What are the methods for removing rocker arms and lash adjusters in V6 engine on Ford Mustang?

There are two techniques of dismantling the rocker arms and lash adjusters of this engine however the manufacturer prefers the technique that allows removal of the rocker arms and lash adjusters together without having to remove the camshaft(s) and this they can be done by using the special valve spring compressor meant for the engine. This proceeds from the camshaft, and accompanied with a ratchet or a breaker bar, it depresses the valve spring so that tension on the rocker arm is removed. The other method of its measurement entails the withdrawal of the camshaft for measurements to be made on it. First, remove the valve cover(s) and place the valve spring compressor tool in position and compress the spring only to take the rocker arm loose. Before proceeding the camshaft rocker arms and hydraulic lash adjusters have to be refitted in the positions they were removed from, so do not forget to label all the parts before storing them. Subsequently, disconnect the hydraulic lash adjuster and make sure you set aside things that will need to be reassemble. If the vehicle has very high trip settings, the adjusters might be built to last longer and rather stubborn to come out; use of penetrating oil will be helpful. Visual check each adjuster for wear and possible damage, such as pitting or discoloration, and consider to replace it in case doubts concerning it or in case of existence of the noise in the valve train are presupposed. An ordinary hair-pin or a twig of a paperclip can be used to touch the plunger to feel whether it has a restricted movement of not more than 1.5mm. Recommended for adjustment when one of the carriers requires replacement, it is better to replace the entire set and then avoid using more cash for repair. Also be sure also to check the conditions of the rocker arms by applying pressure to them to see signs of wear or damage. Prior to the installation of the lash adjusters, purge them of air as follows: stand the lash adjusters vertically in the oil and with the help of a thin wire or paper clip work the plunger. Coat the tip of stem, the rocker arm, the lash adjuster bore with clean engine oil; place the lash adjusters and the rocker arms with the aid of compressed valve spring. This is a process of removal and hence the steps followed here are the reverse of the steps that were highlighted during installation process. Modified lash adjusters will make some noise when starting until the air is cleared off; to reduce the noise on start up, change the engine speed from idle position to 3,000 rpm for one minute after the engine is warm.

Genuine Ford Mustang Rocker Arm

Engine Rocker Arm

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18 Rocker Arms found

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Ford Mustang Arm Assembly - Valve Rocker
Part Number: E43Z-6564-A
$13.73 MSRP: $18.75
You Save: $5.02 (27%)
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Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Manufacturer Note: HSC
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1984-1989 Ford Mustang | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 5.0L | 3AT C3, 3AT C5, 4AT A4LD, 4AT AOD, 4MT, 5MT
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: E1FZ-6564-A
$16.25 MSRP: $22.20
You Save: $5.95 (27%)
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Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1981-1985 Ford Mustang | 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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Ford Mustang Arm Assembly - Valve Rocker
Part Number: F8AZ-6564-AA
$20.75 MSRP: $30.33
You Save: $9.58 (32%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Replaces: F2AZ-6564-A, F6AZ-6564-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-2004 Ford Mustang | 8 Cyl 4.6L, 8 Cyl 4.6L DOHC EFI, 8 Cyl 4.6L DOHC EFI S/C, 8 Cyl 4.6L SOHC EFI | 4-Speed Automatic Transmission 4R70W (AODE), 4AT 4R70W, 4AT 4R75W, 5-Speed Manual Transmission (T450D), 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 5MT, 6-Speed Manual Transmission Tremec T56, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: YL2Z-6564-AA
$13.57 MSRP: $19.83
You Save: $6.26 (32%)
ADD TO CART
Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Replaces: F77Z-6564-AB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Ford Mustang | 6 Cyl 4.0L SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 6-Speed Manual Transmission (T56), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: 4G7Z-6564-AA
$19.61 MSRP: $28.67
You Save: $9.06 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Manufacturer Note: For Non-Spraybar Oiling Style Cylinder Heads
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2014 Ford Mustang | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 5-Speed Automatic Transmission 5R55S, 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: F6AZ-6564-AA
$20.75 MSRP: $30.33
You Save: $9.58 (32%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: ARM ASY - VALVE ROCK
- Replaced by: F8AZ-6564-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997 Ford Mustang | 8 Cyl 4.6L | 4AT 4R70W, 5MT
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: 3L3Z-6564-BA
$22.23 MSRP: $31.67
You Save: $9.44 (30%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Arm Assy - Valve Rocker
- Manufacturer Note: ARM, ASY ROCKER
- Replaced by: 3L3Z-6564-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2010 Ford Mustang | 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.8L DOHC SC | 5-Speed Automatic Transmission 5R55S, 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 6-Speed Manual Transmission (T56), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: BR3Z-6564-A
$12.64 MSRP: $18.00
You Save: $5.36 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Manufacturer Note: Includes Retaining Clip
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2017 Ford Mustang | 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA | 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: EOAZ-6564-B
$10.90 MSRP: $15.53
You Save: $4.63 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Manufacturer Note: exc. "Cobra"
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1995 Ford Mustang | 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 A4LD, 4AT AOD, 4AT AOD-E, 4MT, 5MT
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: E9SZ-6564-A
$23.33 MSRP: $42.50
You Save: $19.17 (46%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Replaces: FOSZ-6564-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994-2004 Ford Mustang | 6 Cyl 3.8L, 6 Cyl 3.8L OHV EFI, 6 Cyl 3.9L OHV EFI NA | 4-Speed Automatic Transmission 4R70W (AODE), 4AT 4R70W, 4AT 4R75W, 4AT AOD-E, 5-Speed Manual Transmission (T450D), 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 5MT, 6-Speed Manual Transmission Tremec T56, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- 1983-1986 Ford Mustang | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 5.0L | 3AT C3, 3AT C5, 4AT AOD, 4MT, 5MT
View related parts
Ford Mustang Arm Assembly - Valve Rocker
Part Number: F2AZ-6564-A
$20.75 MSRP: $30.33
You Save: $9.58 (32%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: ARM ASY - VALVE ROCK
- Replaced by: F8AZ-6564-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996 Ford Mustang | 8 Cyl 4.6L | 4AT 4R70W, 5MT
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: GR3Z-6564-BA
$20.29 MSRP: $29.67
You Save: $9.38 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Replaces: GR3Z-6564-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2020 Ford Mustang | 8 Cyl 5.2 L GAS, 8 Cyl 5.2L | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Arm Assembly - Valve Rocker
Part Number: GR3Z-6564-A
$20.29 MSRP: $29.67
You Save: $9.38 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Arm Assy - Valve Rocker
- Replaced by: GR3Z-6564-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2019 Ford Mustang | 8 Cyl 5.2L | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang ARM ASY - VALVE ROCKER
Part Number: ML3Z-6564-A
$14.27 MSRP: $20.33
You Save: $6.06 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Rocker Arm
- Replaces: ML3Z-6564-G
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2023 Ford Mustang | 8 Cyl 5.0 L GAS
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Ford Mustang Valve Rocker Arm Assembly
Part Number: HL3Z-6564-D
$19.31 MSRP: $27.50
You Save: $8.19 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Arm Assembly - Valve Rocker; Rocker Arm
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2022 Ford Mustang | 8 Cyl 5.2 L GAS
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Ford Mustang Arm Assembly - Valve Rocker
Part Number: JR3Z-6564-A
Product Specifications
- Other Name: Arm Assy - Valve Rocker
- Replaces: HL3Z-6564-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2019 Ford Mustang | 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA | 10-Speed Automatic Transmission (10R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Arm Assembly - Valve Rocker
Part Number: D8FZ-6564-A
Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1990 Ford Mustang | 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 A4LD, 4AT AOD, 4MT, 5MT
View related parts
Ford Mustang Arm Assembly - Valve Rocker
Part Number: F1ZZ-6564-A
Product Specifications
- Other Name: Arm Assy - Valve Rocker; Rocker Arm
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1991-1993 Ford Mustang | 4 Cyl 2.3L | 4AT A4LD, 4AT AOD, 5MT

