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Description
Twin Power 66-84 Shovelhead Big Twin Head Gasket Std Bore .040 MLS Replaces H-D 16770-66 PrUpgrade your vintage Shovelhead Big Twin engine with the TwinPower 66 84 Head Gasket. Designed specifically for standard bore sizes with a 040 MLS thickness, this high quality gasket ensures superior sealing for optimal engine performance and reliability. Crafted as a precise replacement for the Harley Davidson 16770 66 part, it maintains the integrity of your engine's cylinder head, preventing leaks and enhancing durability under demanding
Upgrade your vintage Shovelhead Big Twin engine with the TwinPower 66-84 Head Gasket. Designed specifically for standard bore sizes with a 040 MLS thickness, this high-quality gasket ensures superior sealing for optimal engine performance and reliability.Crafted as a precise replacement for the Harley-Davidson 16770-66 part, it maintains the integrity of your engine's cylinder head, preventing leaks and enhancing durability under demanding conditions. Trust TwinPower to deliver components that meet the needs of enthusiasts and professionals alike.
Whether you're rebuilding, repairing, or tuning your classic motor, this head gasket is engineered to provide a perfect fit and consistent performance. Invest in quality and keep your Big Twin running smoothly with this essential engine component, exclusively available for enthusiasts seeking reliability and excellence.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 3
Doesn’t stay cool long
Set name: UltraCool Pillow, Standard - Soft/Medium Firmness, Item length width: 30.0 Inches
The pillow was a little softer than I expected. It’s cool at first but at least for me heats up fast.
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Reviewed in the United States on May 11, 2024
★★★★★ 2
too soft, useless. but cool, kindah
Set name: UltraCool Pillow, Standard - Medium/Firm Firmness, Item length width: 30.0 Inches
the problem with these "cooling" pillows is any cooling effect is almost completely negated by a pillow case. this particular pillow is cool to the touch, but completely useless as it flattens out completely, way too soft I think for anyone. I would not recommend this "NASA" pillow for anyone for anything. Maybe for 10 bucks, but certainly not what they ask for this. I did keep it though. It is "cool" but only for a moment and your flipping it around like any other pillow. also way too soft. BUt, it has been cool enough to get me back to sleep.
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Reviewed in the United States on May 29, 2025
★★★★★ 5
Fantastic pillows
Set name: UltraCool Pillow 2-Pack, King - Medium/Firm, Item length width: 40.0 Inches
I cannot say enough how happy I am with these pillows. Truly amazing. I put REST pillowcases on them and they are constantly cool/cold.
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Reviewed in the United States on August 11, 2025
★★★★★ 5
Love it
Set name: UltraCool Pillow, King - Soft/Medium Firmness, Item length width: 40.0 Inches
I really like this pillow!! It’s a nice medium fluff. I do think it feels cooler. And, when you flip to the “cool side of the pillow” it’s realllly chilly. It’s very long - it sticks out of my king size pillowcase a little bit - but not enough to be bothered by it.
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Reviewed in the United States on September 13, 2023
★★★★★ 5
Worth the investment
Size: Standard (Pack of 1), Size: Standard (Pack of 1)
I’ve owned several. I toss them about every 5 years because well I haven’t found a way to wash it and not ruin it. I used to buy it at bed bath & beyond before they closed. And it was the same price there. It’s not memory foam. It’s latex. So if you are allergic- buyer beware. But it has a nice little bouncy- ness to it. Which I love. Cradles my head & neck.
It has a zippered cover on it you can remove & wash. This one seems to have a thin, protective permanent cover thing on it. I assume so you potentially can wash the pillow. May attempt that in a few months.
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Reviewed in the United States on September 4, 2024
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