How to Service and Repair the Main Bearing Crankshaft Seal on Mercury Mountaineer?

A repair or service of the crankshaft main bearing seal requires flexplate removal first and then removal of both spacer plate and flexplate-to-crankshaft spacer. The original crankshaft rear seal lacks a metal speedy sleeve therefore removal of the sleeve is necessary when installing a replacement seal which contains one. Two screwdrivers or smaller pry bars should be used to safely remove the speedy sleeve by treating the crankshaft rear seal running surface with great caution to prevent scratching and damage which could produce oil leaks. The installation requires using an Oil Seal Remover to remove the crankshaft rear seal. A proper installation of a new crankshaft rear seal that contains a speedy sleeve requires cleaning the crankshaft rear sealing surface with extra-fine emery cloth or extra-fine 0000 steel wool followed by engine oil lubrication before each step. Fit the Adapter for 303-579 while using the Crankshaft Rear Oil Seal Screws which enables you to place the crankshaft rear seal on the adapter with the speedy sleeve installed. The speedy sleeve should be positioned on the crankshaft rear seal before insertion through the Crankshaft Rear Oil Seal Installer. The repair process concludes with reinstallation of the flexplate-to-crankshaft spacer along with the spacer plate and finally the flexplate.

OEM Mercury Mountaineer Crankshaft Seal

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5 Crankshaft Seals found

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Mercury Mountaineer Rear Main Seal Part Number: F5TZ-6701-A
$31.53 MSRP: $44.72
You Save: $13.19 (30%)
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal, Rear; Crankshaft Seal; Rear Seal; Oil Pan Rear Seal; Engine Crankshaft Seal
- Position: Rear
- Replaces: F77Z-6701-AA, D7RZ-6701-A, F77Z-6701-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2010 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Mountaineer Rear Main Seal Part Number: F4AZ-6701-A
$29.36 MSRP: $41.65
You Save: $12.29 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal, Rear; Timing Cover Gasket; Timing Cover Seal; Oil Seal; Crankshaft Seal; Rear Seal; Timing Cover Seal; Oil Pan Seal.
- Position: Rear
- Replaces: F3AZ-6701-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2010 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer Rear Main Seal Retainer Part Number: 6C3Z-6K301-A
$45.47 MSRP: $66.18
You Save: $20.71 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal; Oil Pan Rear Seal
- Manufacturer Note: Gasket Is RTV. Refer To Workshop Manual For Proper Specs
- Replaces: 3L3Z-6K301-AA, 3L3Z-6K301-CA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2008 Mercury Mountaineer | Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer Rear Main Seal Part Number: F1SZ-6701-A
$46.60 MSRP: $66.67
You Save: $20.07 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal, Rear; Timing Cover Gasket; Timing Cover Seal; Oil Seal; Crankshaft Seal; Rear Seal; Timing Cover Oil Seal; Engine Crankshaft Seal
- Position: Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Mountaineer Rear Main Seal Part Number: 6L3Z-6K301-AA
$39.80 MSRP: $57.93
You Save: $18.13 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal; Crankshaft Seal; Rear Main Seal Retainer
- Replaces: 3L3Z-6K301-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2010 Mercury Mountaineer | Premier | 8 Cyl 4.6 L GAS

Mercury Mountaineer Crankshaft Seal

OEM Crankshaft Seal boasts unmatched quality. Each part goes through full quality checks. They adhere to Mercury's official factory standards. These steps remove flaws and inconsistencies. So you can get Crankshaft Seal with long life and a perfect fit. Come to our website and find genuine Mercury Mountaineer parts. We keep a wide inventory of OEM Mountaineer parts at the highly affordable prices. It's easy to search, compare, and pick what you need. You'll love the clear info and simple checkout. We offer top-rated customer service, and we reply fast. We also ship promptly to ensure your order arrives on time.

Here is the Mercury Mountaineer Crankshaft Seal which is an important part that defines the endurance and power of the Mercury Mountaineer series. Located at the front side of the engine, this Crankshaft Seal is designed very carefully; come with the purpose of minimizing oil leakage from the crankcase. Designed and made from metal rubber the Crankshaft Seal reduces wear and tear on the Mercury Mountaineer inner mechanism and thus boosts its efficiency and safety. This versatility and flexibility can be attributed to the fact that it fits all the various types of Mountaineer models that Ford manufactured and sold from the period between 1996 and 2010. Over the years, the Mercury Mountaineer brand went through three generations and through these generations, the Crankshaft Seal remained a very important component and as a sign of the manufacturers' quality drive, better materials were incorporated into the design of the seal. A faulty Crankshaft Seal results in a number of problems with the engine hence calling for replacement as soon as possible. Interestingly, this car has a great mechanical part known as the Mercury Mountaineer Crankshaft Seal which is uniquely designed to be tough to endure the test of time and the daily brutal use in the automobile market making the Mountaineer to remain an SUV of choice by many. As with all Mercury automobile spare parts, the Mercury Mountaineer Crankshaft Seal has also been designed to last long, be efficient and give the assurance to drivers that their automobiles are in good hands.

Mercury Mountaineer Crankshaft Seal Parts and Q&A

Rear Main Seal
F5TZ-6701-A
Q: How to Service and Repair the Main Bearing Crankshaft Seal on Mercury Mountaineer?
A:
A repair or service of the crankshaft main bearing seal requires flexplate removal first and then removal of both spacer plate and flexplate-to-crankshaft spacer. The original crankshaft rear seal lacks a metal speedy sleeve therefore removal of the sleeve is necessary when installing a replacement seal which contains one. Two screwdrivers or smaller pry bars should be used to safely remove the speedy sleeve by treating the crankshaft rear seal running surface with great caution to prevent scratching and damage which could produce oil leaks. The installation requires using an Oil Seal Remover to remove the crankshaft rear seal. A proper installation of a new crankshaft rear seal that contains a speedy sleeve requires cleaning the crankshaft rear sealing surface with extra-fine emery cloth or extra-fine 0000 steel wool followed by engine oil lubrication before each step. Fit the Adapter for 303-579 while using the Crankshaft Rear Oil Seal Screws which enables you to place the crankshaft rear seal on the adapter with the speedy sleeve installed. The speedy sleeve should be positioned on the crankshaft rear seal before insertion through the Crankshaft Rear Oil Seal Installer. The repair process concludes with reinstallation of the flexplate-to-crankshaft spacer along with the spacer plate and finally the flexplate.