How to service and repair the exhaust heat shields for the catalytic converter and muffler on Mercury Grand Marquis?

The initial step for exhaust heat shield and catalytic converter muffler repair begins by disabling the fire suppression system from the vehicle in case it exists. Put the vehicle on a hoist only during neutral gear operation. When conducting hoisting or jacking operations on air suspension vehicles the electrical power to the air suspension system must be shut off first to stop sudden air springs behavior that could lead to shifting. Complete this operation by switching off the air suspension control if such functionality exists. Thoroughly check the exhaust system to identify heat shields that are loose or damaged or totally missing. Worm clamps F0TZ-5A231-A or W705949-S300 should be used to secure loose heat shields by cutting away extra ear material from the clamps. The system requires new heat shields for all missing or damaged components of the exhaust system. Set the air suspension switch to ON position after completing repairs when the system has this functionality. The vehicle requires fire suppression system recharging as its last maintenance step.

OEM Mercury Exhaust Heat Shield

Heat Shield

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49 Exhaust Heat Shields found

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Mercury Heat Shield, Driver Side
Part Number: 3W7Z-9Y427-AA
$15.12 MSRP: $21.45
You Save: $6.33 (30%)
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Product Specifications
- Other Name: Shield - Exhaust Manifold Heat; Exhaust Manifold Heat Shield, Left; Exhaust Heat Shield; Heat Deflector
- Manufacturer Note: Shield exh. manifold, LH
- Position: Driver Side
Fits the following Mercury Models:
- Grand Marquis | 2003-2011 | 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
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Mercury Exhaust Heat Shield, Lower
Part Number: F77Z-5K261-AC
$509.62 MSRP: $748.33
You Save: $238.71 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Shield
- Position: Lower
Fits the following Mercury Models:
- Mountaineer | 2002-2005 | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Heat Shield, Passenger Side
Part Number: YL8Z-5E258-AB
$115.65 MSRP: $168.33
You Save: $52.68 (32%)
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Product Specifications
- Other Name: Shield; Exhaust Manifold Heat Shield, Right; Exhaust Heat Shield
- Position: Passenger Side
Fits the following Mercury Models:
- Mariner | 2008 | Base, Premier | 6 Cyl 3.0 L GAS
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Mercury Heat Shield, Driver Side
Part Number: AT4Z-9Y427-A
$17.06 MSRP: $24.20
You Save: $7.14 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Shield - Exhaust Manifold Heat; Catalytic Converter Heat Shield, Left; Exhaust Heat Shield
- Position: Driver Side
- Replaces: 7T4Z-9Y427-B
Fits the following Mercury Models:
- Sable | 2008-2009 | Base, Premier | 6 Cyl 3.5 L GAS
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Mercury Heat Shield
Part Number: YL2Z-5G221-AA
$42.99 MSRP: $61.50
You Save: $18.51 (31%)
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Product Specifications
- Other Name: Shield; Exhaust Heat Shield
- Replaces: F87Z-5G221-BA
Fits the following Mercury Models:
- Mountaineer | 1998-2001 | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Heat Shield, Center
Part Number: 6L2Z-5290-AA
$14.32 MSRP: $19.80
You Save: $5.48 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Shield; Floor Pan Heat Shield, Center; Exhaust Heat Shield; Muffler Shield
- Position: Center
Fits the following Mercury Models:
- Mountaineer | 2006-2010 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Exhaust Heat Shield, Front Passenger Side
Part Number: 8L2Z-5G220-A
Product Specifications
- Other Name: Shield Assembly; Floor Pan Heat Shield, Front Right; Exhaust Heat Shield, Front; Converter Shield; Upper Shield
- Position: Front Passenger Side
- Replaces: 6L2Z-5G220-AA
Fits the following Mercury Models:
- Mountaineer | 2006-2010 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Heat Shield
Part Number: 5F9Z-9A462-AA
Product Specifications
- Other Name: Shield - Exhaust Manifold; Exhaust Manifold Heat Shield; Exhaust Heat Shield; Shield - Exhaust Manifold Heat
Fits the following Mercury Models:
- Montego | 2005-2007 | Luxury, Premier | 6 Cyl 3.0 L GAS
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Mercury Heat Shield, Driver Side
Part Number: 7T4Z-5E258-A
Product Specifications
- Other Name: Shield; Catalytic Converter Heat Shield, Left; Exhaust Heat Shield, Left; Exhaust Heat Shield
- Position: Driver Side
Fits the following Mercury Models:
- Sable | 2008-2009 | Base, Premier | 6 Cyl 3.5 L GAS
View related parts
Mercury Heat Shield, Passenger Side
Part Number: 6L2Z-9A462-AA
