How to service and repair the catalytic converter on Mercury Mountaineer?

In order to fix the catalytic converter, lift the vehicle and remove the oxygen and catalyst monitor sensors. Take the bolts of the heat shield out, hold up the transmission, and dissolve the muffler. Disassemble converter assembly, replace anti-seize sensors, reassemble parts and tighten all the bolts, then lower the automobile.

How should one service the catalytic converter to ensure proper installation and avoid damage on Mercury Mountaineer?

Do not use oil/grease on isolators. Use new torque-prevailing fasteners and specified torques. Hoist and support exhaust, align tab/notch, remove clamps, muffler-to-cat hardware, crossmember and shields, then detach sensors. Clean flares, support converter, transfer sensors with anti-seize, replace stud nuts. Reassemble per torques, start engine, check/align for leaks.

OEM Mercury Mountaineer Catalytic Converter

Cat. Converter

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25 Catalytic Converters found

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Mercury Mountaineer Catalytic Converter, Driver Side Part Number: YL5Z-5E212-MA
Product Specifications
- Other Name: Converter Assembly; Exhaust Crossover Pipe, Left; Exhaust Pipe; Inlet Pipe; Converter
- Manufacturer Note: Converter - 3.0L eng. - exc. Calif. - Unleaded Fuel ONLY- (catchword OFT) - 2000
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Mountaineer Catalytic Converter Part Number: 1L2Z-5E212-AA
Product Specifications
- Other Name: Converter Assembly; Converter
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS
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Mercury Mountaineer Catalytic Converter Part Number: 1L5Z-5F250-DA
Product Specifications
- Other Name: Converter Assembly; Exhaust Pipe; Inlet Pipe; Front Pipe
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS
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Mercury Mountaineer Catalytic Converter Part Number: 4L2Z-5F250-A
Product Specifications
- Other Name: Converter Assembly; Exhaust Pipe; Inlet Pipe
- Manufacturer Note: NOZ
- Replaces: 4L2Z-5F250-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006 Mercury Mountaineer | Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer Catalytic Converter Part Number: 4L2Z-5F250-KA
Product Specifications
- Other Name: Converter Assembly; Exhaust Pipe; Converter & Pipe
- Manufacturer Note: TAR
- Replaces: 3L2Z-5F250-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2005 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS
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Mercury Mountaineer Catalytic Converter, Passenger Side Part Number: F67Z-5E212-RA
Product Specifications
- Other Name: Converter Assembly; Exhaust Crossover Pipe, Right; Exhaust Pipe; Inlet Pipe
- Manufacturer Note: Converter and pipe asy. - inlet - front converter - RH - (use with 5F250 rear converter) - "BEFORE 01/28/98"
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-1998 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Mountaineer Catalytic Converter, Driver Side Part Number: F67Z-5E213-BB
Product Specifications
- Other Name: Converter Assembly; Exhaust Crossover Pipe, Left; Exhaust Pipe; Inlet Pipe
- Manufacturer Note: Converter and pipe asy. - inlet - front converter - LH - (use with 5F250 rear converter) - "BEFORE 01/28/98"
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-1998 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Mountaineer Catalytic Converter, Rear Part Number: F67Z-5F250-EA
Product Specifications
- Other Name: Converter Assembly; Catalytic Converter, Rear; Converter
- Manufacturer Note: Converter asy. - rear - "BEFORE 01/28/98" - see 5E212/5E213 for FROM 01/28/98
- 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 Catalytic Converter, Passenger Side Part Number: F77Z-5E212-CE
Product Specifications
- Other Name: Converter Assembly; Catalytic Converter, Right; Exhaust Pipe; Converter & Pipe; Converter
- Manufacturer Note: Converter - RH - front - one converter - contains LH intermediate pipe between LH converter and muffler asy - (catchword ORE) - 1997/98
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
View related parts
Mercury Mountaineer Catalytic Converter, Driver Side Part Number: F77Z-5E212-EA
Product Specifications
- Other Name: Converter Assembly; Catalytic Converter, Left; Exhaust Pipe; Converter & Pipe; Converter
- Manufacturer Note: Converter - LH - front - one converter - (catchword NEJ) - 1997/98
