SKU: 57995481903

MACE 25MM PERFORMANCE MANIFOLD INSULATOR KIT TO SUIT HOLDEN MONARO V2 L67 SUPERCHARGED 3.8L V6

Sale price$139.50 Regular price$155.00
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

MACE 25MM PERFORMANCE MANIFOLD INSULATOR KIT TO SUIT HOLDEN MONARO V2 L67 SUPERCHARGED 3.8L V6Exclusive to Mace Engineering, here we have our design registered lower manifold insulatorto suit the Holden series from VS to VY fitted with L67 Supercharged 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

Exclusive to Mace Engineering, here we have our design-registered lower manifold insulatorto suit the Holden series from VS to VY fitted with L67 Supercharged 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 of20 W/m-K) placed between the upper and lower manifolds being 0.5mm thick, replacing them with a 25mm manifold insulator will conduct an amazing 3,448 times less heat.

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.

 

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 25mm Manifold insulator
  • 1 X Set of longer bolts
  • 1 X 25mm fuel injector extender kit
  • 1 X Gasket sealer

Vehicle Fitment Guide

 

Notes:

  • A 6.35mm manifold insulator can be purchased through another listing.
  • Slight modifications to the fuel rail will be needed to install this insulator.
  • The original bolts can be reused if this insulator is not used in conjunction with any intercooler.
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: 57995481903

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alyssa
Port Orchard, US
★★★★★ 5
Great value
Size: 10FT, Color: Purple
Great charger. Super fast & super long to reach wherever you need it to
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Reviewed in the United States on May 24, 2026
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Jenjems
Cuba, US
★★★★★ 5
Love this it works so well
Size: 10FT, Color: Purple
The link is good. The color is beautiful, they're very easy to use. The charging speed is amazing. They help keep my battery charged all day long, very versatile. It weighs absolutely nothing. And you wanna talk about durability?My dog chewed it and they're still working.
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Reviewed in the United States on May 10, 2026
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Maine
Belleville, US
★★★★★ 4
Decent
Size: 10FT, Color: White
Would of gave a 5 star rating but in terms of quality it’s decent as far as advertisement of it being 10ft is a lie I still had one of my original apple 10ft cable and these are technically 8-8.5ft. So far both boxes and cables still functional and working 5 months later better than most chargers you will buy at a gas station, that will only last about 2-3 months.
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Reviewed in the United States on March 20, 2026
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Amazon Customer
Massapequa, US
★★★★★ 5
Favorite charger
Size: 10FT, Color: Yellow
This is my 3rd purchase of this brand of charger (different colors). The yellow color is just as pictured. These chargers always fit flawlessly with my iphone15 pro. The charger provides a fast and lasting charge for my phone, iPad, or anything else I connect it to. I love the bright color options. I highly recommend this charger because they are durable and provide a quick, long lasting charge.
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Reviewed in the United States on April 21, 2026
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Jon Myers
Alexandria, US
★★★★★ 5
Perfect charger
Size: 10FT, Color: White
Very impressed with how quickly the charger works. The longer cable has made it easier to use the phone while charging and sitting on the couch. No issues with the cable getting tangled or fraying like I have had with others, or pinching and breaking the connection.
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Reviewed in the United States on May 10, 2026

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