How to service the rear crankshaft seal with retainer plate on Mercury Grand Marquis?

Depower the fire suppression system and lift the vehicle in order to service the crankshaft rear seal. Take off flexplate, engine-to-transmission spacer plate. Removal of crankshaft oil slinger and rear seal. Install new seal and retainer plate and assemble the parts and ensure that there are no leaks on filling with oil.

How to Service the Rear Crankshaft Seal on Mercury Milan?

Vehicle in neutral on hoist, take off flexplate/flywheel. Drain the oil; replace drain plug to 28 Nm. Take out oil pan then six bolts and rear seal / retainer. Install seal; installer; tighten installer bolts to 10 Nm. Clean, put on 2.5 mm sealant, replace pan (10/20 Nm sequence), replace flexplate/flywheel, replenish oil.

OEM Mercury Crankshaft Seal

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19 Crankshaft Seals found

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Mercury Rear Main Seal Retainer Part Number: CG1Z-6335-B
$47.18 MSRP: $67.50
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Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal
- Replaces: 7T4Z-6K301-A, AT4Z-6K301-B, CG1Z-6K301-A
Fits the following Mercury Models:
- Sable | 2008-2009 | Base, Premier | 6 Cyl 3.5 L GAS
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Mercury Rear Main Seal Part Number: 1S7Z-6A321-B
$56.44 MSRP: $86.70
You Save: $30.26 (35%)
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal, Rear; Crankshaft Seal; Rear Seal; Rear Main Seal Retainer
- Position: Rear
- Replaces: 1S7Z-6D309-AA, 1S7Z-6K301-AA, 1S7Z-6K301-BA
Fits the following Mercury Models:
- Mariner | 2005-2011 | Base, Convenience, Hybrid, Premier | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS
- Milan | 2006-2011 | Base, Hybrid, Premier | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS
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Mercury Oil Seal, Front Part Number: XW4Z-6700-AA
$10.89 MSRP: $15.45
You Save: $4.56 (30%)
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil - Front; Engine Crankshaft Seal, Front; Timing Cover Gasket; Timing Cover Seal; Crankshaft Seal; Front Crank Seal; Timing Cover Oil Seal; Engine Crankshaft Seal
- Position: Front
- Replaces: XW4Z-6700-A
Fits the following Mercury Models:
- Sable | 2008-2009 | Base, Premier | 6 Cyl 3.5 L GAS
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Mercury 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
Fits the following Mercury Models:
- Mountaineer | 1998-2010 | 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 Rear Main Seal Retainer Part Number: F5RZ-6K318-A
$35.75 MSRP: $51.15
You Save: $15.40 (31%)
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Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal; Crankshaft Seal Retainer
- Manufacturer Note: INCL. 6701 SEAL
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base | 4 Cyl 2.0 L GAS
- Mystique | 1995-2000 | Base, GS, GS Spree, LS | 4 Cyl 2.0 L GAS
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Mercury Rear Main Seal Part Number: F4AZ-6701-A
$29.36 MSRP: $41.65
You Save: $12.29 (30%)
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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
Fits the following Mercury Models:
- Cougar | 1999-2002, 1994-1997 | Base, S, V6, XR-7 | 6 Cyl 2.5 L GAS, 8 Cyl 4.6 L GAS
- Grand Marquis | 1992-2011 | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
- Marauder | 2003-2004 | Base | 8 Cyl 4.6 L GAS
- Mariner | 2005-2011 | Base, Luxury, Premier | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
- Milan | 2006-2011 | Base, Premier | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
- Montego | 2005-2007 | Luxury, Premier | 6 Cyl 3.0 L GAS
- Mountaineer | 2002-2010 | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
- Mystique | 1995-2000 | Base, GS, GS Spree, LS, LS Young America | 6 Cyl 2.5 L GAS
- Sable | 1996-2005 | G, GS, LS, LS Premium, Platinum Edition | 6 Cyl 3.0 L GAS
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Mercury Rear Main Seal Part Number: AT4Z-6701-A
$36.79 MSRP: $53.55
You Save: $16.76 (32%)
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal, Rear; Crankshaft Seal; Rear Seal; Engine Crankshaft Seal
- Position: Rear
- Replaces: 7T4Z-6701-AA
Fits the following Mercury Models:
- Sable | 2008-2009 | Base, Premier | 6 Cyl 3.5 L GAS
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Mercury Rear Main Seal Retainer Part Number: 6C3Z-6K301-A
$45.47 MSRP: $66.18
You Save: $20.71 (32%)
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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
Fits the following Mercury Models:
- Mountaineer | 2006-2008 | Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Rear Main Seal Part Number: F37Z-6701-A
$27.79 MSRP: $39.42
You Save: $11.63 (30%)
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal, Rear; Oil Pan Seal; Crankshaft Seal; Rear Seal; Oil Pan Rear Seal; Seal; Engine Crankshaft Seal
- Position: Rear
- Replaces: E8DZ-6701-A
Fits the following Mercury Models:
- Lynx | 1984-1987 | Base, GL, GS, L, LS, LTS, RS, XR3 | 4 Cyl 1.6 L GAS, 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L DIESEL
- Sable | 1986-2005 | G, GS, LS, LS Premium, LTS | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
- Topaz | 1984-1994 | Base, GS, GS AWD, LS, LS AWD, LTS, LTS AWD, Sport, Sport AWD, XR5, XR5 AWD | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Rear Main Seal Part Number: F1SZ-6701-A
$44.52 MSRP: $66.67
You Save: $22.15 (34%)
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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 Oil Seal; Engine Crankshaft Seal
