MERCURY 39551RYFH Engine Rocker Arm Shaft

( Manufacturer Part Number: 39551RYFH ), ( Part Type: Engine Arm Shaft ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Engine Rocker Arm And Shaft Assembly - ), ( Important Note: Adjustable; Fits Ford Fe Engines; 352, 360, 390, 410, 427, 428 ), ( Years: 1967 1968 1969 1970 ), ( Application: Mercury Cougar Engine Rocker Arm And Shaft Assembly ), ( Cs-sku: 400 )

Review MERCURY Replacement Engine Rocker Arm And Shaft Assembly fits COUGAR 1967–1970

Mercury Cougar 1967-1970 Engine Rocker Arm Shaft (Part Number: 39551RYFH, Year: 1968)

This Mercury Cougar engine rocker arm shaft is a must-have for any classic car enthusiast or mechanic working on a Mercury Cougar from the 1967 to 1970 model years. Manufactured to meet original equipment specifications, this high-quality replacement part ensures reliable engine performance and longevity.

The 39551RYFH rocker arm shaft is designed specifically for Mercury Cougar engines produced in 1968. This critical engine component helps to transmit the force from the engine's pistons to the valve train, allowing the engine to breathe and operate efficiently. Over time, the original rocker arm shaft can wear out or become damaged, leading to engine misfires, poor performance, or even complete engine failure.

Our replacement rocker arm shaft is engineered to provide a perfect fit and function, ensuring a seamless installation process. Each component is precision-machined from top-grade materials, ensuring superior strength and durability compared to generic aftermarket alternatives. Furthermore, this part is designed to meet or exceed OEM specifications, ensuring optimum engine performance and reliable operation.

Installation is straightforward, making this a popular choice among DIY mechanics and professional technicians alike. Simply remove the old, worn-out rocker arm shaft and replace it with the new one, following the manufacturer's instructions for proper installation. Our replacement rocker arm shaft comes complete with all necessary hardware, making it a true plug-and-play solution.

By choosing this Mercury Cougar engine rocker arm shaft, you can restore your classic car to its former glory, ensuring a smoother, more powerful engine that runs reliably for years to come. Don't let a worn-out rocker arm shaft hold you back upgrade today with our high-quality replacement part.

Pros and Cons of Buying a 1968 Mercury Cougar Engine Rocker Arm Shaft (39551RYFH)

The Mercury Cougar, produced by Ford between 1967 and 2002, is a classic American muscle car. If your 1968 Mercury Cougar requires a new engine rocker arm shaft (part number 39551RYFH), this article will help you decide whether to buy it or not. We'll discuss its potential benefits and drawbacks.

1. Improved Engine Performance: A worn-out or damaged rocker arm shaft can significantly affect your engine's performance. Replacing it with a new one can help restore lost power and improve overall engine efficiency.

2. Enhanced Durability: The new rocker arm shaft is designed to last longer than the original one. It's made of high-quality materials and engineered to withstand the rigors of regular use.

3. Reduced Engine Noise: A faulty rocker arm shaft can cause engine noise. By replacing it, you can help reduce unwanted noise and improve the driving experience.

4. Better Gas Mileage: A more efficient engine can lead to better gas mileage, which is a significant cost-saving benefit over time.

1. Cost: Replacing an engine part like the rocker arm shaft can be expensive, especially if you're paying for labor costs in addition to the part itself.

2. Time-Consuming: The installation process can be time-consuming, as it involves removing the old part and installing the new one. This can be inconvenient, especially if you're not mechanically inclined.

3. Potential for Additional Repairs: If your car requires a new rocker arm shaft, there's a possibility that other engine components may also need attention. This could lead to additional repair costs.

Replacing a worn-out or damaged engine rocker arm shaft (39551RYFH) in your 1968 Mercury Cougar can offer significant benefits, including improved engine performance, enhanced durability, reduced engine noise, and better gas mileage. However, the cost and time-consuming installation process are important considerations. Weighing these pros and cons, if you value the performance and longevity of your classic muscle car, it's worth the investment.

If you decide to buy the new rocker arm shaft (39551RYFH), we recommend purchasing it from a reputable parts supplier, such as a Ford or Mercury dealership or a trusted aftermarket parts supplier. This will ensure you receive a high-quality part that meets your expectations. Additionally, consider doing the installation yourself to save on labor costs. If you're not confident in your abilities, however, consider hiring a professional mechanic to ensure the job is done correctly.

Details:

Parts Geek - For 1967-1970 Mercury Cougar Engine Rocker Arm and Shaft Assembly 39551RYFH 1968: Review Fitment Notes to Ensure Proper Fit condition: New Brand: Replacement Notes: 2 PIECE Assemblies; Adjustable; Ford FE Engines Product Remark: Fits Engines; 352, 360, 390, 410, 427, 428 12 Month Warranty Vehicle: Engine: 1968-1970 Cougar7.0L V82 Quantity, 1967-1969 Cougar6.4L Quantity.

part #: 39551ryfh price

• $220.50

specifications rockeareng:

• for models: Cougar
• for makes: Mercury
• for years: 1967-1970
• mpn: 39551ryfh
• part type: Engine Arm Shaft
• manufacturer warranty: 12 Month Warranty
• notes: Engine Rocker Arm And Shaft Assembly -
• important note: Adjustable; Fits Ford Fe Engines; 352, 360, 390, 410, 427, 428
• years: 1967 1968 1969 1970
• application: Mercury Cougar Engine Rocker Arm And Shaft Assembly
• cs-sku: 400

general rockeareng:

• Engines Engine Parts > Valvetrain Components > Rocker Arms Parts
• condition: New

payments rockeareng:

• wallet: Apple-pay
• other
• credit card: Visa

shipping rockeareng:

• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• transit: 3-6 Days
• type: Fixed
• cost: $0.00
• class: Standard

seller rockeareng:

• rating: 98.7%
• city: Fort Smith, Arkansas
• # reviews: 327401

offer rockeareng:

• sold: 0
• quantity: 1
• started: April 10, 2026
• availability: In Stock
• options: Ship-to-home

returns rockeareng:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

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