SKU: 58631820212

MACE PERFORMANCE MANIFOLD INSULATOR KIT TO SUIT HOLDEN CREWMAN VY ECOTEC L36 3.8L V6

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Description

MACE PERFORMANCE MANIFOLD INSULATOR KIT TO SUIT HOLDEN CREWMAN VY ECOTEC L36 3.8L V6Exclusive to Mace Engineering, here we have our design registered lower manifold insulators to suit the Holden VX and VY 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 insulators to suit the Holden VX and VY 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 inlettemps.

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:

  • 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.
  • Please confirm your intake runner profile prior to purchase as there was a design change in later model engines.
  • Manifold insulator for WH Caprice/Statesman released before August 2000 can be purchased through another listing.
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: 58631820212

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Jen
Port Orchard, US
★★★★★ 5
Comfortable yoga mat
Color: Blue Mist, Style: 1/2 inch, Color: Blue Mist, Style: 1/2 inch
I was due for a new yoga mat as I practice every day anywhere from 10 minutes to 45 minutes. Over the years I've taken to liking the 1/2" thick mats with the grip lines. They're just easier on the joints (two acl reconstructions and a spinal fusion from T2 to L2) and a plate in my wrist. This mat is great. I like the design and color, the thickness is perfect, no smell AT ALL which is both rare and awesome. I used it today and found it comfortable. I also like the 72" length because I'm about 5'9 so I'm not hanging off the mat. I've been practicing yoga for over 15 years and have my CYT 200 even though I don't teach, and I would highly recommend this mat.
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Reviewed in the United States on April 27, 2026
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Sara
Cuba, US
★★★★★ 5
Thick/Fluffy
Color: Violet Haze, Style: 1/2 inch
I’ve really been enjoying this yoga mat. It’s fluffy and thick, which gives great support for my knees during certain poses and stretches. The length is also perfect, especially for someone on the taller side. I chose the light purple color, and it matches the pictures perfectly. As someone who practices yoga regularly and also uses it for stretching in my home gym, I think this mat is a great choice for both comfort and support.
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Reviewed in the United States on May 28, 2026
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Julia
Whiting, US
★★★★★ 5
Great for hand pain while working out.
Color: Wild Spruce, Style: 1/2 inch
Not squeaky, non slip. Much thicker and comfier than a normal yoga mat. Only thing is wearing sneakers on it, it might give you some more squeak. Just wipe down with a wet wipe after class. Keep it in my car. Purple color is perfect- muted yet a statement. Goes with all my clothes/towels.
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Reviewed in the United States on May 9, 2026
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Mariia Vetchynova
Grantham, US
★★★★★ 4
Lightweight yoga mat
Color: Rose, Style: 1/2 inch
The yoga mat is not one of those heavy-duty ones. It’s quite light, but it tends to crease easily and takes a long time to return to its original shape after being rolled or folded.
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Reviewed in the United States on April 26, 2026
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Chica Chica Chickpea
New York, US
★★★★★ 5
Great Mat!
Color: Boysenberry, Style: 1/2 inch
I’ve been using this mat 4+ days a week for 2.5 months and it is durable and comfortable. I use it for yoga, sculpt, and Pilates. It’s held up during burpees, pushups, and plenty other moves that I half expected would tear the mat, but it’s held up great. It also gets wiped down with a disinfectant after each use. Still like new. Great price too!
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Reviewed in the United States on May 9, 2026

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