SKU: 2142103731

MACE PERFORMANCE MANIFOLD INSULATOR KIT TO SUIT HOLDEN STATESMAN VS WH ECOTEC L36 3.8L V6

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Description

MACE PERFORMANCE MANIFOLD INSULATOR KIT TO SUIT HOLDEN STATESMAN VS WH ECOTEC L36 3.8L V6Exclusive to Mace Engineering, here we have our design registered lower manifold insulator to suit the Holden VS and VT series, fitted with an Ecotec L36 3. 8L 6 cylinder engine. What are manifold insulators and what do they do? Manifold insulators are a thermal insulating spacer that mount between your engine block and intake manifold. Made from a heat blocking composite, our manifold insulators will increase power from your engine by keeping the

Exclusive to Mace Engineering, here we have our design-registered lower manifold insulator to suit the Holden VS and VT series, fitted with an Ecotec L36 3.8L 6 cylinder engine.

 

What are manifold insulators and what do they do?

Manifold insulators are a thermal insulating spacer that mount between your engine block and 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 than our composite material!

Also, with gaskets often made out of steel (thermal conductivity of 20 W/m-K) placed between the upper and lower manifolds being 0.5mm thick, replacing them with a manifold insulator will conduct up to an amazing 3,448 times less heat depending on the size chosen.

Our composite material also exhibits high stiffness and compressive strength, can withstand temperatures up to 150°C, 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.

 

Dyno Results:

The following test was conducted on a 1996 Holden Commodore VS with head and cam work. Normally the problem of low down torque is made worse when you stick a larger cam (with more overlap) in any engine as you effectively shift the power band. However by looking at the graph, we can see that power produced down low had increased by a staggering 10% using only our 12mm manifold insulator, with top-end increasing by a further 2kw at the rears! Please note that these results don't reflect the true nature of the on road gains given the lack of actual airflow, which further drop inlet temps.

Under normal driving conditions the plenum (upper manifold), with the insulator in place, becomes cool enough to comfortably touch. Unlike before, without the manifold insulator under the same driving conditions, making it very difficult to touch without getting burned!

 

POWER RUN, BEFORE AND AFTER MANIFOLD INSULATOR

 

Key Benefits:

  • Design registered.
  • Reduces charge air temperature resulting in better power consistency and detonation prevention.
  • Power increase with no undesirable side effects.
  • Improved low end torque by increasing runner length.
  • Improved fuel economy.
  • Easy to install.
  • Can be used as a replacement gasket.
  • Reusable.
  • Proven gains at an affordable price.

 

Contents:

  • 1 X Manifold insulator
  • 1 X Bolt pack
  • 1 X Silicone gasket maker
  • 1 X Mace sticker

Vehicle Fitment Guide

 

Parts Guide

 

Please select the part number you require from the variation by utilising our vehicle fitment guide and parts guide.

 

Notes:

  • The image is for illustrative purposes only.
  • Manifold insulator for WH Caprice/Statesman released from August 2000 onwards can be purchased through another listing
  • Please confirm your runner profile prior to purchase as there was a design change in later model engines.
  • To achieve optimum performance on a naturally aspirated engine, we recommend running a 25mm manifold insulator and a 12mm plenum spacer. However, for forced induction (side mount supercharger or turbo) we recommend running a 12mm manifold insulator and a 25mm plenum spacer.
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]
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SKU: 2142103731

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Tara
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Size: 36 Count (Pack of 1)
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Reviewed in the United States on May 4, 2026
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Kayla
San Leandro, US
★★★★★ 5
Works Overnight—A Must‑Have for Surprise Breakouts
Size: 36 Count (Pack of 1)
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Reviewed in the United States on April 29, 2026
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Jaclyn P.
Carnegie, US
★★★★★ 4
Love this product but not the best for stubborn pimples
Size: 36 Count (Pack of 1)
The Mighty Patch Original Patch from Hero Cosmetics is hands-down one of the best acne solutions I’ve used. These hydrocolloid stickers actually shrink pimples and whiteheads overnight — I wake up and see a noticeable difference, even on stubborn spots that usually take days to calm down. They’re super easy to use — just stick on before bed and let them work while you sleep. They stay put, even if you accidentally touch your face, and don’t irritate my skin. I also like that they’re practically invisible enough to wear during the day if needed. Great for emergency breakouts or everyday maintenance. For anyone who wants fast, gentle, mess-free results, these Mighty Patches deliver!
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Reviewed in the United States on March 1, 2026
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Just The Basics
Lowell, US
★★★★★ 5
Truly Mighty! Best patches we’ve found.
Size: 36 Count (Pack of 1)
These patches live up to the name! They are hands-down the best pimple patches I’ve used. The versatility and fit are perfect, and they actually stay put. I have very sensitive skin and have had zero issues with irritation, which is a huge win. My daughter uses them too and absolutely loves how effective they are. A must-have in our house!
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Reviewed in the United States on April 30, 2026
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ShopMom
Phoenix, US
★★★★★ 5
A total game changer (where were these when I was a teen?!)
Size: 72 Count (Pack of 1)
I honestly wish these had been around when I was younger! The Mighty Patch Original is hands-down the most effective way I’ve found to deal with stubborn whiteheads. Instead of picking at my skin and making things worse, I just pop one of these on at night and let it do the work while I sleep. By the morning, you can actually see the gunk it pulled out right on the patch (gross, but strangely satisfying). It significantly reduces the size and redness of the zit in just one use, and because it covers the spot, it stops me from touching it and causing more irritation. The 72-count pack is a great value and lasts quite a while. They stay put all night, even if you toss and turn, and they’re clear enough that you almost forget you’re wearing them. If you’re looking for a stress-free way to clear up your skin overnight, these are a must-have!
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