SKU: 75376488943

MACE PERFORMANCE 12MM MANIFOLD INSULATOR TO SUIT FORD TBI MPFI SOHC INTECH VCT 3.2L 3.9L 4.0L I6

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Description

MACE PERFORMANCE 12MM MANIFOLD INSULATOR TO SUIT FORD TBI MPFI SOHC INTECH VCT 3.2L 3.9L 4.0L I6Exclusive to Mace Engineering, our design registered manifold insulator to suit Ford 6 cylinder engines from EA to AU What are manifold insulators and what do they do? Manifold insulators are a thermal insulating spacer that mounts between your upper and lower intake manifold. Made from a heat blocking composite, our manifold insulators will increase power from your engine by keeping the intake cooler, and increase low end torque by increasing runner

Exclusive to Mace Engineering, our design-registered manifold insulator to suit Ford 6 cylinder engines from EA to AU

 

What are manifold insulators and what do they do?

Manifold insulators are a thermal insulating spacer that mounts between your upper and lower intake manifold. Made from a heat blocking composite, our manifold insulators will increase power from your engine by keeping the intake cooler, and increase low end torque by increasing runner length.

 

 

But how do manifold insulators keep the intake manifold cooler?

Given our manifold insulators are made from a composite material with a thermal conductivity of 0.29 W/m*K as opposed to aluminium, which has a thermal conductivity of 150 W/m*K; The difference works about to be that aluminium conducts heat 500 times higher then our composite material!

Also, with gaskets often made out of steel (20 W/m*K thermal conductivity), placed between the upper and lower manifolds, replacing a .5mm gasket with a 12mm manifold insulator will conduct an amazing 1087 times less heat (yes, that's over 100,000% reduction!). What this basically means is that it becomes very difficult for the engine to heat up the manifold, which ultimately means more power for extended periods (i.e. considerably fewer heat soak issues, which is especially noticeable on turbocharged cars)!

Our composite material also exhibits high stiffness and compressive strength, can withstand temperatures up to nearly 150C, and has a thermal expansion coefficient very similar to aluminium to increase sealing capabilities. In addition, the spacer can also withstand boosted conditions with ease.

 

Key Benefits:

  • Produces a cooler intake and intake manifold charge resulting in more power.
  • A cooler intake charge also reduces the tendency for detonation, meaning more ignition timing or boost for more power.
  • Improvelow endtorque by increasing runner length.
  • Better fuel economy.
  • Reusable over and over again.
  • No undesirable side effects.

 

Contents:

  • 01 X Performance manifold insulator
  • 01 X Bolt pack
  • 01 X Gasket maker

Vehicle Fitment Guide

 

Contents:

  • 01 X Performance manifold insulator
  • 01 X Bolt pack
  • 01 X Gasket maker

 

What about Installation?

Installation is verystraight forward, requiring only the removal of your inlet manifold to install the manifold insulator.

 

Note: Does not include intake manifold.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 75376488943

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Qina MO
Carnegie, US
★★★★★ 5
Good value
Size: King (Pack of 2), Style: Soft, Configuration: Pillow
I bought these pillows for my son, and he really likes them. They are soft and comfortable, perfect for sleeping and even hugging to fall asleep. They hold their shape well after washing. Overall, a good value for the price!
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Reviewed in the United States on April 3, 2026
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Kelly Venier
Belleville, US
★★★★★ 5
You won't regret buying these pillows, they're absolutely perfect.
Size: Standard (2 Pillows + 2 Protectors), Style: Medium, Configuration: Pillows + Protectors
I absolutely love these pillows, I love the fact that they come with a cover to protect them. They're just the right amount of density to them to make them extremely comfortable. They don't flatten down and just stay flat. I've had one set of them for quite a while now and they're still just as good as the brand new ones that I bought. Eventually I will be replacing every pillow in my house with these pillows. They're very well made, The filling is just right, the size is perfect, the quality is absolutely amazing. If you buy these pillows you won't regret it, they're literally the probably the best pillows I've ever bought. And also one of the cheaper ones that I bought in price not quality. And I've never bought any of the store that come with the protective covers with them either. I do highly recommend them.
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Reviewed in the United States on February 10, 2026
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Bridgett Whitaker
Phoenix, US
★★★★★ 5
Great pillow
Size: Standard (2 Pillows + 2 Protectors), Style: Medium, Configuration: Pillows + Protectors
This pillow is great. It supports my head and is just the right softness. Love the fact that it is machine washable. Would definitely purchase it again.
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Reviewed in the United States on May 21, 2026
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Amazon Customer
Natrona Heights, US
★★★★★ 5
Great pillow
Size: Standard (2 Pillows + 2 Protectors), Style: Medium, Configuration: Pillows + Protectors
Very well made pillow! It doesn't go flat right away like so many other pillows do. Very comfortable as well. I would purchase again.
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Reviewed in the United States on May 20, 2026
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Helen Cottrell
San Leandro, US
★★★★★ 4
Would buy again
Size: Standard (2 Pillows + 2 Protectors), Style: Medium, Configuration: Pillows + Protectors
I bought these pillows with the pillow protectors included. After 15 minutes of fluffing the pillows in the dryer they took their shape and were ready to use.
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Reviewed in the United States on April 22, 2026

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