl, 4.0l 6 Cyl ), ( Trim: Pioneer, Base, Eliminator, Rwd ), ( Compatible Make/model: Jeep Comanche ), ( Compatible Years: 1986 1987 1988 1989 1990 1991 1992 86 87 88 89 90 91 92 ), ( Fitment Info: Water Flange Gasket - ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Read Full Description To Confirm Fitment ), ( Cs-sku: 400 )

Review GATES Water Flange Gasket Jeep Comanche fits 1986–1992

The **Gates 77FKTRHF Water Flange Gasket** is a meticulously engineered, high-performance replacement part designed specifically for the **1986 through 1992 Jeep Comanche**, ensuring a reliable and leak-free seal for the vehicle s cooling system. Crafted from Gates proprietary **high-temperature, rubber-based composite material**, this gasket is built to withstand the demanding conditions of under-the-hood environments, including exposure to coolant, heat, and vibration, while maintaining long-term durability. The **77FKTRHF** is a precision-fit part, meticulously calibrated to match the exact dimensions of the original equipment manufacturer (OEM) gasket, eliminating gaps and ensuring a perfect seal between the water pump flange and the engine block or transmission housing. Its **reinforced construction** prevents warping, cracking, or premature degradation, which is critical for preventing coolant leaks a common issue in older Jeep models prone to wear and tear. Whether installed during routine maintenance, a cooling system overhaul, or as a preventive measure, this gasket provides a **tight, secure barrier** that helps preserve engine efficiency and prevents overheating, a critical concern for the Comanche s aging cooling components. Gates reputation for quality and innovation ensures that this gasket delivers **superior performance** compared to generic aftermarket alternatives, offering Jeep owners peace of mind and confidence in their vehicle s reliability. Ideal for both professional mechanics and DIY enthusiasts, the **77FKTRHF** is a straightforward, hassle-free upgrade that extends the lifespan of the cooling system and protects against costly repairs.

### **Pros and Cons of buying a Gates 77FKTRHF Water Flange Gasket for a 1986-1992 Jeep Comanche**

#### **Pros:**

1. **High Quality and Durability** Gates is a well-known manufacturer of automotive gaskets and seals, known for producing parts that meet or exceed OEM standards. This gasket is designed to provide a reliable seal, reducing the risk of leaks in the water pump or cooling system.

2. **Direct Fitment** The part is specifically listed as a direct replacement for the 1986-1992 Jeep Comanche, meaning it should install without modifications. This eliminates the need for customization or additional machining, saving time and effort.

3. **Prevents Cooling System Failures** A failing water flange gasket can lead to coolant leaks, overheating, and potential engine damage. Replacing it proactively can extend the life of the water pump and cooling system components.

4. **Ease of Installation** Since it is a gasket rather than a more complex component (like a water pump), replacing it is generally a straightforward DIY job for those with basic mechanical skills. It typically requires removing the water pump, cleaning the mating surfaces, and installing the new gasket.

5. **Cost-Effective Alternative to Full Replacement** If the water pump itself is still functional, replacing just the gasket is a cheaper solution than buying a new water pump assembly.

6. **Widely Available** Gates parts are stocked by many auto parts retailers, both online and in-store, making it easy to purchase without long wait times.

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#### **Cons:**

1. **Potential for Improper Installation** If the gasket is not installed correctly (e.g., not properly seated, over-torqued, or contaminated with debris), it may leak. This requires careful handling and proper surface preparation.

2. **Limited Lifespan** While Gates gaskets are durable, they are not designed to last indefinitely. If the water pump is old or worn, the gasket may fail again sooner rather than later, necessitating further maintenance.

3. **Compatibility Concerns** While the part is listed for your Jeep model, there is always a small chance of fitment issues if the vehicle has been modified or if the original gasket was an aftermarket part. Always verify the part number and application before purchasing.

4. **Requires Disassembly** Replacing the gasket means removing the water pump, which involves draining coolant, disconnecting hoses, and potentially removing the timing belt or serpentine belt (depending on the engine). This can be time-consuming for inexperienced DIYers.

5. **Cost of Additional Materials** Beyond the gasket itself, you may need new bolts, gasket maker (for sealing), and possibly a new water pump if it is already failing. These extras add to the overall cost.

