What precautions should be taken before servicing the exhaust heat shields for the catalytic converter and muffler on Mercury Grand Marquis?

All maintenance on exhaust heat shields for catalytic converters and mufflers must start by disconnecting the power to the air suspension system to stop the air springs from unintentionally changing height which might cause shifting during work operations. Turn off the air suspension switch before you perform the first step of securely lifting up the vehicle. Check the catalytic converter to find any detached or absent heat shields. Worm clamps F0TZ-5A231-A or W705949-S300 should be used to secure loose heat shields then remove extra clamp ear. Heat shields need installation if they are missing; otherwise, replacing the catalytic converter becomes necessary. Finally, lower the vehicle.

How to Service and Repair the Exhaust Heat Shield on Mercury Mountaineer?

Start by disconnecting the battery cable then raising the vehicle for service and repair operations of the heat shield. Check the catalytic converter together with the muffler for both loose heat shields and missing shield parts. Inside the heat shield repair process both FOTZ-5A231-A or W705949-S300 worm clamps need to be utilized for loose shield attachments followed by cutting away the excess worm clamp ear pieces. The absence of heat shields calls for new heat shield installation but if new heat shields cannot be obtained a new catalytic converter replacement becomes necessary. Bring down the car after completing the battery cable reconnection.

OEM Mercury Exhaust Heat Shield

Heat Shield

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

49 Exhaust Heat Shields found

View related parts
Mercury Heat Shield, Driver Side Part Number: 3W7Z-9Y427-AA
$14.92 MSRP: $21.17
You Save: $6.25 (30%)
ADD TO CART
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
View related parts
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
ADD TO CART
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
View related parts
Mercury Heat Shield, Passenger Side Part Number: YL8Z-5E258-AB
$125.95 MSRP: $183.33
You Save: $57.38 (32%)
ADD TO CART
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
View related parts
Mercury Heat Shield, Driver Side Part Number: AT4Z-9Y427-A
$17.27 MSRP: $24.50
You Save: $7.23 (30%)
Ships in 1-2 Business Days
ADD TO CART
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
View related parts
Mercury Heat Shield Part Number: YL2Z-5G221-AA
$42.99 MSRP: $61.50
You Save: $18.51 (31%)
ADD TO CART
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
View related parts
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
ADD TO CART
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
View related parts
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
View related parts
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
View related parts
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
View related parts
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
View related parts
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
View related parts
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)
View related parts
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
View related parts
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
View related parts
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
View related parts
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

| Page 1 of 3 |Next >

1-20 of 49 Results

Mercury Exhaust Heat Shield

If you own Mercury and want to keep it in top shape, choosing OEM Exhaust Heat Shield is a smart move. They are precisely engineered and follow strict factory standards. They are made in advanced facilities that use cutting edge technology. Each part goes through thorough testing to confirm strength and safety, so you can trust it. FordPartsDeal.com gives you genuine Mercury Exhaust Heat Shield at some of the affordable online prices without cutting quality. Every OEM Mercury part includes the manufacturer's warranty, easy returns, and super-fast delivery. So why wait? Shop now and get your vehicle back to peak condition.

Mercury Exhaust Heat Shield reduces temperatures under the hood in order to allow the exhaust gases to escape without heat saturation. In 1939, Mercury came in with cars that could ride soft and have a sharp line coupled with easy control, both on the long highways and on the narrow city streets. Customers were enamored with the fact that the Mercury cabin remained silent whilst the suspension dampened the bumps in unobtrusive manner, thus making the daily commute a less exhausting affair. Mercury was a company that over decades moved comfort ahead but at prices that regular drivers could afford, not following the luxury trends. Although this vehicle ceased production in 2011, Mercury continues to be a symbol of spacious interiors and assured daily driving that is recalled by older consumers and found online by younger enthusiasts. Cougars and Grand Marquis that were on showrooms proved that mid-size cars could have a sense of luxury without pomp, and practicality and style that could only be described as impeccable. Exhaust Heat Shields are panels of exhaust gas that cover the exhaust stream and prevent radiant heat from heating adjacent intake ducts when encountering traffic jams during everyday stop-and-go summer traffic congestion. Exhaust Heat Shield bounces the energy into the pipes, accelerating the velocity of gas and enhancing throttle responsiveness. Exhaust Heat Shield also reduces the cabin floor temperature, which prevents the slow bake damage of wiring and plastics. Exhaust Heat Shield is available as pipe, muffler, rear, and driver-side, and each replacement only takes a few minutes to install a new thermal armor.

Mercury Exhaust Heat Shield Parts and Q&A

Heat Shield, Driver Side
3W7Z-9Y427-AA
Q: What precautions should be taken before servicing the exhaust heat shields for the catalytic converter and muffler on Mercury Grand Marquis?
A:
All maintenance on exhaust heat shields for catalytic converters and mufflers must start by disconnecting the power to the air suspension system to stop the air springs from unintentionally changing height which might cause shifting during work operations. Turn off the air suspension switch before you perform the first step of securely lifting up the vehicle. Check the catalytic converter to find any detached or absent heat shields. Worm clamps F0TZ-5A231-A or W705949-S300 should be used to secure loose heat shields then remove extra clamp ear. Heat shields need installation if they are missing; otherwise, replacing the catalytic converter becomes necessary. Finally, lower the vehicle.
Heat Shield
YL2Z-5G221-AA
Q: How to Service and Repair the Exhaust Heat Shield on Mercury Mountaineer?
A:
Start by disconnecting the battery cable then raising the vehicle for service and repair operations of the heat shield. Check the catalytic converter together with the muffler for both loose heat shields and missing shield parts. Inside the heat shield repair process both FOTZ-5A231-A or W705949-S300 worm clamps need to be utilized for loose shield attachments followed by cutting away the excess worm clamp ear pieces. The absence of heat shields calls for new heat shield installation but if new heat shields cannot be obtained a new catalytic converter replacement becomes necessary. Bring down the car after completing the battery cable reconnection.