HARLEY-DAVIDSON 16707-80A Rear Cylinder Head Dual Plug 78-84

( Brand: Harley-davidson ), ( Manufacturer Part Number: 16707-80A ), ( Type: Cylinder Head ), ( Oe/oem Part Number: Chopper, Bobber, Springer, Rigid, Vintage, Harley Davidson, Oe Oem Genuine Original, Cylinder Head Top End, Back, Shovelhead Shovel Head, Dual Spark Plug, Rear Back, 80 Inch 80 ), ( Vintage Part: Yes )

Review HARLEY DAVIDSON 78-84 Rear Cylinder Head Dual Plug Oem fits SHOVELHEAD FLH

Introducing the Harley-Davidson 16707-80A 78-84 Shovelhead Rear Cylinder Head Dual Plug for FLH models, a high-performance replacement part designed to deliver optimal power and efficiency for your classic Harley-Davidson motorcycle.

This cylinder head is specifically engineered for Harley-Davidson Shovelhead engines, which were produced from 1966 to 1984. By upgrading to this dual plug design, you will experience improved combustion and increased power output, making your bike more responsive and lively on the road.

The 16707-80A cylinder head features dual plug ports, allowing for two spark plugs to be used per cylinder. This advanced design ensures a more consistent and even combustion process, leading to better fuel efficiency and increased horsepower. Each spark plug sits in its own separate chamber, allowing for a more precise ignition and a more efficient transfer of combustion energy to the piston.

Manufactured from high-quality materials, this cylinder head is built to last. The durable cast iron construction ensures that it can withstand the rigors of regular riding, while the precision-machined ports and valves provide optimal air and fuel flow for maximum power output. The cylinder head also features new valve guides, which ensure a proper seal and reduce the risk of leaks.

Installation of this cylinder head is straightforward, making it a popular choice among Harley-Davidson enthusiasts. It is designed to fit directly onto your existing engine, with no modifications required. The cylinder head comes complete with all necessary hardware, including new gaskets and bolts, to ensure a secure and leak-free installation.

In summary, the Harley-Davidson 16707-80A 78-84 Shovelhead Rear Cylinder Head Dual Plug is an excellent upgrade for any FLH model Harley-Davidson motorcycle. It delivers improved power and efficiency, thanks to its dual plug design and precise engineering. With its durable construction and straightforward installation, this cylinder head is a must-have for any serious Harley-Davidson enthusiast looking to get the most out of their classic bike.

Buying a Harley-Davidson 16707-80A Shovelhead rear cylinder head with dual plugs (FLH) involves considering its potential advantages and disadvantages for your specific needs and circumstances. Here's a breakdown of each:

1. Improved Performance: The dual plugs in this cylinder head design can lead to improved combustion efficiency, better power output, and potentially smoother engine operation.

2. Vintage Appeal: For classic motorcycle enthusiasts, owning and maintaining original Harley-Davidson parts, such as this Shovelhead cylinder head, can be an attractive aspect.

3. Potential Cost Savings: In some cases, rebuilding or purchasing original parts like this one can be more cost-effective in the long run compared to buying a new motorcycle or even a new aftermarket part.

1. Complexity: Rebuilding or installing this Harley-Davidson Shovelhead cylinder head requires a significant investment of time and labor, especially if you don't have the necessary skills and tools.

2. Cost: The price of this particular part can be relatively high compared to aftermarket options or even used alternatives. This may not be feasible for everyone's budget.

3. Availability: Due to the vintage nature of this motorcycle part, it may be harder to find and purchase compared to more modern components.

The Harley-Davidson 16707-80A Shovelhead rear cylinder head with dual plugs (FLH) has its advantages and disadvantages. For those who value the vintage appeal, improved performance, and potential cost savings, this part may be worth the investment. However, if you lack the necessary skills, tools, and budget, it might be wiser to consider other options.

If you are a serious Harley-Davidson enthusiast with the necessary skills, tools, and budget, this Shovelhead rear cylinder head with dual plugs (FLH) can be a worthwhile investment. It offers potential performance improvements and the satisfaction of maintaining a classic motorcycle. However, if you're not confident in your abilities or have limited resources, it might be more practical to explore other, more accessible options.

Details:

Typical wear for age. Call a dealer if unsure. Fitment chart is NOT exact. Sold AS-IS, AS SHOWN.

Review all pictures before purchasing. Part Numbers: 16707-80A, 1670780A, 16707 80A, 17121-80, 1712180, 17121 80, 17161-81, 1716181, 17161 81, 17131-80, 1713180, 17131 17171-81, 1717181, 17171 81. 1 small chipped fin on intake side, front corner. Casting flaw or small repair on upper side of exhaust spring seat.

Verify it is correct for your application PRIOR TO PURCHASE. Looks to be a 1-83 Date Code but hard read first digit. Up for sale is a Dual Plug, Rear Cylinder Head Various 78-84 Harley Davidson Shovelhead model's. Feel free to message with any questions.

Used OEM Part. All threads look good and usable but motor mount stud has a little marring on it, otherwise relatively clean overall. Exhaust stud/ bolt threads have Helix-Coil/ Thread Repair insert and small split around it.

part #: 1670780a prices

• $149.99-$249.99

specifications cylindermotorcycleiz:

• for models: Flh, Shovelhead
• for makes: Harley
• brand: Harley-davidson
• mpn: 16707-80a
• type: Cylinder Head
• oe/oem part number: Chopper, Bobber, Springer, Rigid, Vintage, Harley Davidson, Oe Oem Genuine Original, Cylinder Head Top End, Back, Shovelhead Shovel Head, Dual Spark Plug, Rear Back, 80 Inch 80
• vintage part: Yes

general cylindermotorcycleiz:

• condition: For parts or not working
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

payments cylindermotorcycleiz:

• credit card: Diners-club
• other
• wallet: Paypal

shipping cylindermotorcycleiz:

• transit: 3-9 Days
• carrier: USPS
• class: Expedited
• type: Fixed
• cost: $0.00
• service: USPS Priority Mail

returns cylindermotorcycleiz:

• policy: No Returns

seller cylindermotorcycleiz:

• rating: 100.0%
• city: Storrs Mansfield, Connecticut
• # reviews: 3106

offer cylindermotorcycleiz:

• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: July 15, 2025

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