6. **Risk of Overlooking Underlying Issues** If the water pump or other cooling system components (like the thermostat or hoses) are degraded, replacing just the gasket may not fully resolve the problem. A thorough inspection is recommended.

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### **Conclusion:**

The **Gates 77FKTRHF water flange gasket** is a solid choice for a 1986-1992 Jeep Comanche if you are experiencing or suspecting a leak in the water pump area. It offers a balance of quality, ease of installation, and cost-effectiveness for a direct replacement part. However, the success of the replacement depends on proper installation and addressing any underlying issues in the cooling system.

If you are comfortable with basic mechanical work and have the necessary tools, this gasket is a practical solution. For those less experienced, consulting a mechanic or following detailed step-by-step guides can help ensure a successful installation.

### **Recommendation:**

- **Buy the Gates gasket** if you need a reliable, OEM-quality replacement and are confident in your ability to install it correctly.

- **Inspect the water pump** while the system is disassembled if it shows signs of wear (leaking seals, corrosion, or excessive play), consider replacing it alongside the gasket to prevent future issues.

- **Use a gasket sealer** (like Permatex or Liquid Gasket) to ensure a proper seal, especially if the mating surfaces are rough or corroded.

- **Drain and flush the cooling system** before reinstalling to remove old coolant and debris that could contaminate the new gasket.

- **Torque bolts to specification** to avoid overtightening, which can crush the gasket or damage the water pump housing.

If you are unsure about the installation process, hiring a mechanic may be worth the cost to avoid potential leaks or further damage. Otherwise, this is a well-regarded part for the job.

Details:

Gates Water Flange Gasket fits Jeep Comanche 1986 - 1992 77FKTRHF: Brand: condition: New Notes: Water Outlet Gasket, Detailed Applications Years: Vehicle: Sub model: Engine: 1990 Jeep ComanchePioneer4.0L 6 Cyl, ComancheBase4.0L Comanche Eliminator RWD, 1987 Jeep Comanche4.0L 1986 - 1992 Jeep Comanche, 1986 - 1987, Comanche2.5L 4 Cyl.

part #: 77fktrhf price

  • $17.53

specifications ocoosys:

  • for makes: Jeep
  • for years: 1986-1992
  • brand: Gates
  • mpn: 77fktrhf
  • part type: Gasket Flange
  • engine: 2.5l 4 Cyl, 4.0l 6 Cyl
  • trim: Pioneer, Base, Eliminator, Rwd
  • compatible make/model: Jeep Comanche
  • compatible years: 1986 1987 1988 1989 1990 1991 1992 86 87 88 89 90 91 92
  • fitment info: Water Flange Gasket -
  • manufacturer warranty: 12 Month Warranty
  • attention: Read Full Description To Confirm Fitment
  • cs-sku: 400

shipping ocoosys:

  • service: Economy
  • type: Fixed
  • transit: 3-7 Days
  • cost: $0.00
  • class: Economy

general ocoosys:

  • condition: New
  • Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components

seller ocoosys:

  • city: New Bedford, Massachusetts
  • rating: 99.2%
  • # reviews: 23881

returns ocoosys:

  • time: 30 Days
  • policy: Returns Accepted
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offer ocoosys:

  • options: Ship-to-home
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  • availability: In Stock
  • started: April 7, 2026
  • quantity: 1
for makes: jeep, for years: 1986-1992, part type: gasket flange, engine: 2.5l 4 cyl, 4.0l 6 cyl, trim: pioneer, base, eliminator, rwd, compatible make/model: jeep comanche, compatible years: 1986 1987 1988 1989 1990 1991 1992 86 87 88 89 90 91 92, fitment info: water flange gasket -, manufacturer warranty: 12 month warranty, attention: read full description to confirm fitment, cs-sku: 400,
category: auto parts > car truck parts accessories > engine cooling components, sku: 20882651341590773,
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1 offer $17.53 USD
  • New. Offer #1 priced at $17.53 + $0.00 shipping estimate = $17.53* total. 1986-1987, 1990 Jeep Comanche 2.5L 4 Cyl. 1990 Jeep Comanche Pioneer 4.0L 6 Cyl.FREE SHIPPING

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