MACE 25MM PERFORMANCE MANIFOLD INSULATOR KIT TO SUIT HOLDEN MONARO V2 L67 SUPERCHARGED 3.8L V6
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
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.5 ★★★★★
Based on 1022 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
Verified Purchase
LCH
Los Angeles, US
★★★★★ 5
Great Adventure
Format: Hardcover
Excellent read fir all ages
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
T
Verified Purchase
Tamsen
Grantham, US
★★★★★ 5
Perfect Christmas gift
Format: Hardcover
Christmas Gift for my grandsons to teach them about what service dogs do for people who are physically, mentally or emotionally challenged
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 9, 2025
S
Verified Purchase
SEG
West Palm Beach, US
★★★★★ 4
Informative and fun book
Format: Hardcover
The story itself is very informative and playful in its approach to helping the reader understand the process of selecting and training service dogs. The star that was knocked off is not reflective of the product, but the shipping process or the packaging department which delivered another book with a ripped dust jacket. In reality the intended recipient will take that off anyway, so I am not returning it. It seems wasteful. However, if this gift was intended for anyone other than a family member, I would have. Amazon needs to train its packaging departments are better. But I suppose as long as we all keep buying, they will not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
C
Verified Purchase
Carole
Port Orchard, US
★★★★★ 5
Great children's book about dogs for love lovers!
Format: Hardcover
Great children's book about dogs 🐕 for the family who loves dogs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
L
Lisa Rush
Draper, US
★★★★★ 5
Inspiring story and gorgeous illustrations
Format: Hardcover
Such an inspiring story about life, love, courage and all of the people that work so hard to train and care for service dogs. The deep bond between a service dog and their owner is such a beautiful thing to see. I love seeing people living their best life with their service dogs out in public and when I read this book I felt it was the perfect way to spread awareness and hope especially to young kids. I highly recommend this book and I hope Canine Companions comes out with more in the future either following Andy’s life or maybe from a childs perspective who’s parents adopt a canine companions dog and how her/his life improves as a result.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2025

recommand products