- Position: Rear
Fits the following Mercury Models:
- Cougar | 1989-1997 | LS, XR-7 | 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS
- Monterey | 2004-2007 | Base, Convenience, Luxury, Premier | 6 Cyl 4.2 L GAS
- Mountaineer | 1997-2001 | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
- Sable | 1992-1995, 1989 | GS, LS | 6 Cyl 3.8 L GAS
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Mercury Rear Main Seal Part Number: 6L3Z-6K301-AA
$39.80 MSRP: $57.93
You Save: $18.13 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal; Crankshaft Seal; Rear Main Seal Retainer
- Replaces: 3L3Z-6K301-BA
Fits the following Mercury Models:
- Mountaineer | 2009-2010 | Premier | 8 Cyl 4.6 L GAS
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Mercury Rear Main Seal Part Number: E5ZZ-6701-A
$15.53 MSRP: $21.14
You Save: $5.61 (27%)
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal; Crankshaft Seal
Fits the following Mercury Models:
- Capri | 1984-1986 | 5.0, GS, RS, RS Turbo | 4 Cyl 2.3 L GAS, 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS
- Colony Park | 1987 | GS, LS | 8 Cyl 5.0 L GAS
- Cougar | 1990, 1984-1988 | Base, LS, XR-7 | 4 Cyl 2.3 L GAS, 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS
- Grand Marquis | 1984-1987 | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS
- Marquis | 1984-1986 | Base, Brougham | 4 Cyl 2.3 L GAS, 4 Cyl 2.3 L LPG, 6 Cyl 3.8 L GAS
- Sable | 1990, 1988 | GS, LS | 6 Cyl 3.8 L GAS
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Mercury Oil Seal, Front Part Number: CM5Z-6700-E
$8.94 MSRP: $12.68
You Save: $3.74 (30%)
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil - Front; Engine Crankshaft Seal; Timing Cover Gasket & Seal.; Front Crank Seal; Front Seal; Front Cover Seal; Timing Cover Front Seal
- Position: Front
- Replaces: 1S7Z-6700-AA, CM5Z-6700-C, 9E5Z-6700-A, CM5Z-6700-A
Fits the following Mercury Models:
- Mariner | 2005-2011 | Base, Convenience, Hybrid, Premier | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS
- Milan | 2006-2011 | Base, Hybrid, Premier | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS
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Mercury Rear Main Seal Part Number: F3XY6701B
$19.01 MSRP: $25.87
You Save: $6.86 (27%)
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal; Crankshaft Seal
Fits the following Mercury Models:
- Villager | 1999-2002, 1993-1995 | Base, Estate, GS, LS, Nautica, Sport | 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS
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Mercury Fender Bracket, Driver Side Part Number: F3LY16D157A
$27.60 MSRP: $37.56
You Save: $9.96 (27%)
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Product Specifications
- Other Name: Bracket Fender Mounting; Upper Rail Upper Bracket; Bracket - Fender Mounting
- Position: Driver Side
Fits the following Mercury Models:
- Cougar | 1989-1997 | LS, XR-7 | 6 Cyl 3.8 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS
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Mercury Rear Main Seal Part Number: E7FZ-6701-A
$27.33 MSRP: $39.78
You Save: $12.45 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal, Rear; Rear Seal; Engine Crankshaft Seal; Crankshaft Seal
- Manufacturer Note: #E7EE-A1A-USED W/ ASY. #FOEE-6K301-AA
- Position: Rear
Fits the following Mercury Models:
- Lynx | 1984-1987 | Base, GL, GS, L, LS, LTS, RS, XR3 | 4 Cyl 1.6 L GAS, 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L DIESEL
- Tracer | 1991-1999 | Base, GS, LS, Trio | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS
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Mercury Rear Main Seal Part Number: F5RZ-6701-A
$15.44 MSRP: $21.00
You Save: $5.56 (27%)
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal; Crankshaft Seal
- Manufacturer Note: Crankshaft Rear
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base | 4 Cyl 2.0 L GAS
- Mystique | 1995-2000 | Base, GS, GS Spree, LS | 4 Cyl 2.0 L GAS
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Mercury Rear Main Seal Part Number: XF5Z-6701-AA
Product Specifications
- Other Name: Seal Assembly - Crankshaft; Engine Crankshaft Seal; Crankshaft Seal; Seal Assembly - Crankshaft Oil
Fits the following Mercury Models:
- Villager | 1996-1998 | GS, LS, Nautica | 6 Cyl 3.0 L GAS
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Mercury Rear Main Seal Part Number: F1CZ6701B
Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil; Engine Crankshaft Seal; Timing Cover Gasket; Timing Cover Seal; Crankshaft Seal; Front Cover Seal
Fits the following Mercury Models:
- Capri | 1991-1994 | Base, XR2 | 4 Cyl 1.6 L GAS
- Tracer | 1991-1996 | LTS | 4 Cyl 1.8 L GAS

Mercury Crankshaft Seal Parts and Q&A

Rear Main Seal
F4AZ-6701-A
Q: How to service the rear crankshaft seal with retainer plate on Mercury Grand Marquis?
A: Depower the fire suppression system and lift the vehicle in order to service the crankshaft rear seal. Take off flexplate, engine-to-transmission spacer plate. Removal of crankshaft oil slinger and rear seal. Install new seal and retainer plate and assemble the parts and ensure that there are no leaks on filling with oil.
Rear Main Seal
1S7Z-6A321-B
Q: How to Service the Rear Crankshaft Seal on Mercury Milan?
A: Vehicle in neutral on hoist, take off flexplate/flywheel. Drain the oil; replace drain plug to 28 Nm. Take out oil pan then six bolts and rear seal / retainer. Install seal; installer; tighten installer bolts to 10 Nm. Clean, put on 2.5 mm sealant, replace pan (10/20 Nm sequence), replace flexplate/flywheel, replenish oil.