Should a home mechanic consider the condition of the Exhaust Valve and Intake Valve before taking the head for servicing on a Mercury Cougar?

Because of the complex nature of the job and the special tools and equipment needed, servicing of the valves, valve seats, and valve guides, commonly known as a valve job, is best left to a shop. The home mechanic can remove and disassemble the head, perform the initial cleaning and inspection, then reassemble and deliver the head to a dealer service department or an automotive machine shop for the actual valve servicing. The dealer service department or automotive machine shop will remove the valves and springs, recondition or replace the valves and valve seats, recondition the valve guides, check and replace the valve springs, spring retainers or rotators, and keepers as necessary, replace the valve seals with new ones, reassemble the valve components, and ensure the installed spring height is correct. The cylinder head gasket surface will also be resurfaced if it is warped. After the valve job has been performed by a shop, the head will be in like-new condition. When the head is returned, it is important to clean it again before installation on the engine to remove any metal particles and abrasive grit that may still be present from the valve service or head resurfacing operations, using compressed air if available to blow out all the oil holes and passages.

Genuine Mercury Cougar Exhaust Valve

Exhaust Muffler Valve

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13 Exhaust Valves found

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Mercury Cougar Exhaust Valve
Part Number: F1AZ-6505-A
$16.71 MSRP: $22.84
You Save: $6.13 (27%)
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Product Specifications
- Other Name: Valve - Exhaust; Exhaust Valve, Valves
- Replaces: F75Z-6505-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994-1997 Mercury Cougar | 8 Cyl 4.6L | 4AT, 4AT 4R70W, 4AT AODE
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Mercury Cougar Valve Exhaust
Part Number: E9SZ6505A
$18.13 MSRP: $24.77
You Save: $6.64 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Valve - Exhaust; Exhaust Valve, Valves
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1982-1995 Mercury Cougar | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C5, 4AT, 4AT AOD, 4AT AODE, 5MT
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Mercury Cougar Exhaust Valve
Part Number: F5RZ-6505-A
$49.67 MSRP: $67.86
You Save: $18.19 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Valve - Exhaust
- Replaced by: F8CZ-6505-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999 Mercury Cougar | 4 Cyl 2.0L | 4AT CD4E, 5MT
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Mercury Cougar Exhaust Valve
Part Number: F8CZ-6505-AA
$34.51 MSRP: $47.94
You Save: $13.43 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Valve - Exhaust
- Replaces: F5RZ-6505-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2002 Mercury Cougar | 4 Cyl 2.0L | 4AT CD4E, 5MT
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Mercury Cougar Exhaust Valve
Part Number: F5RZ-6505-D
$17.32 MSRP: $24.67
You Save: $7.35 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Valve - Exhaust; Exhaust Valve, Valves
- Manufacturer Note: STD.
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2002 Mercury Cougar | 6 Cyl 2.5L | 4AT CD4E, 5MT
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Mercury Cougar Exhaust Valve
Part Number: E5ZZ-6505-A
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1989 Mercury Cougar | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 3AT C5, 4AT AOD, 4MT, 5MT
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Mercury Cougar Exhaust Valve
Part Number: F6ZZ-6505-A
Product Specifications
- Other Name: Valve - Exhaust; Exhaust Valve, Valves
- Manufacturer Note: STD.
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-1997 Mercury Cougar | 6 Cyl 3.8L | 4AT 4R70W
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Mercury Cougar Exhaust Valve
Part Number: E43Z-6505-A
$48.37 MSRP: $69.50
You Save: $21.13 (31%)
Product Specifications
- Other Name: Valve - Exhaust; Exhaust Valve, Valves
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1989 Mercury Cougar | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 3AT C5, 4AT AOD, 4MT, 5MT
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Mercury Cougar Valve Exhaust
Part Number: F4TZ6505BB
Product Specifications
- Other Name: Valve - Exhaust
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1991-1993 Mercury Cougar | 8 Cyl 5.0L | 4AT AOD
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Mercury Cougar Exhaust Valve
Part Number: F4TZ-6505-AB
Product Specifications
- Other Name: Valve - Exhaust
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1991-1993 Mercury Cougar | 8 Cyl 5.0L | 4AT AOD
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Mercury Cougar Exhaust Valve
Part Number: E4FZ-6505-A
Product Specifications
- Other Name: Valve - Exhaust; Exhaust Valve
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1981-1985 Mercury Cougar | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 3AT C5, 4AT AOD, 4MT, 5MT
View related parts
Mercury Cougar Valve Exhaust
Part Number: E4AZ6505A
Product Specifications
- Other Name: Valve - Exhaust; Exhaust Valve, Valves
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1985 Mercury Cougar | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 3AT C5, 4AT AOD, 4MT, 5MT
View related parts
Mercury Cougar Exhaust Valve
Part Number: E43Z-6505-B
Product Specifications
- Other Name: Valve - Exhaust
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1989 Mercury Cougar | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 3AT C5, 4AT AOD, 4MT, 5MT

Mercury Cougar Exhaust Valve

The Exhaust Valve allows spent gases to escape the cylinder at the right instant to preserve power and control temperature. The part works with the camshaft and valvetrain, its head lifting away from the seat and gripping the lobe as it nudges the follower and snaps tight as the spring does its job to rebuild compression for the next cycle. The early Cougar V8s were equipped with an overhead valve configuration in which a cam that was buried in the block actuated the lifters, pushrods, and rocker arms to operate the Exhaust Valve. In later Cougar models, overhead cam installations were implemented, which placed the cam directly above the valve. Consequently, the pushrods were eliminated, resulting in a lower overall weight and further assisting the Exhaust Valve in functioning with higher revolutions. No matter how well engineered, heat is their enemy. If the Exhaust Valve overheats, it can warp or crack, robbing you of horsepower and creating a misfire. Stronger springs hold the valve closed at speed and prevent valve float while light rockers or buckets reduce friction so the Mercury can rev freely. Regardless of whether it is found in a classic muscle Mercury or a modern retro-styled Mercury, those who drive a Cougar rely on a healthy Exhaust Valve to deliver the snappy throttle response drivers expect.

We provide a wide range of Mercury Cougar Exhaust Valve at the optimal prices. If you need Mercury Cougar Exhaust Valve, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your doorstep with a fast delivery service.

Mercury Cougar Exhaust Valve Parts Questions & Experts Answers

Exhaust Valve
E43Z-6505-A
Q: Should a home mechanic consider the condition of the Exhaust Valve and Intake Valve before taking the head for servicing on a Mercury Cougar?
A:
Because of the complex nature of the job and the special tools and equipment needed, servicing of the valves, valve seats, and valve guides, commonly known as a valve job, is best left to a shop. The home mechanic can remove and disassemble the head, perform the initial cleaning and inspection, then reassemble and deliver the head to a dealer service department or an automotive machine shop for the actual valve servicing. The dealer service department or automotive machine shop will remove the valves and springs, recondition or replace the valves and valve seats, recondition the valve guides, check and replace the valve springs, spring retainers or rotators, and keepers as necessary, replace the valve seals with new ones, reassemble the valve components, and ensure the installed spring height is correct. The cylinder head gasket surface will also be resurfaced if it is warped. After the valve job has been performed by a shop, the head will be in like-new condition. When the head is returned, it is important to clean it again before installation on the engine to remove any metal particles and abrasive grit that may still be present from the valve service or head resurfacing operations, using compressed air if available to blow out all the oil holes and passages.