Product Specifications
- Other Name: Shield - Exhaust Manifold Heat; Exhaust Manifold Heat Shield, Right; Exhaust Heat Shield
- Position: Passenger Side
Fits the following Mercury Models:
- Mountaineer | 2006-2010 | Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Heat Deflector, Driver Side
Part Number: F8RZ6311435AA
Product Specifications
- Other Name: Heat Shield
- Position: Driver Side
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base, S, V6 | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
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Mercury Heat Shield
Part Number: XS4Z-9A462-AA
Product Specifications
- Other Name: Shield - Exhaust Manifold; Exhaust Manifold Heat Shield; Exhaust Heat Shield; Shield - Exhaust Manifold Heat
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base | 4 Cyl 2.0 L GAS
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Mercury Lower Shield
Part Number: YL8Z-5E258-AA
Product Specifications
- Other Name: Shield; Catalytic Converter Heat Shield, Lower
- Position: Lower
Fits the following Mercury Models:
- Mariner | 2008 | Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV)
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Mercury Exhaust Heat Shield
Part Number: 1L2Z-5G221-AC
Product Specifications
- Other Name: Shield
- Manufacturer Note: shield asy. - muffler heat shield
Fits the following Mercury Models:
- Mountaineer | 2002-2005 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Heat Shield, Passenger Side
Part Number: 1L2Z-9Y427-AA
Product Specifications
- Other Name: Shield - Exhaust Manifold Heat; Exhaust Manifold Heat Shield, Right; Exhaust Heat Shield
- Position: Passenger Side
Fits the following Mercury Models:
- Mountaineer | 2002-2005 | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
View related parts
Mercury Heat Shield, Driver Side
Part Number: 2C5Z-9Y427-AA
Product Specifications
- Other Name: Shield - Exhaust Manifold Heat; Exhaust Manifold Heat Shield, Left; Exhaust Heat Shield
- Position: Driver Side
- Replaces: 1L2Z-9Y427-BA
Fits the following Mercury Models:
- Mountaineer | 2002-2005 | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
View related parts
Mercury Exhaust Heat Shield, Passenger Side
Part Number: 2L2Z-5G220-AA
Product Specifications
- Other Name: Shield Assembly
- Manufacturer Note: Converter Shield
- Position: Passenger Side
Fits the following Mercury Models:
- Mountaineer | 2002-2005 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Exhaust Heat Shield, Driver Side
Part Number: 2L2Z-5H207-AA
Product Specifications
- Other Name: Heat Shield
- Manufacturer Note: Converter Shield
- Position: Driver Side
Fits the following Mercury Models:
- Mountaineer | 2002-2003 | Base | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Converter Shield, Front Lower Driver Side
Part Number: 3L2Z-5E258-AA
Product Specifications
- Other Name: Shield; Catalytic Converter Heat Shield, Front Right Upper; Front Left Lower; Front Left Upper; Exhaust, Front
- Position: Front Lower Driver Side
Fits the following Mercury Models:
- Mountaineer | 2002-2010 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
View related parts
Mercury Converter Shield, Front Lower Passenger Side
Part Number: 3L2Z-5E258-BA
Product Specifications
- Other Name: Shield; Catalytic Converter Heat Shield, Front Right Lower
- Position: Front Lower Passenger Side
Fits the following Mercury Models:
- Mountaineer | 2002-2010 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS

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Mercury Exhaust Heat Shield Parts Questions & Experts Answers

Heat Shield, Driver Side
3W7Z-9Y427-AA
Q: How to service and repair the exhaust heat shields for the catalytic converter and muffler on Mercury Grand Marquis?
A: The initial step for exhaust heat shield and catalytic converter muffler repair begins by disabling the fire suppression system from the vehicle in case it exists. Put the vehicle on a hoist only during neutral gear operation. When conducting hoisting or jacking operations on air suspension vehicles the electrical power to the air suspension system must be shut off first to stop sudden air springs behavior that could lead to shifting. Complete this operation by switching off the air suspension control if such functionality exists. Thoroughly check the exhaust system to identify heat shields that are loose or damaged or totally missing. Worm clamps F0TZ-5A231-A or W705949-S300 should be used to secure loose heat shields by cutting away extra ear material from the clamps. The system requires new heat shields for all missing or damaged components of the exhaust system. Set the air suspension switch to ON position after completing repairs when the system has this functionality. The vehicle requires fire suppression system recharging as its last maintenance step.