SKU: 34159689505

MACE PERFORMANCE 12MM MANIFOLD INSULATOR FORD FAIRLANE NA NC NF NL AU SOHC INTECH VCT 3.9L 4.0L I6

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Description

MACE PERFORMANCE 12MM MANIFOLD INSULATOR FORD FAIRLANE NA NC NF NL AU SOHC INTECH VCT 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: 34159689505

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george t lyndall
Houston, US
★★★★★ 5
My new magnet hook
Color: Black3pro
Worked great
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Reviewed in the United States on May 17, 2026
E
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Elisha C.
Waukegan, US
★★★★★ 5
Great magnet!
Color: Black3pro, Color: Black3pro
Heavy duty and great magnet! Shop approved!
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Reviewed in the United States on March 21, 2026
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Frank Artusa
San Leandro, US
★★★★★ 1
Expensive and Weak
Color: Black3pro
they don't hold anything substantial unless you screw them in. Defeats the purpose of a magnet.
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Reviewed in the United States on April 10, 2026
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Calen Lowery
New York, US
★★★★★ 5
Handy
Color: Black3pro
great long hooks for organizing, especially in a work van / vehicle! A+ will be getting more of these
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Reviewed in the United States on May 20, 2026
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Amazon Customer
Grantham, US
★★★★★ 3
Magnetic hooks
Color: Black3pro
They are nice magnets but don’t hold much weight and slide down the metal wall. They are good for small lighter items. Really don’t see them as heavy duty.
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Reviewed in the United States on November 10, 2025

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