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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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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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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jKim
Waukegan, US
★★★★★ 4
great chew!
Size: 1 Count (Pack of 1), Size: 1 Count (Pack of 1)
Our dog is a BIG fan of PetQwerks so when we saw this bacon dog chew, we had to try it out! Chews are amazing for hyperactive dogs, dogs with separation anxiety, etc. They keep dogs out of trouble and is great for dental hygiene! Our dog doesn't enjoy getting his teeth cleaned with a toothbrush so we give him lots of chew toys. When we opened up our amazon box, our dog was being so nosy and immediately took to the bone! Awesome chew and we love PetQwerks!
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Reviewed in the United States on September 4, 2018
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Shirlgirl
Port Orchard, US
★★★★★ 5
It’s a winner!
Size: 1 Count (Pack of 1)
My loves it!
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Reviewed in the United States on November 5, 2025
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Monica Shannon
Boise, US
★★★★★ 5
Good for my puppy...
My puppy loves them.durable . My little guys has some sharp teeth and he hasn't ripped them yet
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Reviewed in the United States on April 22, 2026
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Diane Hesse
Alexandria, US
★★★★★ 5
Best soothing chew toy for puppies yet!
Fantastic products!! Got these for my son’s 10 wk old chocolate lab puppy. He immediately started chewing on one and continued for close to an hour. I wish I had tried these with each of my own labs when they were pups (we’ve had 5 over the past 20 years). Inexpensive and an easy way to keep a determined chewer occupied without food/treats. I highly recommend for a heavy chewing breed like Labradors!!
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Reviewed in the United States on March 29, 2026
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Norma C.
Lexington, US
★★★★★ 1
Junk
The star didn't last 24 hours with my 5 month old Frenchie. She chewed a piece off the blue rubber star and I think she ingested it bc I can't find it. Hoping and praying she doesn't get sick from ingesting it. I won't be giving her anymore of these.
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Reviewed in the United States on May 8, 2026

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