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Mountaineer Catalytic Converter, Passenger Side Part Number: F87Z-5E212-LA
Product Specifications
- Other Name: Converter Assembly; Exhaust Crossover Pipe, Right; Exhaust Pipe; Inlet Pipe
- Manufacturer Note: Converter and pipe asy. - 2 converters - RH - (slip fit connection direct to muffler) - "FROM 01/28/98" - 1998
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
View related parts
Mercury Mountaineer Catalytic Converter, Passenger Side Part Number: XL2Z-5E212-AA
Product Specifications
- Other Name: Converter Assembly; Exhaust Crossover Pipe, Right; Exhaust Pipe; Inlet Pipe
- Manufacturer Note: Converter and pipe asy. - 2 converters - RH - (slip fit direct to muffler) - 1999/
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
View related parts
Mercury Mountaineer Catalytic Converter, Driver Side Part Number: XL2Z-5E212-AB
Product Specifications
- Other Name: Converter Assembly; Exhaust Crossover Pipe, Left; Exhaust Pipe; Inlet Pipe
- Manufacturer Note: Converter and pipe asy. - 2 converters - LH - (bolts direct to muffler) - 1999/
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
View related parts
Mercury Mountaineer Catalytic Converter, Driver Side Part Number: XL2Z-5E212-AC
Product Specifications
- Other Name: Converter Assembly; Exhaust Pipe; Converter & Pipe; Converter
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
View related parts
Mercury Mountaineer Catalytic Converter, Passenger Side Part Number: XL2Z-5E212-AD
Product Specifications
- Other Name: Converter Assembly; Exhaust Pipe; Converter & Pipe; Converter
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
View related parts
Mercury Mountaineer Catalytic Converter, Driver Side Part Number: XL2Z-5E212-BA
Product Specifications
- Other Name: Converter Assembly; Catalytic Converter, Left; Exhaust Pipe; Converter & Pipe
- Manufacturer Note: Converter - LH - front - one converter - (catchword ROG) - 1999/2000
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
View related parts
Mercury Mountaineer Catalytic Converter, Passenger Side Part Number: XL2Z-5E212-BB
Product Specifications
- Other Name: Converter Assembly; Catalytic Converter, Right; Exhaust Pipe; Converter & Pipe
- Manufacturer Note: Converter - RH - front - one converter - contains LH intermediate pipe between LH converter and muffler - (catchcode SAT) - 1999/2000
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
View related parts
Mercury Mountaineer Catalytic Converter Part Number: 2L2Z-5F250-AB
Product Specifications
- Other Name: Converter Assembly
- Manufacturer Note: NUB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002 Mercury Mountaineer | Base | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS
View related parts
Mercury Mountaineer Catalytic Converter Part Number: 2L2Z-5F250-EA
Product Specifications
- Other Name: Converter Assembly; Exhaust Pipe; Converter & Pipe
- Manufacturer Note: TEA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2005 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
View related parts
Mercury Mountaineer Converter & Pipe Part Number: 1L2Z-5F250-EA
Product Specifications
- Other Name: Converter Assembly; Catalytic Converter; Exhaust Pipe
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002 Mercury Mountaineer | Base | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS

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Mercury Mountaineer Catalytic Converter

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Mercury Mountaineer Catalytic Converter Parts and Q&A

Converter & Pipe
1L2Z-5F250-EA
Q: How to service and repair the catalytic converter on Mercury Mountaineer?
A: In order to fix the catalytic converter, lift the vehicle and remove the oxygen and catalyst monitor sensors. Take the bolts of the heat shield out, hold up the transmission, and dissolve the Muffler. Disassemble converter assembly, replace anti-seize sensors, reassemble parts and tighten all the bolts, then lower the automobile.
Catalytic Converter
4L2Z-5F250-FA
Q: How should one service the catalytic converter to ensure proper installation and avoid damage on Mercury Mountaineer?
A: Do not use oil/grease on isolators. Use new torque-prevailing fasteners and specified torques. Hoist and support exhaust, align tab/notch, remove clamps, muffler-to-cat hardware, crossmember and shields, then detach sensors. Clean flares, support converter, transfer sensors with anti-seize, replace stud nuts. Reassemble per torques, start engine, check/align for leaks.