SKU: 12234393802

MACE 12MM UPPER MANIFOLD INSULATOR KIT TO SUIT HOLDEN CALAIS VL RB30E 3.0L I6

Sale price$135.00 Regular price$150.00
Save 10%

Pay in installments of $37.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 26 - Aug 31

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

MACE 12MM UPPER MANIFOLD INSULATOR KIT TO SUIT HOLDEN CALAIS VL RB30E 3.0L I6Exclusive to Mace Engineering, here we have our design registered upper manifold insulator to suit Holden Commodores and similar platforms fitted with the RB30E I6 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

Exclusive to Mace Engineering, here we have our design-registered upper manifold insulator to suit Holden Commodores and similar platforms fitted with the RB30E I6 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 12mm manifold insulator will conduct an amazing 1,655 times less heat.

Our composite material also exhibits high stiffness and compressive strength, can withstand temperatures up to nearly 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 12mm Upper manifold insulator
  • 1 X Bolt pack
  • 1 X Silicon gasket maker

Vehicle Fitment Guide

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: 12234393802

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.5 ★★★★★
Based on 13 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
savoeun l.
Dallas, US
★★★★★ 4
Ok substitution for the value
Size: Single Slat, Color: Chrome
Bought these for my 2004 M3, quality is good, fitment is OK, some gaps around the edges but you cant tell unless you look very closely. About as expected for the cost.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
D
Verified Purchase
DeathMetal_Jason
Omaha, US
★★★★★ 5
Good stuff
Size: Single Slat, Color: Glossy Black&M-Color
Look awesome in her! Not installed byte because I haven’t had the time and will need a little extra work but they are dope
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2021
D
Verified Purchase
Duck Danger
Bozeman, US
★★★★★ 3
Last about a year ishhh
Size: Single Slat, Color: Glossy Black&M-Color
Plastic mold isn’t as straight as it should be, the clips don’t line up like oem. Product is wiggly. Had on car for over half a year. Hasn’t faded. Just wish the fitment was better. Update: the grill lasted about 1 1/2 years, it began to fade, and I had a slat crack, no evidence of impact. I ended up buying a better made product and replaced this grill.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 17, 2018
R
Verified Purchase
Red
Lexington, US
★★★★★ 5
Fits a 2001 330!
Size: Single Slat, Color: Black, Size: Single Slat, Color: Black
The grill in my old 2001 330 broke off and I was really happy to find a nice looking replacement at an inexpensive cost. The black looks really sleek on it and has breathed some new life into it. Next up is to replace the emblem.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2024
F
Verified Purchase
Fabian
Houston, US
★★★★★ 5
Sedan
Size: Compatible with 2002-2006 BMW E46 3-Series Sedan, Color: Chrome, Size: Compatible with 2002-2006 BMW E46 3-Series Sedan, Color: Chrome
Perfect fit for a 2002 325i sedan, locks in place and does not fall out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026

recommand products