Ford Mustang Rocker Arm

Ford Mustang automobiles have the Rocker Arm as part of the valvetrain system whose primary function is to relay motion from the pushrod to the intake and the exhaust valves. Usually made of stamped steel or aluminum, the Rocker Arm changes the attitude of the pushrod and applies the required amount of force to the valves. In high RPM applications aluminum is more common for its lightweight nature whereas cast iron or forged carbon steel is more common in diesel engines. Various types of Rocker Arms, as the roller rockers incorporate needle bearings intending to decrease friction and general wear as opposed to a conventional Rocker Arm design. The rocker ratio is found in today's Ford Mustang engines with varying between 1.5:1 and 1.8:1, amplifies the camshaft lift to increase performance. The revised fulcrum bearings are also used to handle stresses and prolong durability in high RPM Mustangs, another evolution of the Rocker Arm in these legendary vehicles.

We provide a wide range of Ford Mustang Rocker Arm at the best prices possible. If you need Ford Mustang Rocker Arm, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your door step with a fast delivery service.

Ford Mustang Rocker Arm Parts Questions & Experts Answers

Arm Assembly - Valve Rocker
3L3Z-6564-BA
Q: What are the methods for removing rocker arms and lash adjusters in V6 engine on Ford Mustang?
A: There are two techniques of dismantling the rocker arms and lash adjusters of this engine however the manufacturer prefers the technique that allows removal of the rocker arms and lash adjusters together without having to remove the Camshaft(s) and this they can be done by using the special valve spring compressor meant for the engine. This proceeds from the camshaft, and accompanied with a ratchet or a breaker bar, it depresses the valve spring so that tension on the rocker arm is removed. The other method of its measurement entails the withdrawal of the camshaft for measurements to be made on it. First, remove the valve cover(s) and place the valve spring compressor tool in position and compress the spring only to take the rocker arm loose. Before proceeding the camshaft rocker arms and hydraulic lash adjusters have to be refitted in the positions they were removed from, so do not forget to label all the parts before storing them. Subsequently, disconnect the hydraulic lash adjuster and make sure you set aside things that will need to be reassemble. If the vehicle has very high trip settings, the adjusters might be built to last longer and rather stubborn to come out; use of penetrating oil will be helpful. Visual check each adjuster for wear and possible damage, such as pitting or discoloration, and consider to replace it in case doubts concerning it or in case of existence of the noise in the valve train are presupposed. An ordinary hair-pin or a twig of a paperclip can be used to touch the plunger to feel whether it has a restricted movement of not more than 1.5mm. Recommended for adjustment when one of the carriers requires replacement, it is better to replace the entire set and then avoid using more cash for repair. Also be sure also to check the conditions of the rocker arms by applying pressure to them to see signs of wear or damage. Prior to the installation of the lash adjusters, purge them of air as follows: stand the lash adjusters vertically in the oil and with the help of a thin wire or paper clip work the plunger. Coat the tip of stem, the rocker arm, the lash adjuster bore with clean engine oil; place the lash adjusters and the rocker arms with the aid of compressed valve spring. This is a process of removal and hence the steps followed here are the reverse of the steps that were highlighted during installation process. Modified lash adjusters will make some noise when starting until the air is cleared off; to reduce the noise on start up, change the engine speed from idle position to 3,000 rpm for one minute after the engine is warm.