SKU: 82847970192

MACE PERFORMANCE PLENUM SPACER KIT TO SUIT HOLDEN ECOTEC L36 3.8L V6

Sale price$70.16 Regular price$77.95
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Description

MACE PERFORMANCE PLENUM SPACER KIT TO SUIT HOLDEN ECOTEC L36 3.8L V6Exclusive to Mace Engineering is our design registered plenum spacer to suit Holden Ecotec 3. 8L V6 engines. What is a plenum spacer and what does it do? A plenum spacer thermally separates the plenum cover and intake manifold. Its main purpose is to improve air distribution between cylinders by slowing down the air speed inside the plenum chamber. As a result there is less of a pressure drop inside the plenum chamber between cylinders, and less air

Exclusive to Mace Engineering is our design-registered plenum spacer to suit Holden Ecotec 3.8L V6 engines.

 

What is a plenum spacer and what does it do?

A plenum spacer thermally separates the plenum cover and intake manifold. Its main purpose is to improve air distribution between cylinders by slowing down the air speed inside the plenum chamber. As a result there is less of a pressure drop inside the plenum chamber between cylinders, and less air momentum, resulting in better air distribution and power. The change in airflow characteristics is shown in the diagram below.

 

 

Not only will our spacer help you make more power, it will also help prevent any costly rebuilds through dangerous lean outs that occur due to poor air distributionwith standard manifolds in high horsepower/boost applications.

In addition to improving air distribution between cylinders, the increase in plenum volume also has a positive effect on bottom end torque.

The fact these spacers are manufactured from the same thermal resistant composite material as our manifold insulators means further horsepower gains are possible due to the reduction in heat soak.

 

Key Benefits:

  • Design registered.
  • Reduces charge air temperature resulting in better power consistency and detonation prevention.
  • Power increase with no undesirable side effects.
  • Improved air distribution between each cylinder.
  • Improved fuel economy.
  • Easy to install.
  • Can be used as a replacement gasket.
  • Reusable.
  • Proven gains at an affordable price.

 

Contents:

  • 1 X Plenum spacer
  • 1 X Bolt pack
  • 1 X Silicone gasket maker

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 25mm plenum spacer is recommended for turbo or supercharged applications only.
  • Installation is very straight forward, requiring only the removal of your plenum cover to install the 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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 82847970192

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Melissa W.
Whiting, US
★★★★★ 5
Tidy gadget
Color: Black
This gadget is a great way to keep the sink area tidy!
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Reviewed in the United States on June 3, 2026
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Josslin
Draper, US
★★★★★ 5
Great product
Color: Silver
I had something similar that was a flat metal piece with a "V" shape design. It was awful water collected in the groves at bottom i had to almost place the front end off the counter because then when the water started to slow from raining it would somehow go back underneath and get my counter top wet. This is so much better! Bottom spot can be rotated out when needed and also can be pushed in to hide. I put this on the counter normally without hanging off the edge (unlike the other one) and because its a spout funnels water perfectly into sink and my counter stays dry. A tiny bit of water sometimes collect at the end of spout but overall great product! Also has a divided that can be moved but can only be placed in specific spots, obv can be removed full. Tall basket can be moved to either side
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Reviewed in the United States on March 6, 2026
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Karla Rubio
Boise, US
★★★★★ 5
Compact but room for a lot
Color: Silver, Color: Silver
Wow I love it ! Super compact but room at the same time !
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Reviewed in the United States on April 22, 2026
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Amazon Customer
Fort Morgan, US
★★★★★ 5
Sturdy & Perfect Size
Color: Black
Love this sponge/soap holder. This is a perfect size to put scrubs, sponges, brushes and soap. Keeps your sink area clean and organized. It’s very sturdy and drains right into your sink. It also stays in place.
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Reviewed in the United States on May 8, 2026
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Lamia
Natrona Heights, US
★★★★★ 5
Love it
Color: Stainless Steel
The same as expected , beautiful design, perfect price and good quality.
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Reviewed in the United States on May 5, 2026

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